Patinas for Metal Artists
Barometric Pressure and Humidity
Photo Processes and Formulas
Science Experiments
Laboratory Procedures
Biodiesel Processing
White polyethylene in-line rack has twelve 24mm holes. Sides are open for clear viewing. For test tubes 75mm or longer.
Disassembles for easy cleaning and storage.
This test tube rack can hold test tubes awaiting reaction results and to store them.
Pyrex Test Tube 15x125mm Cat. No. - NC-0994 $1.35
Rubber Stoppers, Solid #00, Pk/6 Cat. No. - NC-0968-PK6 $2.40
Copper Electrode Strip Cat. No. - NC-5321 $3.70
Iron Electrode Strip Cat. No. - NC-5322 $3.40