{"product_id":"solubor-boron-fertilizer-20-lb","title":"Solubor Boron Fertilizer | 20.5% B 20 lb","description":"\u003ch2\u003eUltra-Fine Soluble Boron for Fertigation, Foliar \u0026amp; Hydroponic Use\u003c\/h2\u003e\u003cp\u003eSolubor by US Borax (Rio Tinto) is the industry-standard soluble boron fertilizer — delivering \u003cstrong\u003e20.5% boron (B)\u003c\/strong\u003e guaranteed (20.9% typical) as disodium octaborate tetrahydrate (Na₂B₈O₁₃·4H₂O). With a particle size under 75 microns, Solubor disperses and dissolves rapidly even at low temperatures. The 20 lb size is ideal for commercial greenhouse operations, large fertigation programs, and high-volume hydroponic facilities.\u003c\/p\u003e\u003cp\u003eBoron is essential for cell wall formation, pollen viability, sugar transport, and calcium utilization. Solubor’s amorphous particle structure and high inherent solubility make it the most reliable way to correct or prevent boron deficiency at any scale.\u003c\/p\u003e\u003ch3\u003eGuaranteed Analysis\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoron (B):\u003c\/strong\u003e 20.5% guaranteed (20.9% typical)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormula:\u003c\/strong\u003e Na₂B₈O₁₃·4H₂O — Disodium Octaborate Tetrahydrate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParticle size:\u003c\/strong\u003e \u0026lt;75 microns\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget range in nutrient solution:\u003c\/strong\u003e 0.1–0.5 ppm B\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplication Rates\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydroponic stock concentrate:\u003c\/strong\u003e Dissolve 0.25 g per liter of pure water; apply at 5 mL\/liter (19 mL\/gallon) to achieve 0.25 ppm B in working solution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFertigation \u0026amp; foliar:\u003c\/strong\u003e Apply per label recommendations; consult a certified crop advisor or agronomist for crop-specific rates\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e20.5% boron\u003c\/strong\u003e — highest-concentration soluble boron fertilizer; economical use rates\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-fine \u0026lt;75 micron particle size\u003c\/strong\u003e — rapid wetting and dispersion, even in cold water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimal crystallization effect\u003c\/strong\u003e — up to 2.7% Solubor can be added to common liquid fertilizer formulations while maintaining crystallization temperatures below 1.7°C (35°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH buffering action\u003c\/strong\u003e — slight buffering maintains solution pH stability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 lb pail\u003c\/strong\u003e — commercial scale; ideal for greenhouse operations and large fertigation programs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse in accordance with recommendations of a qualified individual or institution. \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0617\/5365\/5380\/files\/solubor-tech-data-sheet-7732329054292.pdf?v=1755664779\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eTech Data Sheet\u003c\/strong\u003e\u003c\/a\u003e | \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0617\/5365\/5380\/files\/solubor-sds-7732329054292.pdf?v=1755664911\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eSafety Data Sheet\u003c\/strong\u003e\u003c\/a\u003e | \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0617\/5365\/5380\/files\/Solubor-fertilizer-bag-label-7732329054292.pdf?v=1755664973\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Custom Hydro","offers":[{"title":"Default Title","offer_id":42225619533908,"sku":"SOLUBOR-20LB","price":70.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0617\/5365\/5380\/files\/image_bd6db628-f8b9-44a0-be64-de053716feca.png?v=1774902901","url":"https:\/\/customhydronutrients.com\/products\/solubor-boron-fertilizer-20-lb","provider":"Custom Hydro","version":"1.0","type":"link"}