Test Tube Set, 6 Glass Test Tubes with Rubber Stoppers and Rack, 18 X 150mm Size
A high quality test tube set for scientific, educational, hobby or display use. The test tubes are laboratory grade Borosilicate glass with rims and measure 18 x 150mm (5/8 x 6") The tubes are fitted with #1 rubbers stoppers. The rack is made of high-impact ABS plastic, resistant to weak acids and bases.  Tubes may be stored upright or inverted over the drying pins.