Test Tubes in Arlington on YP.com. See reviews, photos, directions, phone numbers and more for the best Hose & Tubing-Rubber & Plastic in Arlington, VA.. Securely hold a full load of test tubes or centrifuge tubes for 13, 16, 20, 25 and 30mm diameter sizes with Thermo Scientific™ Nalgene™ Unwire™ Test Tube Racks. Molded in a single piece for exceptional strength and durability, these racks have no coating to chip, peel or rust. Smooth finish leaves fewer places for contaminants to lodge.

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