Unwire^™ full racks, polyketone 

Molded of durable polyketone. Unwire test tube racks have no coating that can chip or peel and permit corrosion. Excellent replacement for wire racks; withstands most lab chemicals. Excellent thermal properties and won't get brittle in freezers. Grid design allows tubes to be tipped from side to side for clearly marking position. These racks will not float in water baths.

Unwire is a trademark of Nalge Nunc International.