Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U1 (Pack of 50) TonGass Part Number: AL00381

Part Number: AL00381

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Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U1 (Pack of 50) TonGass Part Number: AL0038150 hole,Diameter: 18. 7mm 0. 74" These are great for making homemade chapsticks, storing ink samples, test tubes, lip balm, great for holding small cylinders upright Suitable for test tubes with an OD ranging from 15mm to 18mm The test tube rack are made of laboratory grade polystyrene, durable and light weight, easy to carry, not autoclavable The test tube has 3 Layer, 2 slots, each layer has a direction, slide the shelves in from one side, the other