{"title":"Gold \u0026 Silver Acid Testing Kits","description":"\u003cp dir=\"auto\" class=\"PDq2pG_selectionAnchorContainer\"\u003eTest precious metals with confidence using ASR Outdoor gold and silver acid testing kits. Designed for jewelers, collectors, prospectors, resellers and hobbyists, these kits provide the tools needed to help evaluate gold and silver jewelry, coins, scrap metal, nuggets and other precious metal items. Choose from gold testing solutions for common karat levels including 10K, 14K, 18K and 22K, as well as silver testing solutions for identifying and evaluating silver content.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAvailable kits may include testing acids, black testing stones and neutralizer solutions for a more complete testing setup. Whether you are checking an estate jewelry find, evaluating precious metals in the field or adding testing supplies to your jeweler’s bench, ASR Outdoor offers practical gold and silver testing tools for convenient at-home, shop or field use. Always follow product instructions and recommended safety precautions when handling acid testing solutions.\u003c\/p\u003e","products":[{"product_id":"asr-outdoor-gold-testing-kit-with-acid-testing-solution-scratch-stone-2pc","title":"2pc Gold Testing Kit with Acid Testing Solution \u0026 Scratch Stone (10k, 14k, 18k or 22k)","description":"\u003cp\u003eTest gold quickly and conveniently with ASR Outdoors Gold Testing Kit with Acid Testing Solution and Scratch Stone. Designed for gold prospectors, gold panners, miners, collectors and hobbyists, this compact kit provides the essential tools needed for traditional acid based gold testing.\u003c\/p\u003e\n\u003cp\u003eThe included gold acid testing solutions (choose from 10k, 14k, 18k or 22k), are formulated for checking gold of the corresponding karat, while the included scratch stone provides a durable surface for creating a test streak. Together, they offer a simple and portable way to perform preliminary gold purity testing at home, in the workshop or even out in the field, making the bundle a practical addition to your prospecting gear when you want a closer look at what you’ve recovered.\u003c\/p\u003e\n\u003cp\u003eCompact and easy to keep with your field or home testing supplies, this two piece kit is well suited for prospecting trips, claim work, sampling sessions and post trip sorting and sampling. Whether you’re checking a promising find or adding another useful tool to your gold panning setup, it’s a straightforward way to support your identification process.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eFor best results, follow all product instructions and recommended safety precautions when handling acid testing solutions. Acid testing is intended as a preliminary identification method and should not be considered a substitute for professional precious metal analysis when exact purity verification is required.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHOW TO TEST GOLD WITH A SCRATCH STONE \u0026amp; ACID TESTING SOLUTION:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBefore Testing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWear protective gloves and eye protection and work in a well-ventilated area. Gold testing solutions contain corrosive acids and should be handled carefully. Keep testing solutions away from children, skin, eyes, clothing and surrounding surfaces. Always follow the safety information provided on the product label and included instructions sheet.\u003c\/p\u003e\n\u003cp\u003eFor best results, make sure the gold sample and scratch stone are clean and dry before beginning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSINGLE KARAT TESTING BUNDLES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor kits containing a scratch stone and one 10K, 14K, 18K or 22K testing solution:\u003c\/p\u003e\n\u003cp\u003eCreate a Test Streak: Firmly rub the suspected gold across the scratch stone several times to leave a clear, visible metal streak.\u003c\/p\u003e\n\u003cp\u003eApply the Testing Solution: Place a small drop of the included gold testing solution directly onto the streak. Do not allow the bottle tip or dropper to touch the testing stone or sample.\u003c\/p\u003e\n\u003cp\u003eObserve the Reaction: Watch what happens to the streak where the solution was applied.\u003c\/p\u003e\n\u003cp\u003eIf the streak remains visible and largely unaffected: The sample may be at least the karat level indicated by the testing solution. If the streak dissolves or disappears: The sample is likely below the karat level indicated by the testing solution or may not be gold.\u003c\/p\u003e\n\u003cp\u003eClean the Testing Area: Carefully remove any remaining test solution according to the product instructions before performing another test.