Gas sensor specialists continue to improve selectivity and precision

Swiss gas sensor specialists Membrapor strive continuously to improve the selectivity of their sensors to provide even more accurate, selective and safe measurements. This year has been no exception and several enhancements have already come to fruition.

 Membrapor upgraded their CH2O/CA-10 sensor by eliminating its cross-sensitivity to methanol. For selective measurements of formaldehyde (CH2O) concentrations in applications with aqueous CH2O solutions that contain methanol as a stabiliser ("Formalin"). Such solutions are typically used for the fixation or preservation of biological tissue and cells.

The ETO/CA-10’s cross-sensitivity to carbon monoxide (CO) has been reduced.  For selective measurements of ethylene oxide (ETO) concentrations in applications where small amounts of CO, possibly due to vehicle traffic, are present. ETO gas is widely used as a sterilisation agent for a wide range of applications.

Membrapor also launched the AsH3/C-1 and the AsH3/M-1 sensors - two extremely sensitive sensors, which enable the highly toxic gas arsine to be measured in the ppb range. They also designed a gas cap for their compact sensors (7-series). The cap can be used with Membrapor’s digital or analogue electronics as pre-calibrated units