TWS-1200K

The TWS-1200K is a precision metal purity tester specially designed for large samples over 1kg, such as gold bullion up to 1200g. Based on the Archimedes principle (buoyancy method), the device rapidly and accurately displays gold karat, density, and purity percentage, equipped with four measurement programs for a wide range of precious metals. Ideal for the jewelry industry, banks, pawnshops, and gold and precious metal research laboratories. Testing requires only two simple steps, with no damage to the sample and no need for sulfuric acid solutions or standard test samples — keeping samples clean after every test. Equipped with an infrared temperature sensor that automatically detects and compensates for water temperature, along with dedicated software that directly displays karat number and purity percentage across multiple alloy combinations (gold-copper-silver, gold-silver, and gold-copper). The device also supports purity testing of other precious metals such as platinum, silver, palladium, copper, and rhodium. Key Features: Large capacity — tests samples up to 1200g (suitable for gold bullion) 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 (174 × 109 × 92 mm) to minimize buoyancy-related error Built-in RS-232 & USB interface Can also function as a general-purpose balance scale