Cole-Parmer 98767-09 Traceable 4277 pH / ORP Meter with Probe – New Batteries

VWR 10-530-802 Digital pH/ORP Meter Traceable

Fisher Scientific Accumet Portable AP115 Laboratory pH/ORP Meter Working

Fisher Scientific Accumet AB150 Backlit Display pH/mV Benchtop Meter w/ probe

Hanna HI 2211 bench pH ORP meter

Cole Parmer 68000-49 = Traceable 6530 - Digital Barometer 500 to 1030 mbar

pH ORP replacement probe with BNC connector 300cm cable0-14 Q9 probe controller

Working VWR 10-530-802 Traceable Digital pH/ORP Meter