TrueAssay
20K Gold Testing Solution – Acid Test for 20 Karat Gold
20K Gold Testing Solution – Acid Test for 20 Karat Gold
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Confirm 20K gold and higher in seconds with TrueAssay 20 Karat Gold Testing Solution. A single drop on a stone streak reveals whether your item is at least 20-karat gold. Trusted by jewelers, pawn shops, refiners, and collectors of high-karat and coin gold.
What's Included
- TrueAssay 20K Gold Testing Solution (choose bottle size)
- Tamper-evident dropper cap
- Product insert with instructions and safety info
Testing stone sold separately.
How to Use
- Rub your gold item firmly on a testing stone to leave a visible streak.
- Apply a single drop of 20K solution directly on the streak.
- If the streak remains unchanged, your item is at least 20K gold. If it fades, it is lower karat.
- Rinse the stone with water and wipe clean before the next test.
Bottle Sizes & Test Counts
- Economy — 30–40 drops
- Small — 150–200 drops
- Medium — 300–400 drops
- Large — 400–550 drops
- Extra Large — 700–900 drops
Who It's For
- Jewelers and bench technicians
- Pawn shops and gold buyers
- Refiners and scrap dealers
- Coin and high-karat gold collectors
Why TrueAssay
- Made in the USA with professional-grade reagents
- Consistent, reliable reactions for high-karat gold
- Tamper-evident packaging for safe shipping
- SDS available on request
FAQ
What does this test verify?
That your gold is 20K or higher. Use our 22K solution to separate 22K from 20K.
Do I need a testing stone?
Yes — a black testing stone is required. Available separately in our store.
How many tests per bottle?
From ~30 drops (Economy) up to ~900 drops (Extra Large).
Safety First
This solution contains strong acid. Wear gloves and eye protection, work in a ventilated area, and keep away from children and pets. Rinse immediately with water in case of skin contact. See 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.
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Trusted by Industry Professionals
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Lab-Tested Quality
Each batch is formulated to professional-grade testing standards used by jewelers and refiners.
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Fast U.S. Shipping
Orders ship same-day from Atlanta, GA. Most U.S. customers receive in 2 to 5 business days.
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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.