Salinity Probes | McMaster-Carr

Filter by

For Testing

Total Dissolved Solids (TDS)

Maximum Conductivity

For Use With

Minimum Conductivity

Meter Type

Maximum Salinity

Conductivity Accuracy

±1%

±1.5%

±2%

Maximum Total Dissolved Solids (TDS)

Conductivity Resolution

Chemistry Features

Automatic Temperature Compensation

Data Hold Function

Data Memory

Low-Battery Indicator

Minimum Total Dissolved Solids (TDS)

Conductivity Range

Enclosure Rating

Environment

Minimum Salinity

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

Salinity Accuracy

Total Dissolved Solids (TDS) Accuracy

Battery Size

Digit Height

Total Dissolved Solids (TDS) Resolution

Depth

Height

6 Products

Water-Resistant Multifunction Chemistry Meters

Test different water-chemistry measurements in dirty, wet conditions. Often used in pools and spas, all of these meters are for use with clean liquids. They meet IP57 for protection from dust and temporary submersion in liquids. Automatic temperature compensation standardizes readings at 77° F to prevent inaccurate results in fluctuating temperatures. Use a calibration solution (not included) and the calibration button to maintain accuracy.

For Testing Conductivity, Salinity, and Total Dissolved Solids (TDS)

Conductivity, salinity, and total dissolved solids (TDS) meters come with one sensor that takes all three chemistry measurements. You can also use them in aquaculture solutions, wastewater, and other dirty liquids.

Cannot Be Sold To—Import regulations restrict sales to the listed areas.

		Conductivity		Salinity		Total Dissolved Solids (TDS)
	Sensor Material	Range	Accuracy	Range, ppm	Accuracy	Range	Accuracy	ATC Range, ° F	Enclosure Rating	Certification	Ht.	Wd.	Dp.	Batteries Included	Cannot Be Sold To	Display Type		Each
For Use With Clean and Dirty Liquids



		Plastic	0 to 199.9 μS 200 to 1,999 μS 2 to 19.99 mS	±2%	0 to 99.9	±2%	0 to 99.9 ppm 100 to 999 ppm 1 to 9.99 ppt	±2%	32 to 149	IP57	CE Marked	6 3/4"	1 3/8"	1 5/8"	Yes	Canada	LCD	00000000	0000000

Replacement Sensors

For Testing		Each
Conductivity, Salinity, Total Dissolved Solids (TDS)	00000000	000000

Remote-Reading Multifunction Chemistry Meters

Take multiple water-chemistry and temperature measurements in hard-to-reach places from up to 3 feet away. Often used in tap water and wastewater, these meters work in both clean and dirty liquids. Automatic temperature compensation standardizes readings to 77° F to prevent inaccurate results in changing temperatures. The data hold function freezes the current reading on the display. For easy viewing, temperature and chemistry measurements appear on the same screen. These meters are IP57 rated, so they resist dust and withstand temporary submersion.

To maintain their accuracy, all have a calibration button and some also come with calibration solutions.

For Testing Conductivity, Salinity, Temperature, and Total Dissolved Solids (TDS)

Image of Product. Front orientation. Chemistry Meters. Remote-Reading Multifunction Chemistry Meters , For Testing Total Dissolved Solids (TDS).

Conductivity, salinity, temperature, and total dissolved solids (TDS) meters take four measurements at once. Conductivity measures the concentration of salts, nutrients, chemicals, and other substances. Salinity measures the amount of dissolved salts. TDS determines the contaminant levels. The stainless steel sensor is durable and resists breaking.

Cannot Be Sold to Canada—Meters cannot be sold to Canada due to import regulations.

	Conductivity		Salinity			Total Dissolved Solids (TDS)
	Range	Accuracy	Range, ppt	Accuracy	Temp. Accuracy	Range	Accuracy	ATC Range, ° F	Enclosure Rating	Certification	Ht.	Wd.	Dp.	Batteries Included	Cannot Be Sold To	Display Type		Each
For Use With Clean and Dirty Liquids



		0 to 19.99 μS 20 to 199.9 μS 200 to 1,999 μS 2 to 19.99 mS 20 to 199.9 mS	±1% ±1% ±1% ±1% ±1%	0 to 100	±1%	±0.9° F	0 ppm to 0.1 ppm	±1%	32 to 212	IP57	CE Marked	7 1/2"	3 9/16"	1 5/16"	Yes	Canada	LCD	0000000	0000000

Replacement Sensors

For Testing		Each
Conductivity, Salinity, Temperature, Total Dissolved Solids (TDS)	0000000	0000000

Remote-Reading Multifunction Chemistry Meters with PC Output

Test temperature, chemical concentration, contamination, and salt levels in liquid from up to 6 ft. away, then send the results to your computer for analysis. These meters include a USB cable that transfers up to 1,000 readings. Often used to test water quality, they work on both clean and dirty liquids—from tap water to wastewater. Conductivity tests measure the concentration of salts, nutrients, chemicals, and other substances. Total dissolved solids (TDS) tests report contaminant levels. Salinity tests determine the salt levels in liquid. The sensor is made of stainless steel, so it’s durable and resists breaking. IP67 rated, these meters are dust tight and withstand temporary submersion.

To prevent inaccurate results from changing temperatures, these meters automatically standardize temperature readings at 77° F. Temperature readings appear on screen with other measurements, so you won’t have to scroll through multiple screens. A data hold function freezes the current reading on the display.

To maintain accuracy of the meters, they come with calibration solutions and have a calibration button.

For Testing Conductivity, Resistivity, Salinity, Temperature, and Total Dissolved Solids (TDS)

Cannot Be Sold to Canada—Meters cannot be sold to Canada due to import regulations.

	Conductivity		Resistivity		Salinity			Total Dissolved Solids (TDS)
	Range	Accuracy	Range, Mohm	Accuracy	Range, ppt	Accuracy	Temp. Accuracy	Range	Accuracy	ATC Range, ° F	Enclosure Rating	Certification	Ht.	Wd.	Dp.	Batteries Included	Cannot Be Sold To	Display Type		Each
For Use With Clean and Dirty Liquids



		0 mS to 200 mS	±1.5%	0 to 20	±1.5%	0 to 100	±1.5%	±0.9° F	0 ppt to 100 ppt	±0.1%	32 to 212	IP67	CE Marked	6 5/16"	3 3/16"	1 5/8"	Yes	Canada	LCD	00000000	0000000

Replacement Sensors for Chemistry Meters