\u003c\/p\u003e\n\u003cp\u003eExample: When using a 14K testing solution, a streak that remains may indicate the sample is approximately 14K gold or higher. If the streak dissolves, the sample is likely below 14K.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eIMPORTANT TESTING TIPS:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eBegin with the lowest-karat solution and work upward when using a multi-solution kit.\u003cbr\u003eUse a clearly visible metal streak for easier observation.\u003cbr\u003eUse a fresh or thoroughly cleaned section of the stone between different testing solutions.\u003cbr\u003eNever touch the acid bottle or dropper tip directly to the scratch stone or sample.\u003cbr\u003eRecap each testing solution immediately after use.\u003cbr\u003eDo not mix testing solutions together.\u003cbr\u003eNeutralizer is intended to help neutralize residual testing acid during cleanup; it does not replace gloves, eye protection, proper ventilation, or other safety precautions.\u003cbr\u003eAcid testing provides a preliminary indication of gold purity rather than an exact assay.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eA NOTE FOR PROSPECTORS: \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eNaturally occurring gold can vary considerably in purity and may contain silver, copper, or other minerals. Gold flakes, nuggets, and specimens may also contain attached rock or mineral material that can affect testing. For these reasons, acid testing is best used as a preliminary field or home identification method rather than a precise measurement of gold content. For exact gold purity, composition, or value, additional professional testing may be required.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003e\u003cimg height=\"78\" width=\"273\" alt=\"California Proposition 65 warning\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0783\/2056\/6572\/files\/Shopify_Prop65graphic_480x480.jpg?v=1692130729\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"ASR Outdoor","offers":[{"title":"10K","offer_id":54058540073260,"sku":"SON-ASRO-10KGOLDTESTSTONE-BUN","price":16.99,"currency_code":"USD","in_stock":true},{"title":"14K","offer_id":54058540106028,"sku":"SON-ASRO-14KGOLDTESTSTONE-BUN","price":16.99,"currency_code":"USD","in_stock":true},{"title":"18K","offer_id":54058540138796,"sku":"SON-ASRO-18KGOLDTESTSTONE-BUN","price":16.99,"currency_code":"USD","in_stock":true},{"title":"22K","offer_id":54058540171564,"sku":"SON-ASRO-22KGOLDTESTSTONE-BUN","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/2056\/6572\/files\/ASRO_GOLD_SILVER_ACID_TESTING_SOLUTION_10K_GOLD_MAIN.jpg?v=1790363676"},{"product_id":"asr-outdoor-silver-fineness-and-purity-testing-kit-with-acid-testing-solution-scratch-stone-2pc","title":"2pc Silver Testing Solution for General Silver Quality and Metal Identification with Scratch Stone Set","description":"\u003cp\u003eQuickly evaluate suspected silver with this Silver Acid Testing Solution, designed for prospectors, metal detectors, collectors, miners and hobbyists who want a straightforward way to screen recovered or unidentified metal. The solution produces different color reactions that can help indicate whether a test sample is higher-quality silver, lower-quality silver, copper-rich material, or potentially silver plated.\u003c\/p\u003e\n\u003cp\u003eWhen applied according to the manufacturer’s testing instructions, the reaction provides an easy-to-read visual indication of the sample's general silver quality. A creamy reaction typically indicates higher-quality silver such as sterling, while black may indicate coin-quality silver. A green reaction suggests a higher copper content, while a gold-colored reaction can indicate significant brass content and may suggest a silver-plated item.\u003c\/p\u003e\n\u003cp\u003eThis testing solution is intended as a general silver identification and quality screening tool rather than a precise silver purity test. It does not differentiate specific fineness levels such as .999, .925, or .800 silver. For testing that requires more detailed differentiation between silver purity levels, a specialized silver testing solution such as the manufacturer's #GT41 red-color test solution should be used.\u003c\/p\u003e\n\u003cp\u003eCompact and easy to keep with prospecting supplies, metal detecting gear, field-testing equipment, or a home metal identification station, this silver acid test solution is a practical addition for evaluating interesting finds.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eAlways follow the manufacturer’s instructions and recommended safety precautions when handling acid testing solutions. Acid testing provides a preliminary indication and should not be considered a substitute for professional precious-metal analysis.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes: 1 Silver Acid Testing Solution and 1 Scratch Stone.