{"product_id":"jsp-gold-precipitant-16-oz-refining-test-acid-aqua-regia-metals-smb-pyrosulfite","title":"JSP Gold Precipitant 16 oz Refining Test Acid Aqua Regia Metals SMB Pyrosulfite","description":"\u003cp data-start=\"249\" data-end=\"502\"\u003eJSP Sodium Metabisulfite (SMB) is a high-purity gold precipitant commonly used in the aqua regia refining process. This 16 oz (1 lb) bag contains \u003cstrong data-start=\"395\" data-end=\"415\"\u003e99% pure Na₂S₂O₅\u003c\/strong\u003e, widely used by refiners to recover dissolved gold from filtered aqua regia solutions.\u003c\/p\u003e\n\u003cp data-start=\"504\" data-end=\"692\"\u003eAlso known as \u003cstrong data-start=\"518\" data-end=\"572\"\u003eSMB, sodium pyrosulfite, or disodium metabisulfite\u003c\/strong\u003e, this chemical is used during the precipitation stage of gold refining to convert dissolved gold back into solid metal.\u003c\/p\u003e\n\u003cp data-start=\"694\" data-end=\"830\"\u003eSodium metabisulfite is a standard refining chemical used by hobby refiners, jewelry recyclers, and precious metal recovery specialists.\u003c\/p\u003e\n\u003chr data-start=\"832\" data-end=\"835\"\u003e\n\u003ch2 data-section-id=\"189qedo\" data-start=\"837\" data-end=\"855\"\u003eProduct Details\u003c\/h2\u003e\n\u003cp data-start=\"857\" data-end=\"976\"\u003ePurity: 99%\u003cbr data-start=\"868\" data-end=\"871\"\u003eChemical Formula: Na₂S₂O₅\u003cbr data-start=\"896\" data-end=\"899\"\u003eNet Weight: 16 oz (1 lb)\u003cbr data-start=\"923\" data-end=\"926\"\u003eGrade: Food \/ Photo Grade\u003cbr data-start=\"951\" data-end=\"954\"\u003eManufacturer: JSP Chem\u003c\/p\u003e\n\u003chr data-start=\"978\" data-end=\"981\"\u003e\n\u003ch2 data-section-id=\"15olgqg\" data-start=\"983\" data-end=\"997\"\u003eCommon Uses\u003c\/h2\u003e\n\u003cp data-start=\"999\" data-end=\"1164\"\u003eGold precipitation from aqua regia solutions\u003cbr data-start=\"1043\" data-end=\"1046\"\u003ePrecious metal recovery and refining\u003cbr data-start=\"1082\" data-end=\"1085\"\u003eScrap gold processing\u003cbr data-start=\"1106\" data-end=\"1109\"\u003eJewelry refining\u003cbr data-start=\"1125\" data-end=\"1128\"\u003eLaboratory and refining applications\u003c\/p\u003e\n\u003chr data-start=\"1166\" data-end=\"1169\"\u003e\n\u003ch2 data-section-id=\"1ofyyws\" data-start=\"1171\" data-end=\"1185\"\u003eTypical Use\u003c\/h2\u003e\n\u003cp data-start=\"1187\" data-end=\"1210\"\u003eFor gold precipitation:\u003c\/p\u003e\n\u003cp data-start=\"1212\" data-end=\"1347\"\u003eMix approximately \u003cstrong data-start=\"1230\" data-end=\"1262\"\u003e1 oz of sodium metabisulfite\u003c\/strong\u003e with \u003cstrong data-start=\"1268\" data-end=\"1318\"\u003e20–30 ml of water per ounce of dissolved metal\u003c\/strong\u003e in your aqua regia solution.\u003c\/p\u003e\n\u003cp data-start=\"1349\" data-end=\"1431\"\u003eAdd slowly while observing the reaction until gold precipitates from the solution.\u003c\/p\u003e\n\u003chr data-start=\"1433\" data-end=\"1436\"\u003e\n\u003ch2 data-section-id=\"6hv2og\" data-start=\"1438\" data-end=\"1457\"\u003ePackage Includes\u003c\/h2\u003e\n\u003cp data-start=\"1459\" data-end=\"1530\"\u003e(1) JSP \u003cstrong data-start=\"1467\" data-end=\"1530\"\u003e16 oz (1 lb) bag of Sodium Metabisulfite – Gold Precipitant\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003e\u003cem\u003eNew to gold refining?\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cem\u003eVisit our Gold Refining Learning Center for beginner-friendly guides that explain the basics of gold recovery, refining concepts, common materials found in electronics, and how precious metals are identified and evaluated.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cem\u003eThese guides are designed to help you better understand refining processes and the tools commonly used in precious metal work.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003e\u003cem\u003eExplore the Learning Center \u003ca href=\"https:\/\/www.goldandsilvertesting.com\/pages\/gold-refining-learning-center\" title=\"Gold Refining Learning Center\" style=\"color: rgb(43, 0, 255);\"\u003eHERE\u003c\/a\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"GOLD TESTING EQUIPMENT","offers":[{"title":"Default Title","offer_id":45591455989804,"sku":"JSP Gold Precipitant 16 oz","price":19.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0728\/0954\/5772\/files\/EtsyItemListingPhoto.png?v=1780422749","url":"https:\/\/smartsupplydeals.com\/products\/jsp-gold-precipitant-16-oz-refining-test-acid-aqua-regia-metals-smb-pyrosulfite","provider":"Smart supply deals","version":"1.0","type":"link"}