"WardsSci000504"

Made of wood with turned wood posts. Has holes for tubes up to 19 mm in diameter.

Hold a variety of test tubes up to 20 mm.

With drilled holes to accommodate seven tubes up to 13 mm in dia. Strongly constructed with dovetail joints. Size: 2-3/8" H x 7-7/8 W x 1-3/8" D.

Welded steel, zinc plated. Consists of two shelf levels for guides and a third elevated bottom shelf on which the tubes rest. 40 positions, in four rows of 10 holes each, accept tubes up to 22 mm diameter. Dimensions: 3-1/8" H x 10-5/8" W x 4-3/4" D.

Constructed from a solid wood block, with 15 slotted holes accommodating tubes up to 13 mm in dia. Size: 1-3/4" H x 8-1/2" W x 2" D.