Kitagawa Detector Tubes – Silica-gel tube

Kitagawa Detector Tubes – Silica-gel tube. 801 is designed for sampling organic solvents in environmental air. Particularly suited for polar solvents such as Methanol and Acetone which cannot be sufficiently adsorbed onto charcoal. Organic solvent vapor is adsorbed onto the silica gel while passing through the tube. Adsorbed solvent is recovered with a desorption solvent followed by gaschromatographic analysis. When sample air corresponding to 60 to 80 & of the amount causing breakthrough is passed, the color begins to change from blue to pink by the moisture from the silica gel side predicting breakthrough.