Can Eppendorf micro test tubes be cooled to -200 °C (in He-N2)?
“Fundamentally our micro test tubes can be cooled to this temperature. During cooling, the micro test tube should be kept over the liquid phase, i.e. in the gas phase. Please take care that the tube is not submerged in the liquid phase, because it could explode upon thawing (He-N2 that has penetrated the tube expands at higher ambient temperatures).
