Clean Liquid Indicators | McMaster-Carr

Check the pH and conductivity of water and other clean liquids with one bench-top device. This meter has automatic temperature compensation that standardizes readings at 77° F to prevent inaccurate results in fluctuating temperatures. Use a Calibration Solution (not included) and the calibration knob to maintain accuracy.

For Testing Conductivity and pH

Image of Product. Front orientation. Chemistry Meters. Bench-Top Multifunction Chemistry Meters .

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

		Conductivity		pH
	Sensor Material	Range	Accuracy	Range, pH	Accuracy	ATC Range, ° F	Ht.	Wd.	Dp.	Batteries Included	Cannot Be Sold To		Each
For Use With Clean Liquids



		Glass	0 to 10 μS 0 to 100 μS 0 to 1,000 μS 0 to 10,000 μS	±2%	2 to 12	±0.2 pH	50 to 160	4"	3 1/2"	4 1/2"	Yes	Canada	00000000	0000000

Replacement Chemistry Sensors

For Testing		Each
pH, Conductivity	00000000	0000000

Easy-Read Bench-Top Multifunction Chemistry Meters

Don’t strain your eyes reading a scale—these bench-top meters indicate exact results on the digital display. For complete resistance to dust and protection from temporary submersion, these meters float and have a housing that meets NEMA 6 and IP67. They're for use with water and other clean 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, Resistivity, and Total Dissolved Solids (TDS)

Image of Product. Front orientation. Chemistry Meters. Easy-Read Bench-Top Multifunction Chemistry Meters .

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

		Conductivity		Resistivity		Total Dissolved Solids (TDS)
	Sensor Material	Range	Accuracy	Range	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 Liquids



		Plastic	0 to 9,999 μS 10 to 200 S	±1%	10 kohm to 30 Mohm	±1%	0 to 9,999 ppm 10 to 200 ppt	±1%	32 to 160	IP67, NEMA 6	CE Marked	2 1/2"	2 3/4"	7 3/4"	Yes	Canada	LCD	000000	0000000

For Testing Conductivity, Oxidation Reduction Potential (ORP), pH, Resistivity, and Total Dissolved Solids (TDS)

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

		Conductivity		Resistivity		Oxidation Reduction Potential (ORP)		pH		Total Dissolved Solids (TDS)
	Sensor Material	Range	Accuracy	Range	Accuracy	Range, mV	Accuracy	Range, pH	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 Liquids



		Glass	0 to 9,999 μS 10 to 200 mS	±1%	10 kohm to 30 Mohm	±1%	-999 to 999	±1 mV	0 to 14	±0.01 pH	0 to 9,999 ppm 10 to 200 ppt	±1%	32 to 160	IP67, NEMA 6	CE Marked	2 1/2"	2 3/4"	7 3/4"	Yes	Canada	LCD	000000	000000000

Replacement Chemistry Sensors

For Testing		Each
Oxidation Reduction Potential (ORP), pH	000000	0000000

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 Chemistry Sensors

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

For Testing Oxidation Reduction Potential (ORP), pH, and Temperature

Image of Product. Front orientation. Chemistry Meters. Remote-Reading Multifunction Chemistry Meters , For Testing Oxidation Reduction Potential (ORP).

Oxidation reduction potential (ORP), pH, and temperature meters take three measurements. ORP measures the amount of dissolved oxygen in liquids. It determines how efficiently a liquid breaks down contaminants.

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

	Oxidation Reduction Potential (ORP)		pH
	Range, mV	Accuracy	Range, pH	Accuracy	Temp. 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



		-1,000 to 1,000	±0.2%	0 to 14	±0.01 pH	±0.9° F	32 to 212	IP57	CE Marked	7 1/2"	3 9/16"	1 5/16"	Yes	Canada	LCD	0000000	0000000

Replacement Chemistry Sensors

For Testing		Each
Oxidation Reduction Potential (ORP)	0000000	0000000
pH	0000000	000000

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

For Testing		Each
Conductivity, Resistivity, Salinity, Temperature, Total Dissolved Solids (TDS)	00000000	0000000

Remote-Reading pH Meters with PC Output

Transmit pH readings to a PC for analysis. These meters have a sensor on a 6-ft. cable for taking remote readings of water and other clean liquids. They have automatic temperature compensation that standardizes readings at 77° F to prevent inaccurate readings in fluctuating temperatures. Use the included calibration solution and calibration button to maintain accuracy.

