Polypropylene Test Tube Rack, Standard Diameter_300mm SUPERIOR DURABILITY || Features uniform

SUPERIOR DURABILITY || Features uniform wall thickness ideal for heating and a reinforced rim for protection against high impacts

letting students trace renewable-energy conversion step by step

sized for compact precision-resistor windings and thermocouple junctions in student-built apparatus

and density concepts without needing an electrical power source

Ten-pack of 5mm green through-hole LEDs

Polypropylene Test Tube Rack, Standard Diameter_300mm SUPERIOR DURABILITY || Features uniformPolypropylene test tube rack with two 25 mm outer holes, four 16 mm inner holes, and six drying pins, autoclavable for routine chemistry and biology laboratory use.