Biosan II Wipes and the ready-to-use presentation exist for exactly that reason

Non-invasive scanning: does not mar or damage the surface of wood being tested

This is quite useful if you’re measuring in a hard to reach area

Fire Fix is the one to reach for first

FKN Hand Sani-Gel is 70% cosmetic grade alcohol

Injectidry Duct Ring Adapter (for Phoenix Guardian HEPA) Meters Moisture pH Distance Temperature Etc Biosan II Wipes and theInjectidry Duct Ring Adapter for Phoenix Guardian HEPA The newer model Phoenix Guardian no longer has a sheet metal collar for the intake. To adapt the ADP 5 to the newer style Guardian or the older style without the collar, place the separate ring provided on the face of the Guardian port (on top of the unit) and then place the ADP 5 onto it.