Extech Water Quality Meters

Chlorine, Turbidity & Fluoride: links open in below window

Extech CL200: ExStik® Chlorine Meter;for Total Chlorine
Extech CL500: Free and Total Chlorine Meter up to 3.50ppm
Extech EX800: ExStik® 3-in-1 Chlorine, pH, Temperature Kit;
Extech EX900: ExStik®: 4-in-1 Chlorine, pH, ORP and Temperature Kit;
Extech FL700: Waterproof ExStik® II Fluoride Meter, from 0.1 to 9.99ppm
Extech TB400: Portable Turbidity Meter

Conductivity, TDS, Salinity

Extech 341350A-P: Oyster™ Series pH/Conductivity/TDS/ORP/Salinity Meter discontinued, replaced by the EC600
Extech DO610: ExStik® II DO/pH/Conductivity Kit
Extech DO700: Portable Dissolved Oxygen Meter, 9-in-1 Meter
Extech EC100: Conductivity/Temperature Meter; Waterproof meter
Extech EC150: Conductivity/TDS/Temperature Meter; Waterproof meter
Extech EC170: Salinity/Temperature Meter; Waterproof meter
Extech EC210: Compact Conductivity & TDS Meter with temperature
Extech EC400: ExStik® Conductivity, TDS, Salinity & temperature meter;
Extech EC410: ExStik® Conductivity/TDS/Salinity Kit
Extech EC500: Waterproof ExStik® II pH/Conductivity Meter; flat surface pH electrode
Extech EC510: Waterproof ExStik EC500 as kit with buffers
Extech EC600: Waterproof Conductivity Kit, 7-in-1 Meter
Extech EX800: ExStik® 3-in-1 Chlorine, pH, Temperature Kit
Extech EX900: ExStik®: 4-in-1 Chlorine, pH, ORP and Temperature Kit
Extech WQ510: Discontinued. Benchtop Water Quality Meter & Stirrer with Conductivity, TDS, Salinity, pH, mV, and Temperature measurements

Extech Dissolved Oxygen models: links open in below window

Extech 407510: Heavy Duty Dissolved Oxygen Meter with PC interface, Dual display of Oxygen concentration and Temperature
Extech DO210: Compact Dissolved Oxygen Meter, Measures Dissolved Oxygen, % Oxygen and Temperature in Water
Extech DO600: Waterproof ExStik® II Dissolved Oxygen Meter; with optional extension cables
Extech DO600-K: Waterproof ExStik® II Dissolved Oxygen Meter; Kit with DO600, replacement membrane kit, and 5m extension
DO610: ExStik® II DO/pH/Conductivity Kit; Measures Dissolved Oxygen, pH, Conductivity, TDS, Salinity and Temperature
Extech SDL150: Dissolved Oxygen Meter/Datalogger; Records data on an SD card in Excel® format

pH and ORP meters

Extech 407228:Heavy Duty pH/mV/Temperature Meter Kit: Discontinued, replaced by the SDL 100.
Extech DO700: Portable Dissolved Oxygen Meter; 9-in-1 Meter
Extech Oyster-10: Oyster™ Series pH/mV/Temperature Meter
Extech Oyster-15: Oyster™ Series pH/mV/Temperature Meter Kit
Extech Oyster-16: Oyster™ Series pH/mV/Temperature Meter Kit
Extech PH100: ExStik® pH Meter with flat surface electrode
Extech PH110: ExStik® Refillable pH Meter
Extech PH210: Compact pH/ORP/Temperature Meter
Extech PH220-C: Waterproof Palm pH Meter with Temperature
Extech PH220-S: Waterproof Palm pH Meter with Temperature
Extech PH300: Waterproof pH/mV/Temperature Kit
Extech PH50: Waterproof pH Pen
Extech PH60: Waterproof pH Pen with Temperature replaced by PH90
Extech PH90: Waterproof pH Meter
Extech RE300: ExStik® ORP Meter
Extech SDL100: pH/ORP/Temperature Datalogger