Z-shaped thick brushed aluminum test tube rack resists rusting. Heavy low form construction prevents tipping. Etched row numbers allow for easy identification. Same size racks can slide into each other for compact storage. Easy to clean. Holds: All 6-inch, 16x150mm tubes; All 5-inch, 16x125 tubes; All 4-inch, 17x100 tubes and All 4-inch, 16x100mm tubes.
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