Cylindrical Density Jar 250 & 500 ml. A hydrometer or barometer is an instrument that measures the specific gravity (relative density) of liquids—the ratio of the density of the liquid to the density of water. A hydrometer is usually made of plastic, and consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float upright. The liquid to test is poured into a tall container, often a graduated cylinder, and the hydrometer is gently lowered into the liquid until it floats freely. The point at which the surface of the liquid touches the stem of the hydrometer correlates to specific gravity. Hydrometers usually contain a scale inside the stem, so that the person using it can read specific gravity.

About this item

• Glass Cylindrical Test Jar (Measures 250, 500 ml)
• Specially used for Scientific & Laboratory Purposes.
• This image represents the actual product of the image and product size may slightly differ.
• A hydrometer is an instrument that measures the specific gravity of liquids and the ratio of the density of the liquid to the density of water.
• We won't be liable for any duplicate purchases from any other stores.