▶ 【Precision Gold Purity Tester】 Boasting a weighing accuracy of up to 0.01 g and a density resolution refined to 0.001 g/cm³, this instrument precisely determines the purity, fineness (K-value), and density of precious metals such as gold, silver, platinum, and palladium ▶ 【Non-Destructive Testing】 Utilizing a non-destructive density analysis method, this digital electronic gold purity tester accurately assesses the purity of gold, silver, and other precious metals without the need to cut, scratch, or alter the sample. It causes no damage or depreciation to jewelry, gold bars, or collectibles, thereby preserving the value of the items while delivering reliable test results ▶ 【Rapid 3-Step Testing】 With just three simple steps—weighing in air, weighing in water, and viewing the direct digital readout—you can quickly and accurately determine the purity percentage and K-value of precious metals. Requiring no complex laboratory equipment or standard reference samples, it is the ideal tool for testing both gold-plated items and solid jewelry ▶ 【Multi-Metal Compatibility】 Compatible with a wide range of metals—including gold, gold alloys (K-gold), platinum, silver, and palladium—the digital display clearly presents the density, volume, purity percentage, and fineness (K-value). It also functions as a general-purpose electronic balance, meeting the diverse material testing needs of jewelers, pawnshops, and quality inspection departments ▶ 【Intuitive Display & Design】 This gold purity tester supports direct connection to a printer for immediate output of test results, facilitating easy record-keeping and archiving. Additionally, it features a built-in rechargeable battery that offers extended standby time, and its design prioritizes portability for convenient use on the go