$100 - $150, Oakton Instruments

WD-35820-60 Industrial Conductivity Cell, 25 ft Cable, Epoxy Body, Graphite Sensor, K=0.1. Requires Threaded Housing; Order Separately (Use with CON 100, CON 200, CON 1000, and RES 1000 controllers) by Oakton

Feature built-in temperature compensation

• Designed for continuous in-line monitoring
• Feature stripped ends for easy wiring

Choose from three different cell constants:

• K = 1.0 for midrange conductivity measurements.
• K = 10.0 for high conductivity measurements (near or above 20 mS)
• K = 0.1 for low conductivity measurements (near or below 20 µS)
• K = 0.01 for resistivity measurements (at or below 2 µS)

Install these rugged cells in a pipeline, or submerse in a tank.

Dimensions: 142 mm L x 12 mm dia. Shpg wt 0.5 lb.

WD-35607-53 Conductivity/TDS Cell, Glass Body, K=10 (Use with CON 100, 200, and 500 meters) by Oakton

Feature built-in temperature compensation

Each conductivity/TDS cell features a 3-ft cable and a two-band platinum sensor. Epoxy body cells have a temperature range of 0 to 80°C; glass and stainless steel body cells have a temperature range of 0 to 100°C.

• Epoxy, glass and stainless steel models available

Choose from three different cell constants.

• K = 1.0 for midrange conductivity measurements.
• K = 10.0 for high conductivity measurements (near or above 20 mS).
• K = 0.1 for low conductivity measurements (near or below 20 µS)

WD-35634-30 pHTestr 30 Portable Waterproof pH Tester by Oakton

Dual Display of pH and Temperature

High ±0.01 pH accuracy in a waterproof pocket-sized instrument! This unique Testr display pH and °C readings on a single large display. It also features a Double-junction electrode ideal for dirty water and solutions with heavy metals or other contaminants. Its waterproof, dustproof housing protects Testr from rugged field or plant environments.

• High ±0.01 pH accuracy
• Simultaneous pH and temperature (°C) display
• Suitable for most ASTM and EPA test procedures
• Double-junction electrode ideal for dirty water, heavy sulfides, tris buffers and organics
• Increased reference gel volume offers significantly longer electrode life
• Certifiable to IP67 standards waterproof and dustproof housing floats
• Replaceable sensor lets you reuse same meter body, saving you money
• Automatic temperature compensation
• Three point push-button calibration

WD-35808-88 Semi-dome, Single-junction, Epoxy-body, Polymer Gel-filled pH Electrode (Use with pH 300, pH 310, pH/CON 300, pH/CON 510 meters) by Oakton

Built-in temperature sensor lets you take ATC readings with a single probe

All-in-One Waterproof electrodes feature a built-in temperature sensor for taking readings with Automatic Temperature Compensation (ATC). Choose a single junction electrode for field, clean water, and general purpose applications. Choose a double junction electrode for most applications, including dirty water, heavy metals and organics applications.

Each electrode is 12 mm dia with a 3 ft cable.

• Includes a FREE electrode saver bottle to extend electrode life
• Feature a BNC connector for pH and a waterproof 6-pin connector for temperature

WD-35808-71 Single-junction, Epoxy-body, Gel-filled pH Electrode by Oakton

Built-in temperature sensor lets you take ATC readings with a single probe

All-in-One Waterproof electrodes feature a built-in temperature sensor for taking readings with Automatic Temperature Compensation (ATC). Choose a single junction electrode for field, clean water, and general purpose applications. Choose a double junction electrode for most applications, including dirty water, heavy metals and organics applications.

Each electrode is 12 mm dia with a 3 ft cable.

• Includes a FREE electrode saver bottle to extend electrode life
• Feature a BNC connector for pH and a waterproof 6-pin connector for temperature