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBEFORE TESTING:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWear protective gloves and eye protection and work in a well-ventilated area. Gold testing solutions contain corrosive acids and should be handled carefully. Keep testing solutions away from children, skin, eyes, clothing, and surrounding surfaces. Always follow the safety information provided on the product label and included instructions sheet.\u003c\/p\u003e\n\u003cp\u003eFor best results, make sure the gold sample and scratch stone are clean and dry before beginning.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHOW TO TEST SILVER:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eCreate a Test Streak: Rub the object firmly across the scratch stone to leave a clear metal streak.\u003c\/p\u003e\n\u003cp\u003eCreate a Reference Streak: Next to the sample streak, make a parallel streak using a silver testing needle marked .999.\u003c\/p\u003e\n\u003cp\u003eApply the Testing Solution: Place a small drop of silver testing solution on both the sample streak and the .999 reference streak.\u003c\/p\u003e\n\u003cp\u003eObserve the Reaction: Watch the color change on the sample streak and compare the reaction to the reference line.\u003c\/p\u003e\n\u003cp\u003eColor reactions can vary depending on the sample, surface condition, and testing method. Acid testing provides a preliminary indication of silver content and should not be considered an exact assay.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003e\u003cimg height=\"78\" width=\"273\" alt=\"California Proposition 65 warning\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0783\/2056\/6572\/files\/Shopify_Prop65graphic_480x480.jpg?v=1692130729\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"ASR Outdoor","offers":[{"title":"Default Title","offer_id":54058543350060,"sku":"SON-ASRO-GT43SILVERTESTSTONE-BUN","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/2056\/6572\/files\/ASRO_SILVER_ACID_TESTING_SOLUTION_CLEAR_SOLUTION_GT43_MAIN.jpg?v=1790365275"},{"product_id":"asr-outdoor-silver-testing-solution-for-general-silver-quality-and-metal-identification-with-scratch-stone-2pc","title":"2pc Silver Fineness and Purity Testing Kit with Acid Testing Solution \u0026 Scratch Stone Set","description":"\u003cp\u003eTest and compare silver fineness with the Silver Fineness Testing Kit with Acid Testing Solution and Scratch Stone. Designed for prospectors, metal detectors, collectors, miners and hobbyists, this compact two piece kit provides a traditional acid testing method for taking a closer look at suspected silver finds.\u003c\/p\u003e\n\u003cp\u003eUnlike general silver screening solutions that primarily indicate broad differences in metal quality or composition, the included red silver testing solution is designed to help distinguish between different silver fineness levels. When used according to the manufacturer’s testing method, the resulting color reaction can help indicate approximate grades such as .999 fine silver, .925 sterling silver, .800 silver, and .500 silver.\u003c\/p\u003e\n\u003cp\u003eThe included scratch stone provides a durable surface for creating a test streak before applying the solution. This makes the kit a practical addition to prospecting supplies, metal detecting gear, field-testing equipment, or a home precious-metal identification setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes: 1 Silver Acid Testing Solution and 1 Scratch Stone.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eAlways follow the included instructions and recommended safety precautions when handling acid testing solutions. Acid testing provides a preliminary indication only and should not be considered a substitute for professional precious-metal analysis when exact composition or purity verification is required.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBEFORE TESTING:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWear protective gloves and eye protection and work in a well-ventilated area. Testing solutions contain corrosive acids and should be handled carefully. Keep testing solutions away from children, skin, eyes, clothing, and surrounding surfaces. Always follow the safety information provided on the product label and included instructions sheet.\u003c\/p\u003e\n\u003cp\u003eFor best results, make sure the gold sample and scratch stone are clean and dry before beginning.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHOW TO TEST SILVER:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eCreate a Test Streak: Rub the object firmly across the scratch stone to leave a clear metal streak.\u003c\/p\u003e\n\u003cp\u003eCreate a Reference Streak: Next to the sample streak, make a parallel streak using a silver testing needle marked .999.