Test Tube Rack with 15ml Plastic Tubes, Rack Set contains twelve 15ml screw top graduated plastic tubes and a brightly colored two tiered test tube stand
Water Treatment and Filtration, Environmental Chemistry, Includes: Fine sand, Coarse sand, Fine gravel, Activated charcoal, alum, lime, Green food coloring, Odor agent, Plastic cups, 5 Stirring sticks, used in examining the changes in the water due to pollution
A non-sterile 2-ply isopropyl alcohol saturated pad that is expertly sealed to ensure that the pad remains fully saturated. With 70% isopropyl alcohol, it can be used as a topical antiseptic and for anti-infective purposes prior to injections