ZGR series has its own light source. With the built-in light source, it makes more convenient to use when in a Dark or Dim room or when doing wide-field work.And it also can use the outside light source to test. It is convenient to replace the batteries when they were use out. The models with a high resolution Brix scale are developed for most general purpose work. The ZGRB-32ATC has Automatic Temperature Compensation System.ZGRB-32 also can be used in Oil testing, especially in Industry Fluids--Cutting fluids and Lubricating oil. Specification: Measuring Range:0-32%Brix Minimum Division: 0.2%Brix (ATC) Temperature Compensation Range:10°C-30°C Power Require: 3 &ldquo ” Button Cell (1.5V*3) Battery Life: More than 100hours Light Source: White LED Dimension: 27x40x160mm Accessories included: 1pc Pipette ***Operations manual***Mini-screw driver***Soft protective carrying case or blue plastic case |