{"title":"Gold Refining","description":"\u003cp data-path-to-node=\"1\"\u003eReclaim every grain of value with our curated selection of high-purity refining reagents. Designed for the precision needs of \u003cb data-path-to-node=\"1\" data-index-in-node=\"126\"\u003ejewelers, refiners, and bench goldsmiths\u003c\/b\u003e, this collection provides the essential chemistry required to transform scrap and sweeps into \u003cb data-path-to-node=\"1\" data-index-in-node=\"261\"\u003e.999 fine gold\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eFrom high-potency \u003cb data-path-to-node=\"2\" data-index-in-node=\"18\"\u003eSodium Metabisulfite\u003c\/b\u003e for clean precipitation to \u003cb data-path-to-node=\"2\" data-index-in-node=\"66\"\u003eUrea\u003c\/b\u003e for effortless denitration, our chemicals are laboratory-tested to ensure maximum recovery rates and minimal metal loss. Whether you are running a small bench-top recovery or a full-scale refinery, our industrial-grade solutions provide the consistency and reliability your craft demands.\u003c\/p\u003e","products":[{"product_id":"sodium-metabisulfite-nsf-certified","title":"Sodium Metabisulfite for Gold Precipitation","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\n    .smb-product-container {\n        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\n        line-height: 1.6;\n        color: #333;\n        max-width: 900px;\n        margin: auto;\n        border: 1px solid #e0e0e0;\n        padding: 20px;\n    }\n    .header-gold {\n        color: #b8860b;\n        border-bottom: 2px solid #d4af37;\n        padding-bottom: 10px;\n        text-transform: uppercase;\n        letter-spacing: 1px;\n    }\n    .section-title {\n        color: #444;\n        margin-top: 25px;\n        display: flex;\n        align-items: center;\n    }\n    .highlight-box {\n        background-color: #fff9e6;\n        border-left: 5px solid #d4af37;\n        padding: 15px;\n        margin: 20px 0;\n    }\n    .safety-alert {\n        background-color: #fff5f5;\n        border: 1px solid #feb2b2;\n        border-radius: 5px;\n        padding: 15px;\n        margin-top: 30px;\n    }\n    .spec-table {\n        width: 100%;\n        border-collapse: collapse;\n        margin: 20px 0;\n    }\n    .spec-table th, .spec-table td {\n        border: 1px solid #ddd;\n        padding: 12px;\n        text-align: left;\n    }\n    .spec-table th {\n        background-color: #f4f4f4;\n    }\n    .step-number {\n        background: #d4af37;\n        color: white;\n        border-radius: 50%;\n        width: 25px;\n        height: 25px;\n        display: inline-block;\n        text-align: center;\n        line-height: 25px;\n        margin-right: 10px;\n        font-weight: bold;\n    }\n\u003c\/style\u003e\n\u003cdiv class=\"smb-product-container\"\u003e\n\u003ch1 class=\"header-gold\"\u003ePremium Sodium Metabisulfite (SMB)\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg\u003eThe Professional Choice for High-Purity Gold Precipitation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnlock professional-grade results in your jewelry studio with our high-potency Sodium Metabisulfite. Specifically sourced for the selective precipitation of gold from Aqua Regia solutions, this technical-grade reducer is an essential staple for jewelers, refiners, and hobbyists looking to reclaim precious metals with laboratory-standard precision.\u003c\/p\u003e\n\u003ch3 class=\"section-title\"\u003eWhy Use Our SMB?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Selectivity:\u003c\/strong\u003e Drops gold effectively while keeping base metals and PGMs in solution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Recovery:\u003c\/strong\u003e Quickly reduces to heavy metallic gold particles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean Precipitation:\u003c\/strong\u003e Produces a distinct \"gold mud\" that is easy to filter and wash.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Sizes\u003c\/th\u003e\n\u003cth\u003eRecommended Application\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e2 lb\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHobbyists and small-batch bench scrap recovery.