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Feature

Test tubes measure 18 x 150ml with a capacity of 23ml
Made of heat-resistant Borosilicate glass
Rims are fire-polished for extra strengh
Fitted with #1 rubber stoppers
Re-usable grade glassware - not cheap disposable

Description

A 12 pack of test tubes fitted with matching rubber stoppers, the workhorse of any laboratory. Also handy around the shop, school, or home, for storage and display of solids or liquids.