{"id":884,"date":"2026-09-11T09:26:32","date_gmt":"2026-09-11T01:26:32","guid":{"rendered":"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid-prills\/"},"modified":"2026-09-16T19:19:56","modified_gmt":"2026-09-16T11:19:56","slug":"insoluble-humic-acid-prills","status":"publish","type":"product_item","link":"https:\/\/www.jingfenggroup.com\/zh\/insoluble-humic-acid\/insoluble-humic-acid-prills\/","title":{"rendered":"Insoluble Humic Acid Prills \u2013 2\u20134 mm High-Hardness, 5% Max Moisture"},"content":{"rendered":"<style>\n\/* \u57fa\u7840\u91cd\u7f6e + \u5168\u5c40\u5e73\u6ed1\u6eda\u52a8\uff08\u951a\u70b9\u515c\u5e95\uff09 *\/\nhtml{scroll-behavior:smooth;scroll-padding-top:78px;}\n.jf-wrap{max-width:1140px;margin:0 auto;padding:0 16px;box-sizing:border-box;}\n.jf-wrap *{box-sizing:border-box;}\n\/* \u9690\u85cf\u4e3b\u9898\u81ea\u52a8\u63d2\u5165\u7684 Table of contents\uff08\u4e0e\u60ac\u6d6e\u951a\u70b9\u5bfc\u822a\u91cd\u590d\uff09 *\/\n.toc-box{display:none 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rgba(0,77,77,.10);transform:translateY(-2px)}.jf-rel-img{display:block;aspect-ratio:1\/1;background:#f5fafa;overflow:hidden}.jf-rel-img img{width:100%;height:100%;object-fit:cover;display:block}.jf-rel-thumb .t{display:block;padding:9px 11px;font-size:13px;font-weight:600;color:#004d4d;line-height:1.35}<\/style>\n<div class=\"jf-wrap\">\n<nav class=\"jf-nav\">\n<a href=\"#overview\">Overview<\/a><br \/>\n<a href=\"#benefits\">Benefits<\/a><br \/>\n<a href=\"#specs\">Specs<\/a><br \/>\n<a href=\"#docs\">Documents<\/a><br \/>\n<a href=\"#solubility\">Form<\/a><br \/>\n<a href=\"#applications\">Applications<\/a><br \/>\n<a href=\"#packaging\">Packaging<\/a><br \/>\n<a href=\"#cases\">Cases<\/a><br \/>\n<a href=\"#faq\">FAQ<\/a><br \/>\n<\/nav>\n<div class=\"jf-hero\">\n<div class=\"jf-hero-eyebrow\">INSOLUBLE HUMIC ACID &middot; HIGH-HARDNESS PRILLS<\/div>\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h1-prills, .wp-block-kadence-advancedheading.kt-adv-headingkb-h1-prills[data-kb-block=\"kb-adv-headingkb-h1-prills\"]{font-size:33px;font-style:normal;color:#ffffff;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h1-prills mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h1-prills[data-kb-block=\"kb-adv-headingkb-h1-prills\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h1-prills img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h1-prills[data-kb-block=\"kb-adv-headingkb-h1-prills\"] img.kb-inline-image{width:150px;vertical-align:baseline;}@media all and (max-width: 767px){.wp-block-kadence-advancedheading.kt-adv-headingkb-h1-prills, .wp-block-kadence-advancedheading.kt-adv-headingkb-h1-prills[data-kb-block=\"kb-adv-headingkb-h1-prills\"]{font-size:26px;}}<\/style>\n<h1 class=\"kt-adv-heading kb-h1-prills jf-hero-title\">Insoluble Humic Acid Prills<\/h1>\n<p class=\"jf-hero-tag\">The Low-Moisture, High-Hardness Humic Granule That Survives Your Line<\/p>\n<div class=\"jf-badges\">\n<span class=\"jf-badge\">Humic acid 40% min<\/span><br \/>\n<span class=\"jf-badge\">Moisture 5% max<\/span><br \/>\n<span class=\"jf-badge\">Size 2\u20134 mm<\/span><br \/>\n<span class=\"jf-badge\">Code JFHA-HA-GP<\/span>\n<\/div>\n<p class=\"jf-hero-lead\"><strong>2\u20134 mm spray-granulated prill &middot; 40% humic acid &middot; 5% max moisture &middot; 60% organic matter &middot; high crush strength<\/strong><\/p>\n<\/div>\n<div class=\"jf-sec\" id=\"overview\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview[data-kb-block=\"kb-adv-headingkb-h2-overview\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview[data-kb-block=\"kb-adv-headingkb-h2-overview\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview[data-kb-block=\"kb-adv-headingkb-h2-overview\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Product Overview<\/h2>\n<p><strong>Insoluble Humic Acid Prills<\/strong> is our highest-specification insoluble grade: spray-granulated to a dense, hard, <strong>low-moisture 2\u20134 mm prill<\/strong> built for processes that destroy ordinary granules.<\/p>\n<p>Compare it directly against the standard granule and the difference is one number: <strong>moisture 5% maximum against 30%<\/strong>. That single specification changes how the material behaves. Low moisture means the prill is hard rather than soft, it does not slake or break down under load, it will not pick up water from urea in a blend, and it stays free-flowing through a humid season in a warehouse.