The products are made of Borosicate 3.3 glass.
According to its pore size, the sand core filter plate can be divided into six specifications of G1 - G5.
National Standard Aperture Use
G1 50-70um filter out coarse precipitate and gelatinous precipitate
G2 30-50um filter out coarse precipitation and gas washing
G3 16-30um filter out fine precipitate, filter mercury
G4 4 - 7um filter out fine or extremely fine precipitates
G5 2 - 4um filter out larger bacilli and yeast

Product All Model List
O.D. of Column: 15mm,20mm,25mm,30mm,40mm,50mm,60mm,70mm,80mm
Effective Column Length: 200mm,300mm,400mm,500mmm

Liquid storage ball capacity:100ml,250ml
*This product can be customized with other pore size sand cores and appearance models. If you need to customize other types of this series chromatography columns, please communicate with us through Amazon message and we will customize the products you need.