Hydrometer Without Plastic Measuring Cylinder colorimeter chemistry 5 184 238 293 Pack 5 184 238 293 Pack Quantity 20 20 20 20 10 10 5 5 Case Quantity 100 100 100 100 50 50 25 25 Funnel Analytical PP 35 mm PK 20 Funnel Analytical PP 35 mm CS 100 Funnel Analytical PP 45 mm PK 20 Funnel Analytical PP 45 mm CS 100 Funnel Analytical PP 65 mm PK 20 Funnel Analytical PP 65 mm CS 100 Funnel Analytical PP 80 mm PK 20 Funnel Analytical PP 80 mm CS 100 Funnel Analytical PP 100 mm PK 10 Funnel Analytical PP 100 mm CS 50 Funnel Analytical PP 120 mm PK 10 Funnel Analytical PP 120 mm CS 50 Funnel Analytical PP 150 mm PK 5 Funnel Analytical PP 150 mm CS 25 Funnel Analytical PP 180 mm PK 5 Funnel Analytical PP 180 mm CS 25 98 103 200 ml Material: Glass Color: Clear Product Dimension (B x H): 15mm x 300 mm Care Instructions: Handle with care Hydrometer 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