<\/p>\n<p>It was developed for three situations where the standard granule fails:<\/p>\n<ol class=\"jf-steps\">\n<li><strong>Blending with urea<\/strong> \u2014 urea is strongly hygroscopic and will draw moisture out of a high-moisture granule, turning the blend into a cake.<\/li>\n<li><strong>Aggressive mechanical handling<\/strong> \u2014 long conveyor runs, pneumatic transfer, repeated bagging.<\/li>\n<li><strong>Long export transit<\/strong> \u2014 a container crossing an ocean through the tropics is a genuinely hostile environment for a soft granule.<\/li>\n<\/ol>\n<p>If none of those apply, buy the standard granule and save the money. <strong>Insoluble Humic Acid Prills<\/strong> is a specification you pay for when the process demands it.<\/p>\n<\/div>\n<div class=\"jf-sec\" id=\"benefits\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits[data-kb-block=\"kb-adv-headingkb-h2-benefits\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits[data-kb-block=\"kb-adv-headingkb-h2-benefits\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits[data-kb-block=\"kb-adv-headingkb-h2-benefits\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Key Benefits<\/h2>\n<div class=\"jf-grid\">\n<div class=\"jf-card\">\n<h4>5% maximum moisture \u2014 the number that matters<\/h4>\n<p>Most humic granules carry up to 30% moisture. At 5% the prill is dense and hard, does not pick up water from companion materials, and stays free-flowing where a standard granule would cake.<\/p>\n<\/div>\n<div class=\"jf-card\">\n<h4>Survives blending with urea<\/h4>\n<p>Urea draws moisture aggressively from anything beside it. A high-moisture humic granule in a urea blend turns to cake; this prill does not, which is the main reason customers specify it.<\/p>\n<\/div>\n<div class=\"jf-card\">\n<h4>High crush strength, minimal fines<\/h4>\n<p>Spray granulation produces a far harder particle than disc granulation. The prill survives long conveyor runs, pneumatic transfer, drops and repeated handling without generating fines.<\/p>\n<\/div>\n<div class=\"jf-card\">\n<h4>Built for export transit<\/h4>\n<p>Temperature cycling and humidity inside a container on a long sea voyage destroy soft granules. This grade was developed specifically to arrive in the same condition it shipped in.<\/p>\n<\/div>\n<div class=\"jf-card\">\n<h4>Matches granular NPK for clean blending<\/h4>\n<p>The 2\u20134 mm round prill sits in the same size and density band as standard MAP, DAP and urea, so it stays distributed rather than segregating to the bottom of the bag.<\/p>\n<\/div>\n<div class=\"jf-card\">\n<h4>Guaranteed humic and organic content<\/h4>\n<p>40% minimum humic acid and 60% minimum organic matter, on a dry basis, with nitrogen at 2\u20135% \u2014 tested per batch and stated on the COA.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"jf-sec\" id=\"specs\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs[data-kb-block=\"kb-adv-headingkb-h2-specs\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs[data-kb-block=\"kb-adv-headingkb-h2-specs\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs[data-kb-block=\"kb-adv-headingkb-h2-specs\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Technical Specification<\/h2>\n<table class=\"jf-tb\">\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Specification<\/th>\n<th>Test standard<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Humic acid (dry basis)<\/td>\n<td>40.0% min<\/td>\n<td>GB\/T 11957-2001<\/td>\n<\/tr>\n<tr>\n<td>Organic matter (dry basis)<\/td>\n<td>60.0% min<\/td>\n<td>NY 525-2011<\/td>\n<\/tr>\n<tr>\n<td>Nitrogen (dry basis)<\/td>\n<td>2.0 \u2013 5.0%<\/td>\n<td>NY 525-2011<\/td>\n<\/tr>\n<tr>\n<td>Moisture<\/td>\n<td>5.0% max<\/td>\n<td>GB\/T 11957-2001<\/td>\n<\/tr>\n<tr>\n<td>pH (1:100)<\/td>\n<td>5.0 \u2013 7.0<\/td>\n<td>GB\/T 33804-2017<\/td>\n<\/tr>\n<tr>\n<td>Particle size<\/td>\n<td>2 \u2013 4 mm<\/td>\n<td>Sieve method<\/td>\n<\/tr>\n<tr>\n<td>Particle shape<\/td>\n<td>Round prill<\/td>\n<td>Visual<\/td>\n<\/tr>\n<tr>\n<td>Water solubility<\/td>\n<td>Nil (insoluble by design)<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>Appearance<\/td>\n<td>Black round prill<\/td>\n<td>Visual<\/td>\n<\/tr>\n<tr>\n<td>Product code<\/td>\n<td>JFHA-HA-GP<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"jf-sub\">Specification values are guaranteed minimums on a dry basis, taken from the batch Certificate of Analysis and tested against the stated Chinese industry standards. Every shipment travels with its own COA stating the tested values.