Holds 40 18mm (3/4") Tubes
This lightweight polystyrene test tube rack holds 40 18x150mm (3/4x6") glass chemistry test & is handy for doing many experiments; $4.95.
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These plastic racks hold 40 18mm (3/4") diameter standard chemistry lab tubes; rack is made of polystyrene & is shipped unassembled.
See glass science test tubes for our full range of small, medium & large tubes for storage & decorative displays.