13-Tube Wooden Test Tube Rack with Draining Pins, 10.25" Wide Item Type_Net 5 inches of nylon bristles

5 inches of nylon bristles for scrubbing glassware up to 4 inches in diameter

Bulk 144-pack of pre-cleaned 75 x 25mm glass microscope slides features frosted labeling ends and ground polished edges for high-volume teaching labs

this motor-generator pairs a split-ring commutator against slip rings with bulb indicators

5 Pa Bourdon gauge on a powder-coated metal base for whole-class visibility

and concentrated oxidizer monitoring in water-treatment workflows

13-Tube Wooden Test Tube Rack with Draining Pins, 10.25" Wide Item Type_Net 5 inches of nylon bristlesBeech wood test tube rack accommodates 13 tubes up to 25mm diameter in a 10. 25 inch frame with draining pins for post wash inversion and drying.