Increase your scale of growth with vented 5L Erlenmeyershaker flasks for suspension cells, microbial cultures, flora growth, media preparation, storage, and all related sterile applications. Flasks are made from Styrene Butadiene and fit standard 5L flask clamps. Sterilized by Gamma irradiation to SAL 10-6 and packed in individually wrapped bags. 4 flasks per case. Non-pyrogenic, RNase/DNase free Caps are made from HDPE Bottle dimensions are: 90mm neck, 285mm height, 230mm diameter Tips: · Recommended volume: 30-40% of the bottle volume · Rotation speed suggestion: the starting speed is 75-125RPM, you can control the rotation speed according to the situation