<\/p>\n<div class=\"jf-doc-cta\" id=\"docs\">\n<p class=\"jf-doc-cta-txt\">Need the full Certificate of Analysis, MSDS, or TDS for your formulation or tender file?<\/p>\n<p><a class=\"jf-btn\" href=\"\/contact\/\">Request COA \/ MSDS \/ TDS<\/a>\n<\/div>\n<\/div>\n<div class=\"jf-sec\" id=\"solubility\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol[data-kb-block=\"kb-adv-headingkb-h2-sol\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol[data-kb-block=\"kb-adv-headingkb-h2-sol\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol[data-kb-block=\"kb-adv-headingkb-h2-sol\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Form &amp; Solubility<\/h2>\n<p><strong>Form:<\/strong> dense <strong>black round prills<\/strong>, 2\u20134 mm, hard and dry to the touch. Noticeably heavier and harder than the standard disc-granulated granule. Dust-free.<\/p>\n<p><strong>In water:<\/strong> insoluble. The prill is dense and will slake very slowly rather than breaking up quickly. <strong>Not for fertigation, drip lines or liquid tanks.<\/strong><\/p>\n<p><strong>Hardness:<\/strong> the defining property. The prill resists crushing between the fingers in a way the standard granule does not, which is the field test most buyers run when comparing the two grades side by side.<\/p>\n<p><strong>Moisture behaviour:<\/strong> at 5% maximum it does not give up or take on water readily. That is what allows it to sit alongside urea in a blend, and what allows it to cross an ocean in a container without arriving as a consolidated block.<\/p>\n<div class=\"jf-note\"><strong>Honest note:<\/strong> this grade costs more than the standard granule and the powder, and it is not automatically the better buy. It earns its premium in three specific situations \u2014 blending with urea, aggressive mechanical handling, and long export transit. If none of those apply to you, buy the standard granule. We would rather sell you the cheaper product that works than the expensive one that is overspecified.<\/div>\n<h3>Which insoluble grade fits your process?<\/h3>\n<table class=\"jf-tb jf-tb-cmp\">\n<thead>\n<tr>\n<th>Grade<\/th>\n<th>Form<\/th>\n<th>Humic acid<\/th>\n<th>Organic matter<\/th>\n<th>Size<\/th>\n<th>Best for<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><a href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-powder-60\/\" target=\"_blank\" rel=\"noopener\"><strong>Humic Acid Powder<\/strong><\/a><\/td>\n<td>80\u2013100 mesh powder<\/td>\n<td>40\u201370%<\/td>\n<td>70\u201382%<\/td>\n<td>80\u2013100 mesh<\/td>\n<td>Granulation feed, soil conditioner base, blending<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-crystal\/\" target=\"_blank\" rel=\"noopener\"><strong>Humic Acid Crystal<\/strong><\/a><\/td>\n<td>2\u20134 mm crystal<\/td>\n<td>60% min<\/td>\n<td>\u2014<\/td>\n<td>2\u20134 \/ 1\u20136 mm<\/td>\n<td>Direct soil application, premium organic blends<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-granule\/\" target=\"_blank\" rel=\"noopener\"><strong>Humic Acid Granule<\/strong><\/a><\/td>\n<td>2\u20134 mm round granule<\/td>\n<td>40% min<\/td>\n<td>60% min<\/td>\n<td>2\u20134 mm<\/td>\n<td>Bulk blending, broadcasting, organic fertilizer<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-prills\/\" target=\"_blank\" rel=\"noopener\"><strong>Humic Acid Prills<\/strong> <em>(this product)<\/em><\/a><\/td>\n<td>2\u20134 mm high-hardness<\/td>\n<td>40% min<\/td>\n<td>60% min<\/td>\n<td>2\u20134 mm<\/td>\n<td>Urea\/blending, mechanical spreading, export<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/microbial-humic-granular-fertilizer\/\" target=\"_blank\" rel=\"noopener\"><strong>Microbial Humic Granule<\/strong><\/a><\/td>\n<td>2\u20134 mm inoculated<\/td>\n<td>40% min<\/td>\n<td>60% min<\/td>\n<td>2\u20134 mm<\/td>\n<td>Bio-organic fertilizer, root-zone inoculation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"jf-sub\">All five grades come from the same leonardite seam and carry the same heavy-metal declaration (Pb, As, Hg, Cd, Cr all below detection, GB 18877). They differ in <em>particle form<\/em> and <em>where they fit in your process<\/em> &mdash; not in origin.