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5 lb\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRegular studio use and medium-scale projects.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e10 lb\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProfessional jewelry shops and commercial refining.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e50 lb\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-volume industrial use and maximum cost-efficiency.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2 class=\"header-gold\"\u003eRefining Guide: The \"Selective Drop\" Method\u003c\/h2\u003e\n\u003cdiv class=\"highlight-box\"\u003e\n\u003cstrong\u003eThe Chemical Reaction:\u003c\/strong\u003e\n\u003cp\u003eSodium Metabisulfite reacts with water and gold chloride to yield pure metallic gold\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"section-title\"\u003e\n\u003cspan class=\"step-number\"\u003e1\u003c\/span\u003eDenitration\u003c\/h3\u003e\n\u003cp\u003eEnsure your Aqua Regia solution is free of residual Nitric Acid. Use \u003cstrong\u003eUrea\u003c\/strong\u003e or evaporate the solution to a syrupy consistency. If \"free\" nitric remains, the precipitated gold will immediately re-dissolve.\u003c\/p\u003e\n\u003ch3 class=\"section-title\"\u003e\n\u003cspan class=\"step-number\"\u003e2\u003c\/span\u003ePreparation\u003c\/h3\u003e\n\u003cp\u003eMix a saturated solution by dissolving 1 oz of SMB into 4 oz of boiling distilled water. Stir until clear. \u003cem\u003eNote: This will release a pungent sulfur odor. Ensure proper safety and ventilation with use\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3 class=\"section-title\"\u003e\n\u003cspan class=\"step-number\"\u003e3\u003c\/span\u003eThe Precipitation\u003c\/h3\u003e\n\u003cp\u003eSlowly add the SMB solution to your filtered gold chloride. The liquid will shift from bright yellow\/green to a dark, opaque brown as the gold \"drops\" out of suspension.\u003c\/p\u003e\n\u003ch3 class=\"section-title\"\u003e\n\u003cspan class=\"step-number\"\u003e4\u003c\/span\u003eTesting and Recovery\u003c\/h3\u003e\n\u003cp\u003eAllow the gold to settle for at least 30 minutes. Use a \u003cstrong\u003eStannous Chloride\u003c\/strong\u003e test on the remaining liquid to confirm all gold has been recovered. If the test is negative, siphon the waste and wash your gold powder with boiling distilled water.\u003c\/p\u003e\n\u003cdiv class=\"safety-alert\"\u003e\n\u003ch3 style=\"color: #c53030; margin-top: 0;\"\u003e⚠️ Critical Safety Information\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSulfur Dioxide Gas :\u003c\/strong\u003e Contact with acid releases toxic gas. \u003cstrong\u003eALWAYS\u003c\/strong\u003e work in a professional fume hood or outdoors. Wear an acid-gas respirator, chemical-resistant gloves, and eye protection. Never mix in unventilated spaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 0.9em; color: #666; margin-top: 20px; font-style: italic;\"\u003eNote: Precious metal refining involves hazardous chemicals. Ensure you are familiar with local disposal regulations and safety protocols.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Bench Basics","offers":[{"title":"2LB","offer_id":47501688897710,"sku":"SMB-2LB","price":18.0,"currency_code":"USD","in_stock":true},{"title":"5LB","offer_id":47501688930478,"sku":"SMB-5LB","price":29.0,"currency_code":"USD","in_stock":true},{"title":"10LB","offer_id":47501688963246,"sku":"SMB-10LB","price":49.0,"currency_code":"USD","in_stock":true},{"title":"50LB","offer_id":47501688996014,"sku":"SMB-50LB","price":72.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/3001\/6576\/files\/Gemini_Generated_Image_klj0jxklj0jxklj0.png?v=1770963597"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/3001\/6576\/collections\/Gemini_Generated_Image_klj0jxklj0jxklj0.png?v=1780363697","url":"https:\/\/pepetools.com\/en-ca\/collections\/gold-refining.oembed","provider":"Pepetools","version":"1.0","type":"link"}