TWS-300/600K

The TWS-300/600K is a precision metal purity tester based on the Archimedes principle (buoyancy method), rapidly and accurately displaying gold karat, density, and purity percentage in just two simple measurement steps. Designed for the jewelry industry, banks, pawnshops, and precious metal research laboratories, this device delivers reliable results without damaging samples and without the need for sulfuric acid solutions or standard test samples — keeping your samples clean and contamination-free after every test. Equipped with an infrared temperature sensor, the TWS-300/600K automatically detects and compensates for water temperature, ensuring consistent accuracy without manual calibration. Its dedicated software directly displays karat number and purity percentage across multiple alloy combinations (gold-copper-silver, gold-silver, and gold-copper), and also supports purity testing of other precious metals such as platinum, silver, palladium, copper, and rhodium. Key Features: Archimedes principle (buoyancy method) — accurate and non-destructive 4 measurement modes: Gold Purity, Platinum Purity, Alloy Purity & Density Mode 1 and Mode 2 Infrared temperature sensor with automatic compensation Only 2 measurement steps for instant, accurate results No contamination left behind — no sulfuric acid or standard samples required Adjustable Karat lower-limit setting, freely configurable from 1–24K Adjustable PT lower-limit setting, freely configurable from 1–1000 Large water tank design (148 × 100 × 85 mm) to minimize buoyancy-related error Built-in RS-232 & USB interface Can also function as a general-purpose balance scale