... of the instrument is so easy.Advantages:• Smallest and exquisite heavy metal tester• Sensitivity, reached ppb• Fast measuring, single test less ... , copper, and chromium, nickel, manganese, thallium, ferrum and other heavy metal ion monitoring can be expandable. • On-site operating platform for ... is also widely used to detect soil, food, heavy metals in the solid material. Portable Heavy Metal Tester