Description
A classic, cost-effective workflow for jewellery and scrap gold. Rub a clear trace on the supplied stone, apply the matching solution and compare the reaction while following all label and safety instructions.
Best for
Traditional carat screening of jewellery and scrap gold
Measurement method
Touchstone assay with gold test acids
Important limitation
The method marks the touchstone and may require a small abrasion on the object. It is surface-oriented and depends on correct technique and interpretation.
Highlights
- Four gold test ranges: 8K, 14K, 18K and 21K
- Includes touchstone and care product
- Quick comparative result
- Compact wooden storage case
Scope of delivery
- Gold acids: 8K, 14K, 18K and 21K
- Touchstone
- Touchstone care product
- Wooden storage case
- Detailed instructions
Specifications
| Gold ranges | 333 / 585 / 750 / 875 |
|---|---|
| Bottle size | 20 ml per solution |
| Method | Touchstone assay |
| Handling | Protective chemical handling required |
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