Acid Test vs XRF Analysis: Which Gold Testing Method Should You Choose?
- Category: Gold Testing Tips
- Date: 04-07-2026
Both acid testing and XRF (X-ray fluorescence) analysis are trusted methods for verifying gold purity, but they serve different needs. Here is how to decide which is right for you.
Acid Testing
Acid test kits are affordable, portable, and simple to use. They work by applying a small amount of acid to a scratch on the metal and observing the reaction. This method is semi-destructive, since it requires a small mark on the item, but it is highly effective for spot-checking purity at markets, pawn shops, and small jewelry counters.
XRF Analysis
XRF analyzers use X-ray technology to measure the exact elemental composition of a piece without damaging it. This makes XRF ideal for high-value items, antique jewelry, or situations where the customer does not want any mark left on their gold. XRF also gives a precise percentage breakdown, not just a karat estimate.
Which Should You Choose?
If you need a low-cost, reliable method for frequent spot checks, an acid test kit is a smart starting point. If your business handles higher volumes, higher value items, or you want to offer clients a non-destructive verification experience, investing in a Vanta handheld XRF analyzer will pay for itself in credibility and speed.
Many of our clients use both: acid kits for quick first checks, and XRF analyzers to confirm and document final results.