{"product_id":"gold-precipitant-sodium-metabisulfite-smb","title":"GTE Gold Precipitant (SMB) – Sodium Metabisulfite for Aqua Regia Gold Refining – 8 oz or 16 oz","description":"\u003ch2 id=\"tinymce_scroll_sign\"\u003eEffective Gold Precipitant for Aqua Regia Refining\u003c\/h2\u003e\n\u003cp data-start=\"512\" data-end=\"614\"\u003eRecover dissolved gold quickly and reliably with \u003cstrong data-start=\"561\" data-end=\"613\"\u003eGTE Professional Refining Grade Gold Precipitant\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"616\" data-end=\"809\"\u003eThis high-purity \u003cstrong data-start=\"633\" data-end=\"663\"\u003eSodium Metabisulfite (SMB)\u003c\/strong\u003e is used during the final stage of the aqua regia refining process to convert dissolved gold chloride back into \u003cstrong data-start=\"775\" data-end=\"808\"\u003esolid recoverable gold powder\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"811\" data-end=\"988\"\u003eGTE packages this refining chemical specifically for precious metal recovery, ensuring refiners receive \u003cstrong data-start=\"915\" data-end=\"955\"\u003econsistent precipitation performance\u003c\/strong\u003e and dependable refining results.\u003c\/p\u003e\n\u003cp data-start=\"990\" data-end=\"1177\"\u003eWhen added to properly prepared aqua regia solutions, SMB causes dissolved gold to precipitate out of solution as fine metallic gold powder which can then be filtered, washed, and melted.\u003c\/p\u003e\n\u003cp data-start=\"1179\" data-end=\"1370\"\u003eWhether you are refining scrap jewelry, recovering gold from electronics, or processing precious metals in a laboratory setting, GTE Gold Precipitant delivers reliable performance every time.\u003c\/p\u003e\n\u003chr data-start=\"1372\" data-end=\"1375\"\u003e\n\u003ch1 data-section-id=\"1kasq61\" data-start=\"1377\" data-end=\"1402\"\u003eWhy Refiners Choose GTE\u003c\/h1\u003e\n\u003cp data-start=\"1404\" data-end=\"1508\"\u003e\u003cstrong data-start=\"1404\" data-end=\"1435\"\u003eProfessional Refining Grade\u003c\/strong\u003e\u003cbr data-start=\"1435\" data-end=\"1438\"\u003eHigh-purity sodium metabisulfite designed for precious metal recovery.\u003c\/p\u003e\n\u003cp data-start=\"1510\" data-end=\"1606\"\u003e\u003cstrong data-start=\"1510\" data-end=\"1543\"\u003eConsistent Gold Precipitation\u003c\/strong\u003e\u003cbr data-start=\"1543\" data-end=\"1546\"\u003eReliable conversion of dissolved gold back into solid metal.\u003c\/p\u003e\n\u003cp data-start=\"1608\" data-end=\"1700\"\u003e\u003cstrong data-start=\"1608\" data-end=\"1638\"\u003eDesigned for Gold Refining\u003c\/strong\u003e\u003cbr data-start=\"1638\" data-end=\"1641\"\u003ePackaged specifically for aqua regia refining applications.\u003c\/p\u003e\n\u003cp data-start=\"1702\" data-end=\"1802\"\u003e\u003cstrong data-start=\"1702\" data-end=\"1745\"\u003eResealable Moisture-Resistant Packaging\u003c\/strong\u003e\u003cbr data-start=\"1745\" data-end=\"1748\"\u003eProtects the chemical and keeps it dry during storage.\u003c\/p\u003e\n\u003cp data-start=\"1804\" data-end=\"1915\"\u003e\u003cstrong data-start=\"1804\" data-end=\"1838\"\u003eTrusted by Refiners Nationwide\u003c\/strong\u003e\u003cbr data-start=\"1838\" data-end=\"1841\"\u003eUsed by hobby refiners, jewelers, and precious metal recovery specialists.\u003c\/p\u003e\n\u003chr data-start=\"1917\" data-end=\"1920\"\u003e\n\u003ch1 data-section-id=\"eph7wp\" data-start=\"1922\" data-end=\"1939\"\u003eAvailable Sizes\u003c\/h1\u003e\n\u003cp data-start=\"1941\" data-end=\"2007\"\u003e\u003cstrong data-start=\"1941\" data-end=\"1949\"\u003e8 oz\u003c\/strong\u003e\u003cbr data-start=\"1949\" data-end=\"1952\"\u003eIdeal for small refining batches and beginner refiners.\u003c\/p\u003e\n\u003cp data-start=\"2009\" data-end=\"2088\"\u003e\u003cstrong data-start=\"2009\" data-end=\"2025\"\u003e16 oz (1 lb)\u003c\/strong\u003e\u003cbr data-start=\"2025\" data-end=\"2028\"\u003eBest for larger refining batches and frequent refining work.\u003c\/p\u003e\n\u003chr data-start=\"2090\" data-end=\"2093\"\u003e\n\u003ch1 data-section-id=\"a9ry3f\" data-start=\"2095\" data-end=\"2108\"\u003eCommon Uses\u003c\/h1\u003e\n\u003cp data-start=\"2110\" data-end=\"2307\"\u003e• Precipitating dissolved gold from aqua regia solutions\u003cbr data-start=\"2166\" data-end=\"2169\"\u003e• Precious metal recovery and refining\u003cbr data-start=\"2207\" data-end=\"2210\"\u003e• Scrap gold refining\u003cbr data-start=\"2231\" data-end=\"2234\"\u003e• Jewelry recycling and refining\u003cbr data-start=\"2266\" data-end=\"2269\"\u003e• Laboratory precious metal processing\u003c\/p\u003e\n\u003chr data-start=\"2309\" data-end=\"2312\"\u003e\n\u003ch1 data-section-id=\"s3sgkf\" data-start=\"2314\" data-end=\"2327\"\u003eTypical Use\u003c\/h1\u003e\n\u003cp data-start=\"2329\" data-end=\"2464\"\u003eDissolve a small amount of sodium metabisulfite in water and slowly add it to a filtered aqua regia solution containing dissolved gold.