<\/p>\n<\/div>\n<div class=\"jf-sec\" id=\"applications\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps[data-kb-block=\"kb-adv-headingkb-h2-apps\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps[data-kb-block=\"kb-adv-headingkb-h2-apps\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps[data-kb-block=\"kb-adv-headingkb-h2-apps\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Applications &amp; Dosage<\/h2>\n<p class=\"jf-lead\">Specified where the process is hard on the material \u2014 hygroscopic companions, mechanical handling, or long transit:<\/p>\n<table class=\"jf-tb\">\n<thead>\n<tr>\n<th>Application<\/th>\n<th>How to use<\/th>\n<th>Rate<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Urea and NPK blending<\/td>\n<td>The primary use. Blend with urea without the moisture transfer that cakes a standard humic granule.<\/td>\n<td>5\u201315% of blend<\/td>\n<\/tr>\n<tr>\n<td>Export and long transit<\/td>\n<td>Ship intercontinental without the material arriving degraded. Low moisture is what makes this possible.<\/td>\n<td>per programme<\/td>\n<\/tr>\n<tr>\n<td>Pneumatic and mechanical spreading<\/td>\n<td>Hard prills survive pneumatic transfer and high-speed spinner spreaders without generating fines.<\/td>\n<td>300\u2013750 kg\/ha<\/td>\n<\/tr>\n<tr>\n<td>Mechanised broadacre farming<\/td>\n<td>For large-scale operations where the material is handled repeatedly before it reaches the field.<\/td>\n<td>300\u2013750 kg\/ha<\/td>\n<\/tr>\n<tr>\n<td>Premium granular organic fertilizer<\/td>\n<td>Use where the finished product has to look and handle like a conventional granular fertiliser.<\/td>\n<td>20\u201340% of formulation<\/td>\n<\/tr>\n<tr>\n<td>Extended warehouse storage<\/td>\n<td>Store through a humid season without caking, where a standard granule would consolidate.<\/td>\n<td>per programme<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"jf-sec\" id=\"packaging\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack[data-kb-block=\"kb-adv-headingkb-h2-pack\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack[data-kb-block=\"kb-adv-headingkb-h2-pack\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack[data-kb-block=\"kb-adv-headingkb-h2-pack\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Packaging &amp; Storage<\/h2>\n<table class=\"jf-tb\">\n<thead>\n<tr>\n<th>Pack size<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>20 kg \/ 25 kg<\/td>\n<td>Woven PP bag with inner PE liner \u2014 standard export packing<\/td>\n<\/tr>\n<tr>\n<td>50 kg<\/td>\n<td>Woven PP bag with inner liner \u2014 for high-volume programmes<\/td>\n<\/tr>\n<tr>\n<td>1000\u20131100 kg<\/td>\n<td>Jumbo bag with discharge spout, 4 lifting loops<\/td>\n<\/tr>\n<tr>\n<td>Custom<\/td>\n<td>Private-label printed bag, OEM specification, retail sizes on request<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Storage:<\/strong> The most storage-stable grade in the insoluble range. At 5% maximum moisture the prill does not readily take up water, does not cake, and does not break down.<\/p>\n<p>Standard good practice still applies \u2014 under cover, on pallets, off bare concrete. Under those conditions the material stores for years without measurable change. This is the grade to specify if the material will sit in a warehouse through a wet season before use. Shelf life: 24 months in original, unopened packaging.<\/p>\n<p class=\"jf-sub\">Custom packaging, private-label printing and OEM specifications are available on request. Packaging photos are available in the product gallery.