Portable Meters
MW102
Inexpensive pH/ORP/Temperature Meters
MW301
Conductivity & TDS Meters
MW401
Conductivity & TDS Meters
MW500
Inexpensive pH/ORP/Temperature Meters
MW600
Portable Dissolved Oxygen Meter
MW700  MW700-WP
Inexpensive LUX Portable Meters
MW802
Portable pH/EC/TDS Meters
Mi105
Portable pH/Temperature Meter
Mi106
Portable pH/ORP/Temperature Meter
Mi306
Auto. & Logging EC/TDS/NaCl/Temp. Meter]
Mi605
Portable D.O. Meter for Field Applications
Mi805
Portable pH/EC/TDS/Temperature Meters
Mi806
Portable pH/EC/TDS/Temperature Meters

Jenco Portable Meters
6810
pH/mV/temperature Meter
3840M
EC/TDS Meter
7810
Water Resistant J, K, T Thermocouple Meter
6010M
pH/mV/temperature Meter
6230M
pH/mV Meter
3010M
conductivity/salinity/TDS Meter
3250M
Conductivity, TDS, Salinity, Temperature Portable Meter
6360
pH/mV & EC/temperature Meter
9010M-9020M
DO Meters
9030M
Optical DO Handheld Portable Meter
608
pH Calibration and manual Temperature control

New Jenco Portable Meters
6011M
Basis Portable 6011M pH / ORP / Temperature
9011M
Basis Portable 9011M DO / DO% Saturation / Temperature