High Efficiency Erlenmeyer Flask With ISO9001&13485 certified, High Efficiency Erlenmeyer Flask are manufactured in 100,000 grade cleaning room with USP 6 grade raw materials. Material: PC Bottle & HDPE Cap & Nylon Handle, Vent caps with 0.2um hydrophobic filters for gas exchange without contamination. Product Feature: • There’s a scale made by injection molding on the flask body to facilitate observing the filled liquid volume.• Sterilized by E-beam, SAL=10-6.• Non-Pyrogenic, DNase/Rnase free.• Individually packaged in sterile bag. Application: Ideal for shaker culture applications. 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;· The liquid shake shaker should pay attention to the water level, the gas shake shaker should pay attention to the temperature