<\/p>\n<\/div>\n<div class=\"jf-sec\" id=\"cases\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases[data-kb-block=\"kb-adv-headingkb-h2-cases\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases[data-kb-block=\"kb-adv-headingkb-h2-cases\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases[data-kb-block=\"kb-adv-headingkb-h2-cases\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Successful Cases<\/h2>\n<div class=\"jf-cases\">\n<a class=\"jf-case\" href=\"\/application\/agriculture\/\"><span class=\"jf-case-tag\">Agriculture &middot; Urea Blending<\/span><\/p>\n<h4>Fertilizer blender, Middle East<\/h4>\n<p>Blends prills at 12% with granular urea for a date-palm programme. Had previously tried a standard humic granule and lost two containers to caking \u2014 urea pulled moisture out of the granule and the blend consolidated into blocks in the bag. Switched to the low-moisture prill and the problem disappeared; no complaints across four subsequent shipments.<\/p>\n<p><span class=\"jf-case-more\">Explore humic acid applications &#8594;<\/span><\/a><br \/>\n<a class=\"jf-case\" href=\"\/application\/agriculture\/\"><span class=\"jf-case-tag\">Agriculture &middot; Urea Blending<\/span><\/p>\n<h4>Distributor, West Africa<\/h4>\n<p>Imports in full containers with a six-week transit through tropical humidity. Standard granules arrived partially degraded with visible fines and several consolidated bags. The prill grade arrives free-flowing, which for them matters more than the price difference \u2014 a container they cannot sell is far more expensive than the specification premium.<\/p>\n<p><span class=\"jf-case-more\">Explore humic acid applications &#8594;<\/span><\/a>\n<\/div>\n<p class=\"jf-sub\">Full case studies with crop data are published in our application sectors.<\/p>\n<\/div>\n<div class=\"jf-sec\" id=\"faq\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq[data-kb-block=\"kb-adv-headingkb-h2-faq\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq[data-kb-block=\"kb-adv-headingkb-h2-faq\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq[data-kb-block=\"kb-adv-headingkb-h2-faq\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Frequently Asked Questions<\/h2>\n<div class=\"jf-faq\">\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\">\n<summary>How is this different from the standard Insoluble Humic Acid Granule?<\/summary>\n<p>Both are 2\u20134 mm round black granules at 40% humic acid, but they are made differently and behave differently. The standard granule is disc-granulated and carries up to 30% moisture; it is softer and adequate for normal blending and spreading. The prill is spray-granulated to 5% maximum moisture, making it much harder and far more resistant to moisture transfer. If urea, long transit or rough handling is involved, the prill is the correct specification.<\/p>\n<\/details>\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\">\n<summary>Why does moisture matter so much?<\/summary>\n<p>Moisture is the mechanism behind most humic granule failures. A 30%-moisture granule sitting next to hygroscopic urea will give up water to it, and the blend cakes. In a humid container the same granule softens and consolidates. Dropping to 5% removes most of that failure mode, which is why buyers who have been burned by a caked shipment come back for this grade.<\/p>\n<\/details>\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\">\n<summary>Can it be blended with urea and stored?<\/summary>\n<p>Yes \u2014 that is the main reason it exists. It can be blended with urea and stored far longer than a standard granule would allow. We would still not recommend indefinite storage of any urea blend, because urea itself is hygroscopic and will eventually draw moisture from the air regardless of what it is blended with. Blend to a realistic schedule.<\/p>\n<\/details>\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\">\n<summary>Is it more expensive?<\/summary>\n<p>Yes. Spray granulation to a low moisture specification is an additional process, and it is reflected in the price. We recommend it only where the process genuinely requires it. If you are blending with MAP and spreading within a season, the standard granule will do the same job for less money, and we will tell you that rather than upsell you.<\/p>\n<\/details>\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\">\n<summary>Does the higher hardness affect release in soil?<\/summary>\n<p>Marginally \u2014 a denser prill takes somewhat longer to break down than a softer granule. In practice the difference is weeks, not seasons, and both release across a growing season. If you need a rapid, measurable response within days rather than a season-long one, neither grade is right; use a soluble potassium humate or fulvate instead.