TrueAssay
9K, 12K, 20K | Acid Test Kit – TrueAssay
9K, 12K, 20K | Acid Test Kit – TrueAssay
Couldn't load pickup availability
Accurate Gold Testing at Home or On the Bench
TrueAssay Gold Testing Solutions let you verify 10K, 14K, and 18K gold in seconds. Whether you're a jeweler, pawnbroker, coin dealer, reseller, or DIY buyer, this 3-bottle set gives you the confidence to buy, sell, and trade gold without guesswork.
What's Included
- TrueAssay 9K Gold Testing Solution
- TrueAssay 12K Gold Testing Solution
- TrueAssay 20K Gold Testing Solution
- Approx. 30 - 40 Tests Per Bottle
- Freshly mixed, US-made, tamper-evident bottles
How to Test Gold (Step-by-Step)
- Rub your item firmly on a testing stone to leave a visible gold streak.
- Apply a single drop of the karat solution directly onto the streak.
- Watch the reaction: if the streak stays, your item is that karat or higher. If it fades or disappears, it's lower.
- Work up through 9K → 12K → 20K to pinpoint the karat.
- Wipe the stone clean with water and a cloth between tests.
Who This Is For
- Jewelers and jewelry repair shops
- Pawn shops and gold buyers
- Coin and bullion dealers
- Resellers sourcing from estate sales, thrift, and auctions
- Private buyers verifying inherited or online-purchased pieces
Why TrueAssay
- Freshly mixed in the USA — potent, reliable reactions
- Leak-resistant dropper bottles — controlled single-drop application
- Clear labeling — color-coded caps so you never grab the wrong karat
- Trusted by thousands of Amazon and Shopify buyers
Frequently Asked Questions
Will this damage my gold?
No. You only test a small streak on a stone — your item itself is not altered.
Does it work on plated jewelry?
Surface tests can read plating as solid gold. For suspected plated items, file a small notch to expose the base metal and test that streak.
How many tests do I get per bottle?
Approximately 400 tests per bottle when using single drops.
How should I store it?
Keep tightly capped, upright, in a cool, dark place away from children and pets.
Do you sell a testing stone?
Yes — pair this set with our TrueAssay testing stone for best results.
Safety First
These solutions contain strong acids. Wear gloves and eye protection, work in a ventilated area, and keep away from children and pets. In case of skin contact, rinse immediately with plenty of water. See the included SDS for full handling details.
Disclaimer
Acid testing is a screening method. For high-value items, confirm results with XRF analysis or a certified assay.
Share
Trusted by Industry Professionals
-
Lab-Tested Quality
Each batch is formulated to professional-grade testing standards used by jewelers and refiners.
-
Fast U.S. Shipping
Orders ship same-day from Atlanta, GA. Most U.S. customers receive in 2 to 5 business days.
-
Helpful Customer Support
Questions about testing technique or kits? Reach our team for guidance before and after your purchase.
Frequently Asked Questions
How do I use the testing solution?
Rub the metal on a testing stone, apply a drop of acid to the streak, then compare the color reaction to the standard chart for that karat.
How fast does my order ship?
Orders placed before 2 PM EST ship the same business day from Atlanta, GA. Most U.S. orders arrive in 2 to 5 business days.
Are these solutions safe to handle?
Our acid solutions are professional-grade and should be handled with gloves and eye protection in a well-ventilated area. SDS sheets are available on request.
What's your return policy?
Unopened items can be returned within 30 days of delivery. Opened acid bottles cannot be returned for safety and shipping reasons.