A density tester is an instrument for measuring the density of a substance. Since there is a relationship between density and specific gravity, the densitometer can also be used as a hydrometer. The density meter is divided into liquid density meter, gas density meter and solid density meter according to its use.

At present, according to the physical property of the sample, the density tester can be divided into the following categories: First, multi-functional solid-liquid dual-purpose density tester

1. Practical solid-liquid dual-purpose density tester

2. High precision solid-liquid dual-purpose density tester

Second, the solid apparent density tester of non-absorbent products

1. Rubber and plastic special density tester

2. Practical solid density tester

3. High precision solid density tester

Third, liquid relative density and concentration tester

1. Economical liquid density and concentration tester

2. High precision liquid density and concentration tester

3. Special density tester for medium and high viscous liquid

Fourth, absorbent solid special density tester

1. Special density tester for fine ceramics

2. Special density tester for powder metallurgy

3. Special density tester for magnetic materials

4. Wood basic density, air dry density tester

5. Ten soils special density tester

6. Oil-bearing oil content tester