<\/p>\n<\/details>\n<\/div>\n<\/div>\n<div class=\"jf-sec\" id=\"related\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel[data-kb-block=\"kb-adv-headingkb-h2-rel\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel[data-kb-block=\"kb-adv-headingkb-h2-rel\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel[data-kb-block=\"kb-adv-headingkb-h2-rel\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Also Available in This Family<\/h2>\n<div class=\"jf-rel-strip\"><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-powder-70\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Powder-150x150.webp\" alt=\"Insoluble Humic Acid Powder 70% \u2013 Low-Ash Grade for Oilfield &amp;#038; Industrial Humates\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Powder 70% \u2013 Low-Ash Grade for Oilfield &amp;#038; Industrial Humates<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-powder-50\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Powder-150x150.webp\" alt=\"Insoluble Humic Acid Powder 50% \u2013 Humate-Salt Feedstock &amp;#038; General Agriculture\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Powder 50% \u2013 Humate-Salt Feedstock &amp;#038; General Agriculture<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-powder-40\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Powder-150x150.webp\" alt=\"Insoluble Humic Acid Powder 40% \u2013 Bulk Soil Amendment &amp;#038; Organic Fertilizer Base\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Powder 40% \u2013 Bulk Soil Amendment &amp;#038; Organic Fertilizer Base<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/microbial-humic-granular-fertilizer\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Microbial-Humic-Granular-Fertilizer-1-150x150.webp\" alt=\"Microbial Humic Granular Fertilizer \u2013 Humic Granule + Bacillus Inoculant\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Microbial Humic Granular Fertilizer \u2013 Humic Granule + Bacillus Inoculant<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-granule\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Granule-150x150.webp\" alt=\"Insoluble Humic Acid Granule \u2013 2\u20134 mm Disc-Granulated, 40% Humic Acid\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Granule \u2013 2\u20134 mm Disc-Granulated, 40% Humic Acid<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-crystal\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Irregular-Granule-150x150.webp\" alt=\"Insoluble Humic Acid Crystal \u2013 60% Humic Acid, 2\u20134 mm Irregular Granule\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Crystal \u2013 60% Humic Acid, 2\u20134 mm Irregular Granule<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-powder-60\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Powder-150x150.webp\" alt=\"Insoluble Humic Acid Powder 60% \u2013 Standard Grade from Leonardite\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Powder 60% \u2013 Standard Grade from Leonardite<\/span><\/a><\/div>\n<\/div>\n<div class=\"jf-cta\">\n<h3>Need a quotation or a sample?<\/h3>\n<p>Tell us your application, target market and packaging &mdash; we will come back with specification, price and lead time.<\/p>\n<p><a href=\"https:\/\/www.jingfenggroup.com\/contact\">Request a Quote<\/a>\n<\/div>\n<\/div>\n<p><script>\n(function(){\n  function init(){\n    var nav=document.querySelector('.jf-nav');\n    if(!nav){return;}\n    var links=[].slice.call(nav.querySelectorAll('a'));\n    function targetOf(a){\n      var h=a.getAttribute('href');\n      if(h){ if(h.charAt(0)==='#'){ return document.querySelector(h); } }\n      return null;\n    }\n    var secs=links.map(targetOf);\n    var ticking=false;\n    function onScroll(){\n      var navH=nav.offsetHeight;\n      var y=window.pageYOffset+navH+30;\n      var cur=0;\n      for(var i=0;i<secs.length;i++){\n        if(secs[i]){\n          if(secs[i].getBoundingClientRect().top+window.pageYOffset<=y){ cur=i; }\n        }\n      }\n      for(var j=0;j<links.length;j++){ links[j].classList.toggle('jf-active',j===cur); }\n      if(links[cur]){\n        if(nav.scrollWidth>nav.clientWidth){\n          var l=links[cur];\n          