Drager NIOSH Pattern Silica Gel Tube

Drager NIOSH Pattern Silica Gel Tube: length - 70mm, diameter - 6mm, contents - 150mg and 75mg silica gel

Advice for sample-taking

The air to be analysed must be drawn through the tube at a constant flow rate between 0.01 and 0.2 L/min. During sampling the silicagel tube should be in a vertical position. This guarantees a constant flow through the silicagel.  NIOSH points out in its regulations that the absorption capacity of silicagel is affected by high air humidity, which may result in premature breakthrough of the substance to be measured into the control layer.  A special tube adapter (order no. 6728639) is necessary in order to use Drager pumps for sampling. After sampling the tube must be sealed with the polyethylene supplied caps.

Note concerning the analysis

The enriched volatile organic compounds are analysed in accordance with the procedures recommended by BGIA, DFG, NIOSH, OSHA and HSE.

Note: This product has a shelf life of 2 years.