Nalgene Unwire Polypropylene Test Tube Rack, 13mm, Green (Case of 8)
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Feature
Higher specific gravity than water so stays submerged in a water bath-won't floatHold a full load of test tubes or centrifuge tubes for 13, 16, 20, 25 and 30mm sizes or up to 72 smaller diameter tubes can be held at once
Available in four bright colors to help keep samples organized
Endplates accept large labels - for easy identification of samples