nav.scrollTo({left:l.offsetLeft-nav.clientWidth\/2+l.offsetWidth\/2,behavior:'smooth'});\n        }\n      }\n    }\n    links.forEach(function(a){\n      a.addEventListener('click',function(e){\n        var t=targetOf(a);\n        if(!t){return;}\n        e.preventDefault();\n        var navH=nav.offsetHeight;\n        var rect=t.getBoundingClientRect();\n        var top=rect.top+window.pageYOffset-navH-14;\n        if(top<0){top=0;}\n        window.scrollTo({top:top,behavior:'smooth'});\n        links.forEach(function(x){x.classList.remove('jf-active');});\n        a.classList.add('jf-active');\n      });\n    });\n    window.addEventListener('scroll',function(){\n      if(!ticking){ window.requestAnimationFrame(function(){ onScroll(); ticking=false; }); ticking=true; }\n    },{passive:true});\n    window.addEventListener('resize',onScroll);\n    onScroll();\n  }\n  if(document.readyState==='loading'){ document.addEventListener('DOMContentLoaded',init); } else { init(); }\n})();\n<\/script><\/p>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Product\", \"name\": \"Insoluble Humic Acid Prills\", \"description\": \"2\u20134 mm spray-granulated humic acid prills: 40% humic acid, 5% max moisture, high crush strength. Built for urea blending and export. COA per batch.\", \"brand\": {\"@type\": \"Brand\", \"name\": \"JINGFENG\"}, \"material\": \"Leonardite\", \"category\": \"Insoluble humic acid \/ leonardite raw material\", \"additionalProperty\": [{\"@type\": \"PropertyValue\", \"name\": \"Fulvic acid (dry basis)\", \"value\": \"\"}, {\"@type\": \"PropertyValue\", \"name\": \"Humic acid (dry basis)\", \"value\": \"40.0% min\"}, {\"@type\": \"PropertyValue\", \"name\": \"Potassium as K2O (dry basis)\", \"value\": \"\"}, {\"@type\": \"PropertyValue\", \"name\": \"Water solubility\", \"value\": \"\"}, {\"@type\": \"PropertyValue\", \"name\": \"pH\", \"value\": \"5.0 \u2013 7.0\"}, {\"@type\": \"PropertyValue\", \"name\": \"Form \/ particle size\", \"value\": \"Black round prill\"}], \"url\": \"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-prills\/\", \"offers\": {\"@type\": \"AggregateOffer\", \"priceCurrency\": \"USD\", \"availability\": \"https:\/\/schema.org\/InStock\", \"url\": \"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-prills\/\"}, \"sku\": \"JFHA-HA-GP\"}<\/script><br \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How is this different from the standard Insoluble Humic Acid Granule?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Both are 2\u20134 mm round black granules at 40% humic acid, but they are made differently and behave differently. The standard granule is disc-granulated and carries up to 30% moisture; it is softer and adequate for normal blending and spreading. The prill is spray-granulated to 5% maximum moisture, making it much harder and far more resistant to moisture transfer. If urea, long transit or rough handling is involved, the prill is the correct specification.\"}}, {\"@type\": \"Question\", \"name\": \"Why does moisture matter so much?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Moisture is the mechanism behind most humic granule failures. A 30%-moisture granule sitting next to hygroscopic urea will give up water to it, and the blend cakes. In a humid container the same granule softens and consolidates. Dropping to 5% removes most of that failure mode, which is why buyers who have been burned by a caked shipment come back for this grade.\"}}, {\"@type\": \"Question\", \"name\": \"Can it be blended with urea and stored?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes \u2014 that is the main reason it exists. It can be blended with urea and stored far longer than a standard granule would allow. We would still not recommend indefinite storage of any urea blend, because urea itself is hygroscopic and will eventually draw moisture from the air regardless of what it is blended with. Blend to a realistic schedule.\"}}, {\"@type\": \"Question\", \"name\": \"Is it more expensive?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Spray granulation to a low moisture specification is an additional process, and it is reflected in the price. We recommend it only where the process genuinely requires it. 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