For Testing pH and Temperature


LCD Display

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

		pH
	Sensor Material	Range, pH	Accuracy	ATC Range, ° F	Certification	Ht.	Wd.	Dp.	Batteries Included	Cannot Be Sold To	Display Type		Each
For Use With Clean Liquids



		Plastic	-2 to 16	±0.01 pH	-22 to 260	CE Marked	6 5/16"	3 3/16"	1 5/8"	Yes	Canada	LCD	00000000	0000000

Replacement Chemistry Sensors

	Each
000000000	0000000

Water-Resistant Conductivity Meters

Don’t worry about dropping this meter in your tank when checking electrical conductivity—it floats and has a housing that meets IP67 for complete resistance to dust and protection from temporary submersion. For use with water, hydroponic solutions, and other clean liquids, this meter measures a liquid's conductivity to indicate the concentration of salts, nutrients, chemicals, and other substances. It displays temperature in addition to conductivity. 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

Image of Product. Front orientation. Chemistry Meters. Water-Resistant Conductivity Meters.

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

		Conductivity
	Sensor Material	Range	Accuracy	ATC Range, ° F	Enclosure Rating	Certification	Ht.	Wd.	Dp.	Batteries Included	Cannot Be Sold To	Display Type		Each
For Use With Clean Liquids



		304 Stainless Steel	0 μS to 1,999 μS	±1.5%	32 to 122	IP67	CE Marked	7 3/8"	1 7/8"	1 1/2"	Yes	Canada	LCD	00000000	0000000

Replacement Chemistry Sensors

	Each
00000000	000000

Water-Resistant Dissolved Oxygen Meters

Check the oxygen levels of water and other clean liquids in harsh field conditions. This meter has a housing that meets IP57 for good resistance to dust and protection from temporary submersion. It has automatic temperature compensation that standardizes readings at 77° F to prevent inaccurate results in fluctuating temperatures. Use distilled water and the calibration button to maintain accuracy.

For Testing Dissolved Oxygen

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

		Dissolved Oxygen, ppm
	Sensor Material	Range	Accuracy	ATC Range, ° F	Enclosure Rating	Certification	Ht.	Wd.	Dp.	Batteries Included	Cannot Be Sold To	Display Type		Each
For Use With Clean Liquids



		Plastic	0 to 20	0.4	32 to 122	IP57	CE Marked	6 7/8"	1 3/8"	1 5/8"	Yes	Canada	LCD	00000000	0000000

Replacement Chemistry Sensors

	Each
00000000	0000000

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 Chlorine, Oxidation Reduction Potential (ORP), and pH

Chlorine, oxidation reduction potential (ORP), and pH meters come with three sensors that each take one chemistry measurement.

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

		Oxidation Reduction Potential (ORP)		pH
	Sensor Material	Range, mV	Accuracy	Range, pH	Accuracy	ATC Range, ° F	Enclosure Rating	Certification	Ht.	Batteries Included	Cannot Be Sold To	Display Type		Each
For Use With Clean Liquids



		Glass	-999 to 999	±1 mV	0 to 14	±0.01 pH	23 to 194	IP57	CE Marked	6 7/8"	Yes	Canada	LCD	0000000	0000000

Replacement Chemistry Sensors

For Testing		Each
Oxidation Reduction Potential (ORP)	0000000	000000
pH	0000000	00000
Chlorine	0000000	000000

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 Chemistry Sensors

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

Water-Resistant pH Meters

Check pH in harsh field conditions. These floating meters that have a housing that meets IP67 for complete resistance to dust and protection from temporary submersion. Automatic temperature compensation standardizes readings at 77° F to prevent inaccurate results in fluctuating temperatures. Use a calibration solution and the calibration button to maintain accuracy. They do not include Calibration Solution.

For Testing pH

For Use With Clean Liquids—Meter for clean liquids is commonly used in pools and hydroponic solutions.

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

		pH
	Sensor Material	Range, pH	Accuracy	ATC Range, ° F	Enclosure Rating	Certification	Ht.	Wd.	Dp.	Batteries Included	Cannot Be Sold To	Display Type		Each
For Use With Clean Liquids



		Glass	0 to 14	±0.1 pH	32 to 122	IP67	CE Marked	6 1/2"	1 1/2"	3/4"	Yes	Canada	LCD	00000000	0000000

Water-Resistant TDS Meters

Since these meters float and have a housing that meets IP67, they won’t be damaged by temporary submersion and have complete resistance to dust. They detect total dissolved solids (TDS) in water, hydroponic solutions, and other clean liquids to determine contaminant levels. 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 Total Dissolved Solids (TDS)

Image of Product. Front orientation. Chemistry Meters. Water-Resistant TDS Meters.

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

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



		304 Stainless Steel	0 ppm to 1,000 ppm	±1.5%	32 to 122	IP67	CE Marked	7 3/8"	1 7/8"	1 1/2"	Yes	Canada	LCD	00000000	0000000

Replacement Chemistry Sensors