Extech CL203 ExTab  Reagent tablets is a reagent tablets for use with ExStik Chlorine Meter with a flat surface electrode that allows On the Spot measurements whether the sample is liquid, semi-solid or solid

Extech 407510 Heavy Duty Dissolved Oxygen Meter with PC interface has a dual display of Oxygen concentration and Temperature plus an optional battery operated Datalogger module that stores over 8000 readings for later transfer to a PC

Extech 60120B Mini pH Electrode (10x120mm) is a general purpose, mini size glass bulb pH sensing electrode that includes 39" (1m) cable with BNC connector and storage solution bottle.  Extech 60120B has a glass pH sensing bulb surrounded by protective teeth  

Extech 601500 Standard pH Electrode (12 x 160mm) is a general purpose, standard size glass bulb pH sensing electrode that includes 39" (1m) cable with BNC connector and storage solution bottle.  Extech 601500 has a glass pH sensing bulb surrounded by protective teeth

Extech CL204 ExTab Chlorine Reagent tablets (100pk - 1000 tests)  is a reagent tablets for use with ExStik Chlorine Meter and also has a flat surface design that provides a rigid structure that is difficult to damage, but easy to clean

Extech CL205 ExStik Replacement Chlorine Electrode Module is a replacement flat surface electrode for ExStik Choline meter.  The ExStik Replacement  Chlorine electrode does not require a reference solution and also does not have a shelf life

Extech CL207 Chlorine Standard is a 1ppm standard for Chlorine meters calibration  with chlorine and pH electrodes having built-in temperature sensor  and a flat surface design that provides a rigid structure that is difficult to damage, but easy to clean

Extech DO600 Waterproof ExStik II Dissolved Oxygen Meter has an easy to replace screw-on membrane cap with optional extension cables that includes DO electrode, protective sensor cap, spare membrane cap, electrolyte, four 3V CR-2032 batteries, and 48" (1.2m) neckstrap. See image on right for DO600-K Kit information.

Extech DO600-K  Waterproof ExStik II Dissolved Oxygen Meter Kit includes DO electrode, protective sensor cap, spare membrane cap, electrolyte, four 3V CR-2032 batteries, and 48" (1.2m)neckstrap along with a memory stores up to 25 data sets with DO and Temperature reading

Extech DO603 Membrane Kit for ExStik Dissolved Oxygen Meter is a replacement screw-on membrane kit for DO sensor with a flat surface design that provides a rigid structure that is difficult to damage, but easy to clean

Extech DO605 ExStik Replacement Dissolved Oxygen Module is a replacement dissolved oxygen sensor for ExStik DO meter with flat surface design provides a rigid structure that is difficult to damage, but easy to clean.

Extech DO705 Dissolved Oxygen Electrode is a replacement DO Electrode for Dissolved Oxygen Meter and is  compatible with DO700 - 9-in-1 Portable Dissolved Oxygen Meter

Extech EC405 ExStik Replacement Conductivity Cell Module is a replacement 4-in-1 conductivity cell for ExStik Conductivity meters with a flat surface design provides a rigid structure that is difficult to damage, but easy to clean

Extech EC410 EC410 - ExStik Conductivity/TDS/Salinity Kit is a waterproof meter with high accuracy multi-range sensor that measures four parameters that includes plastic sample cup and iron cast weighted base allows for hands-free operation while holding up the meter during measurement stage 

Extech EC500 Waterproof ExStik II pH/Conductivity Meter measures 5 parameters including Conductivity, TDS, Salinity, pH, and Temperature using one electrode and has a combination of flat surface pH electrode with autoranging high accuracy Conductivity cell 

Extech EC505  ExStik Replacement pH Electrode/Conductivity Cell Module is a combination of flat surface pH electrode/conductivity cell for ExStik Conductivity meters with a flat surface design provides a rigid structure that is difficult to damage, but easy to clean

Extech EC510 Waterproof ExStik II pH/Conductivity Meter Kit measures 5 parameters including Conductivity, TDS,Salinity, pH, and Temperature using one electrode as well as a combination flat surface pH electrode with autoranging high accuracy Conductivity cell