Ace Glass, 6547-14, 6547 25x215mm Test Tube, #7 Ace-Thred, 22mm I.D., 125mm O.D.X150mm
6547-14 Congealing temperature 25x215mm test tube
. #50 thread at center holds a test tube with a #25 bushing, open top test tube utilizes a rubber stopper to secure a thermometer and wire stirrer, #7 Ace-thred thermometer port on one side, 22mm I.D. opening on the other side to access the 125mm O.D. x 150mm high cylinder. Applicable to substances that melt down between -20 to 150 degree C.