\u003cbr\u003eApply the Testing Solution: Place a small drop of silver testing solution on both the sample streak and the .999 reference streak.\u003c\/p\u003e\n\u003cp\u003eObserve the Reaction: Watch the color change on the sample streak and compare the reaction to the reference line.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSILVER TEST RESULTS:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e.999 Fine Silver: Bright red\u003cbr\u003e.925 Sterling Silver: Dark red\u003cbr\u003e.800 Silver: Brown\u003cbr\u003e.500 Silver: Green\u003c\/p\u003e\n\u003cp\u003eColor reactions can vary depending on the sample, surface condition, and testing method. Acid testing provides a preliminary indication of silver content and should not be considered an exact assay.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003e\u003cimg height=\"78\" width=\"273\" alt=\"California Proposition 65 warning\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0783\/2056\/6572\/files\/Shopify_Prop65graphic_480x480.jpg?v=1692130729\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"ASR Outdoor","offers":[{"title":"Default Title","offer_id":54058543874348,"sku":"SON-ASRO-GT41SILVERTESTSTONE-BUN","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/2056\/6572\/files\/ASRO_SILVER_ACID_TESTING_SOLUTION_RED_SOLUTION_GT41_MAIN.jpg?v=1790364924"},{"product_id":"asr-outdoor-complete-gold-testing-kit-with-acid-testing-solution-scratch-stone-set-5pc","title":"5pc Complete Gold Testing Kit with Acid Testing Solution \u0026 Scratch Stone Set","description":"\u003cp\u003eTake a closer look at your finds with this Gold Testing Kit with Scratch Stone and 10K, 14K, 18K \u0026amp; 22K Acid Testing Solutions. Designed for gold prospectors, panners, miners, collectors, and hobbyists, this complete testing set provides the essential tools needed for traditional acid-based gold testing in one convenient kit.\u003c\/p\u003e\n\u003cp\u003eThe included 10K, 14K, 18K, and 22K gold testing solutions allow you to compare suspected gold against multiple karat levels, while the scratch stone provides a durable surface for creating test streaks. Whether you’re examining nuggets or other suspected gold material recovered while panning, sluicing or prospecting, this kit provides a practical way to perform preliminary gold purity testing.\u003c\/p\u003e\n\u003cp\u003eWith four testing solutions included, this kit offers greater versatility than a single-karat test and makes it easy to keep multiple testing options together in one compact setup. It’s a useful addition to a gold prospecting kit, home testing station, workshop, claim setup, or field gear collection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes: 1 Scratch Stone, 1 bottle of 10K Gold Testing Solution, 1 bottle of 14K Gold Testing Solution, 1 bottle of 18K Gold Testing Solution, and 1 bottle of 22K Gold Testing Solution.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eAlways follow the included instructions and recommended safety precautions when handling acid testing solutions. Acid testing provides a preliminary indication of gold purity and should not be considered a substitute for professional precious-metal analysis when exact composition or purity verification is required.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHOW TO TEST GOLD WITH A SCRATCH STONE \u0026amp; ACID TESTING SOLUTION:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBefore Testing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWear protective gloves and eye protection and work in a well-ventilated area. Gold testing solutions contain corrosive acids and should be handled carefully. Keep testing solutions away from children, skin, eyes, clothing, and surrounding surfaces. Always follow the safety information provided on the product label and Safety Data Sheet.\u003c\/p\u003e\n\u003cp\u003eFor best results, make sure the gold sample and scratch stone are clean and dry before beginning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor kits containing a scratch stone plus 10K, 14K, 18K, and 22K testing solutions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCreate a Test Streak: Firmly rub the suspected gold across the scratch stone several times to produce a clear metal streak.\u003cbr\u003eStart with the 10K Solution: Apply a small drop of 10K testing solution to part of the streak.\u003c\/p\u003e\n\u003cp\u003eCheck the Result: If the streak dissolves, the sample is likely below 10K or may not be gold. If the streak remains, continue testing with the next solution.\u003c\/p\u003e\n\u003cp\u003eMove Up Through the Karats: Create a fresh streak or use a clean section of the stone and repeat the process with the 14K solution, followed by the 18K and 22K solutions as needed.