Our office will be closed Monday 5/29/23 in honor of Memorial Day. Orders made this day will be processed 5/30/23.
RKI Humidity Filter Disk is needed when ordering the for Phosohine (PH3) sensor individually. The PH3 sensor utilizes a humidity filter to prevent unstable readings around 0 ppm. Sold 5 filters per pack.
Part Number:
33-7133
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