\u003c\/p\u003e\n\u003cp data-start=\"2466\" data-end=\"2606\"\u003eAs the SMB reacts, the dissolved gold converts into \u003cstrong data-start=\"2518\" data-end=\"2539\"\u003esolid gold powder\u003c\/strong\u003e, which settles out of solution and can be recovered by filtration.\u003c\/p\u003e\n\u003chr data-start=\"2608\" data-end=\"2611\"\u003e\n\u003ch1 data-section-id=\"nh62sj\" data-start=\"2613\" data-end=\"2637\"\u003eProduct Specifications\u003c\/h1\u003e\n\u003cp data-start=\"2639\" data-end=\"2675\"\u003e\u003cstrong\u003eChemical Name\u003c\/strong\u003e\u003cbr data-start=\"2652\" data-end=\"2655\"\u003eSodium Metabisulfite\u003c\/p\u003e\n\u003cp data-start=\"2677\" data-end=\"2703\"\u003e\u003cstrong\u003eChemical Formula\u003c\/strong\u003e\u003cbr data-start=\"2693\" data-end=\"2696\"\u003eNa₂S₂O₅\u003c\/p\u003e\n\u003cp data-start=\"2705\" data-end=\"2717\"\u003e\u003cstrong\u003ePurity\u003c\/strong\u003e\u003cbr data-start=\"2711\" data-end=\"2714\"\u003e99%\u003c\/p\u003e\n\u003cp data-start=\"2719\" data-end=\"2756\"\u003e\u003cstrong\u003eSizes Available\u003c\/strong\u003e\u003cbr data-start=\"2734\" data-end=\"2737\"\u003e8 oz\u003cbr data-start=\"2741\" data-end=\"2744\"\u003e16 oz (1 lb)\u003c\/p\u003e\n\u003cp data-start=\"2758\" data-end=\"2801\"\u003e\u003cstrong\u003ePackaging\u003c\/strong\u003e\u003cbr data-start=\"2767\" data-end=\"2770\"\u003eResealable mylar refining-grade pouch\u003c\/p\u003e\n\u003chr data-start=\"2803\" data-end=\"2806\"\u003e\n\u003ch1 data-section-id=\"15sf35s\" data-start=\"2808\" data-end=\"2823\"\u003eSafety Notice\u003c\/h1\u003e\n\u003cp data-start=\"2825\" data-end=\"2950\"\u003eAlways wear proper protective equipment and work in a well-ventilated area when performing precious metal refining processes.\u003c\/p\u003e\n\u003ch3\u003eOverview of GTE Gold Precipitant\u003c\/h3\u003e\n\u003cp\u003eGTE Gold Precipitant, composed primarily of sodium metabisulfite, is an ideal chemical agent for the gold refining process, especially following aqua regia dissolution. This product is designed to efficiently precipitate usable gold from solution by selectively reducing gold ions, enabling straightforward recovery. Available in convenient 8 oz and 16 oz bottles, it caters to both small-scale and professional refiners. Its reliable performance helps maximize gold yield with minimal impurities, supporting consistent refining results.\u003c\/p\u003e\n\u003ch3\u003eHow Sodium Metabisulfite Functions in Gold Refining\u003c\/h3\u003e\n\u003cp\u003eSodium metabisulfite acts as a reducing agent that facilitates the precipitation of gold from aqua regia solution. When added, it effectively converts dissolved gold complexes into solid gold particles, which can be filtered and collected. This reaction is critical to isolate gold after the corrosive aqua regia mixture dissolves impurities and other metals. Its high purity and predictable behavior make GTE Gold Precipitant a trusted choice for hobbyists and professionals alike, ensuring efficient recovery and handling.\u003c\/p\u003e\n\u003ch3\u003eChoosing the Right Size and Handling Tips\u003c\/h3\u003e\n\u003cp\u003eThe GTE Gold Precipitant is offered in 8 oz and 16 oz sizes, providing flexibility depending on the scale of your refining project. The smaller volume suits experimental or hobbyist work, while the larger size supports regular or industrial use. Proper handling includes storing the powder in a cool, dry place and wearing protective gear during use to avoid inhalation or skin contact. Following recommended dosing and safety guidelines enhances the overall refining experience and chemical effectiveness.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"GTE","offers":[{"title":"8 ounces","offer_id":47227361591445,"sku":null,"price":13.97,"currency_code":"USD","in_stock":true},{"title":"16 ounces","offer_id":47227361624213,"sku":null,"price":18.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0464\/5414\/5173\/files\/recovering_gold_powder_from_aqua_regia_solution_using_SMB_gold_precipitant.png?v=1776430084","url":"https:\/\/www.goldandsilvertesting.com\/products\/gold-precipitant-sodium-metabisulfite-smb","provider":"GOLD TESTING EQUIPMENT","version":"1.0","type":"link"}