\u003c\/p\u003e\n\u003cp\u003eIdentify the Approximate Range: The highest-karat solution that leaves the streak intact provides an indication of the sample's approximate gold purity.\u003c\/p\u003e\n\u003cp\u003eExample: If the streak remains after applying 14K solution but dissolves when tested with 18K solution, the sample is likely between those two purity levels.\u003c\/p\u003e\n\u003cp\u003eIf the streak remains when tested with the 22K solution, the sample may be approximately 22K gold or higher.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eIMPORTANT TESTING TIPS:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eBegin with the lowest-karat solution and work upward when using a multi-solution kit.\u003cbr\u003eUse a clearly visible metal streak for easier observation.\u003cbr\u003eUse a fresh or thoroughly cleaned section of the stone between different testing solutions.\u003cbr\u003eNever touch the acid bottle or dropper tip directly to the scratch stone or sample.\u003cbr\u003eRecap each testing solution immediately after use.\u003cbr\u003eDo not mix testing solutions together.\u003cbr\u003eAcid testing provides a preliminary indication of gold purity rather than an exact assay.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eA NOTE FOR GOLD PROSPECTORS: \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eNaturally occurring gold can vary considerably in purity and may contain silver, copper, or other minerals. Gold flakes, nuggets, and specimens may also contain attached rock or mineral material that can affect testing. For these reasons, acid testing is best used as a preliminary field or home identification method rather than a precise measurement of gold content. For exact gold purity, composition, or value, additional professional testing may be required.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003e\u003cimg height=\"78\" width=\"273\" alt=\"California Proposition 65 warning\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0783\/2056\/6572\/files\/Shopify_Prop65graphic_480x480.jpg?v=1692130729\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"ASR Outdoor","offers":[{"title":"Default Title","offer_id":54058556293420,"sku":"SON-ASRO-GOLDTESTKITWSTONE-5PC-BUN","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/2056\/6572\/files\/ASRO_GOLD_SILVER_ACID_TESTING_SOLUTION_5PC_KIT_MAIN.jpg?v=1790364413"},{"product_id":"asr-outdoor-complete-gold-testing-kit-with-10k-14k-18k-22k-solutions-scratch-stone-neutralizer-6pc","title":"6pc Complete Gold Testing Kit with 10K, 14K, 18K \u0026 22K Solutions, Scratch Stone \u0026 Neutralizer","description":"\u003cp\u003eTake a closer look at your finds with this Gold Testing Kit with Scratch Stone, 10K, 14K, 18K \u0026amp; 22K Testing Solutions, and Test Acid Neutralizer. Designed for gold prospectors, panners, miners, collectors, and hobbyists, this complete testing set provides the essential tools needed for traditional acid-based gold testing in one convenient kit.\u003c\/p\u003e\n\u003cp\u003eThe included 10K, 14K, 18K, and 22K gold testing solutions allow you to compare suspected gold across multiple karat levels, while the scratch stone provides a durable surface for creating test streaks. Whether you’re examining nuggets or other suspected gold material recovered while panning, sluicing or prospecting, this kit provides a practical way to perform preliminary gold purity testing.\u003c\/p\u003e\n\u003cp\u003eAlso included is a test acid neutralizer, which helps neutralize residual testing acid between tests and reduces the risk of cross contamination when moving from one testing solution to another. This added step helps keep your testing process clean when evaluating multiple samples or karat levels.\u003c\/p\u003e\n\u003cp\u003eWith four karat-specific testing solutions, a scratch stone, and neutralizer included, this kit offers a more complete gold testing setup for use in the field, workshop, claim site, or at home.\u003c\/p\u003e\n\u003cp\u003eIncludes: 1 Scratch Stone, 1 bottle of 10K Gold Testing Solution, 1 bottle of 14K Gold Testing Solution, 1 bottle of 18K Gold Testing Solution, 1 bottle of 22K Gold Testing Solution, and 1 bottle of Test Acid Neutralizer.\u003c\/p\u003e\n\u003cp\u003eAlways follow the included instructions and recommended safety precautions when handling acid testing solutions and neutralizer. Acid testing provides a preliminary indication of gold purity and should not be considered a substitute for professional precious-metal analysis when exact composition or purity verification is required.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHOW TO TEST GOLD WITH A SCRATCH STONE \u0026amp; ACID TESTING SOLUTION:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBefore Testing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWear protective gloves and eye protection and work in a well-ventilated area. Gold testing solutions contain corrosive acids and should be handled carefully. Keep testing solutions away from children, skin, eyes, clothing, and surrounding surfaces. Always follow the safety information provided on the product label and Safety Data Sheet.