Pipettes. Box/bag of 500.
Safely and conveniently transfers fluids to/from specimen cups/microtubes/meters.
Tip for using pipettes for pH saliva measures: Keep mouth closed to accumulate saliva, then place tip of pipette just past lips and suction up the saliva. (This keeps the air away so it does not off-gas the saliva’s CO2 giving you an artificially high pH reading.) Transfer saliva to your meter measuring electrode and read.