Pack of 20 Heavy Duty Glass Test Tube without Rim Earth Worm Model and wire connectors for either

and wire connectors for either binding terminals or alligator clips

Adjustable Blower Speed

providing consistent and reliable heating for your experiments

anatomy classroom

flat handle makes for easy rotating of brush

Pack of 20 Heavy Duty Glass Test Tube without Rim Earth Worm Model and wire connectors for eitherIncluded: 20 x Heavy Duty Glass Test Tube without Rim, Rimless + Round Bottom + Borosillicate 3. 3 Glass. 75mm Length x 12mm Diameter. Premium Quality: Glassware is made of high quality, heavy duty, Borosilicate 3. 3 glass. Autoclavable, with superior chemical durability. Low temperature gradient can withstand high temperatures & thermal shocks. Designed for use in professional laboratories but is an ideal choice for science classrooms and household