so flip it once the working face has loaded up

You could get it clean by scrubbing it with a scrub brush

Hel-Gel ORANGE is a citrus based gel that is quite unlike any competitive product: it WILL NOT leave a dirt attracting residue

Even small amounts of contamination

Dependable Twin-Cylinder OHV Design with External Oil Cooler and 3-year warranty

Delmhorst TotalCheck 3 in 1 Moisture Meter & Thermohygrometer (with Case) Base UOM:EACH so flip it once theDelmhorst TotalCheck 3 in 1 Moisture Meter & Thermohygrometer With Case: includes meter, (1) RHT S3 humidity sensor, carrying case, (1) RH T C1 cable. Order as TCHECKW CS. The TotalCheck is a three in one moisture meter that offers scan and pin moisture modes and a thermo hygrometer that measures ambient temperature and relative humidity and calculates specific humidity and dew point. The TotalCheck is one of the best moisture meters Australia wide