\u003c\/p\u003e\n\u003cp\u003eFor best results, make sure the gold sample and scratch stone are clean and dry before beginning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor kits containing a scratch stone plus 10K, 14K, 18K, and 22K testing solutions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCreate a Test Streak: Firmly rub the suspected gold across the scratch stone several times to produce a clear metal streak.\u003c\/p\u003e\n\u003cp\u003eStart with the 10K Solution: Apply a small drop of 10K testing solution to part of the streak.\u003c\/p\u003e\n\u003cp\u003eCheck the Result: If the streak dissolves, the sample is likely below 10K or may not be gold. If the streak remains, continue testing with the next solution.\u003c\/p\u003e\n\u003cp\u003eMove Up Through the Karats: Create a fresh streak or use a clean section of the stone and repeat the process with the 14K solution, followed by the 18K and 22K solutions as needed.\u003c\/p\u003e\n\u003cp\u003eIdentify the Approximate Range: The highest-karat solution that leaves the streak intact provides an indication of the sample's approximate gold purity.\u003c\/p\u003e\n\u003cp\u003eExample: If the streak remains after applying 14K solution but dissolves when tested with 18K solution, the sample is likely between those two purity levels.\u003c\/p\u003e\n\u003cp\u003eIf the streak remains when tested with the 22K solution, the sample may be approximately 22K gold or higher.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBetween Tests:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAfter observing the result, apply the test acid neutralizer to the used area of the scratch stone according to the neutralizer instructions. Allow the neutralizer to contact the remaining testing solution, then carefully blot the area with a disposable paper towel.\u003c\/p\u003e\n\u003cp\u003eMake sure the testing area is clean and dry before beginning the next test. Using the neutralizer between testing solutions helps remove residual acid and reduce the chance of cross contamination between tests.\u003c\/p\u003e\n\u003cp\u003eFor the cleanest results, use a fresh section of the scratch stone for each karat test whenever possible.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eIMPORTANT TESTING TIPS:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eBegin with the lowest-karat solution and work upward when using a multi-solution kit.\u003cbr\u003eUse a clearly visible metal streak for easier observation.\u003cbr\u003eUse a fresh or thoroughly cleaned section of the stone between different testing solutions.\u003cbr\u003eNever touch the acid bottle or dropper tip directly to the scratch stone or sample.\u003cbr\u003eRecap each testing solution immediately after use.\u003cbr\u003eDo not mix testing solutions together.\u003cbr\u003eNeutralizer is intended to help neutralize residual testing acid during cleanup; it does not replace gloves, eye protection, proper ventilation, or other safety precautions.\u003cbr\u003eAcid testing provides a preliminary indication of gold purity rather than an exact assay.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eA NOTE FOR GOLD PROSPECTORS: \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eNaturally occurring gold can vary considerably in purity and may contain silver, copper, or other minerals. Gold flakes, nuggets, and specimens may also contain attached rock or mineral material that can affect testing. For these reasons, acid testing is best used as a preliminary field or home identification method rather than a precise measurement of gold content. For exact gold purity, composition, or value, additional professional testing may be required.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003e\u003cimg height=\"78\" width=\"273\" alt=\"California Proposition 65 warning\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0783\/2056\/6572\/files\/Shopify_Prop65graphic_480x480.jpg?v=1692130729\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"ASR Outdoor","offers":[{"title":"Default Title","offer_id":54072112939308,"sku":"SON-ASRO-GOLDTESTKITWSTONE-6PC-BUN","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/2056\/6572\/files\/ASRO_GOLD_ACID_TESTING_SOLUTION_6PC_KIT_MAIN.jpg?v=1790366812"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/2056\/6572\/collections\/ASRO_SHOPIFY_collection_images_GOLD_TESTING_a63348bf-1fe8-41b5-9d4c-3add3bcd3549.jpg?v=1790367965","url":"https:\/\/asroutdoor.com\/collections\/gold-silver-acid-testing-solutions.oembed","provider":"ASR Outdoor","version":"1.0","type":"link"}