Durac, a part of H-B Instruments, Bel-Art and SP-Scienceware family of brands, is a leading manufacturer of temperature and density measuring instruments for applications in various clinical studies (bacteriology, immunology, cell biology and molecular biology). The extensive H-B Instruments-Durac catalogue includes hydrometers, liquid in glass thermometers, food service thermometers and wall / desk / window thermometers. The brand's liquid in glass thermometers are ideal for verifying sample temperatures in blood bank refrigerators. For different levels of accuracy measurement, these Durac thermometers are offered in different scale divisions and temperature ranges. The ASTM-certified Durac hydrometers are used for measuring specific gravity of both heavy and light liquids in food and beverage, chemical and pharmaceutical industries. Raptor Supplies, one of the authorised Bel-Art distributors, offers a wide range of these Durac instruments in different dimensions and accuracy levels.