Dissolved Oxygen Meters | McMaster-Carr

Filter by

For Testing

Meter Type

For Use With

Battery Size

Chemistry Features

Depth

Digit Height

Height

Maximum Automatic Temperature Compensation (ATC)

Minimum Automatic Temperature Compensation (ATC)

Range Type

Width

Enclosure Rating

DFARS Compliance

RoHS Compliance

Maximum Conductivity

Cable Length

Maximum Total Dissolved Solids (TDS)

Minimum Conductivity

Conductivity Accuracy

Conductivity Resolution

Environment

Salinity Accuracy

Forward

How can we improve?

8 Products

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.

Import regulations restrict sales to the listed areas.

Meters
	Dissolved Oxygen									Replacement Sensors
Sensor Material	Range	Accuracy	Automatic Temperature Compensation (ATC) Range, °F	Environmental Rating	Specifications Met	Batteries Included	Cannot Be Sold To		Each		Each
For Use With Clean Liquids
Nonglass	0 to 20 ppm	0.4 ppm	32° F to 122°	IP57	CE Marked	Yes	Canada	00000000	0000000	00000000	0000000

Remote-Reading pH Meters with PC Output

Meter

LCD Display

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.

Import regulations restrict sales to the listed areas.

Meters
	pH								Replacement Sensors
Sensor Material	pH Range	Accuracy	Automatic Temperature Compensation (ATC) Range, °F	Specifications Met	Batteries Included	Cannot Be Sold To		Each		Each
For Use With Clean Liquids
Nonglass	-2 to 16 pH	±0.01 pH	-22° F to 260°	CE Marked	Yes	Canada	00000000	0000000	000000000	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. They cannot be sold to Canada due to import regulations.

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

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.

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

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

Conductivity		Salinity			Total Dissolved Solids (TDS)
Range	Accuracy	Range	Accuracy	Temp. Accuracy	Range	Accuracy	Automatic Temperature Compensation (ATC) Range, °F	Batteries Included	Cannot Be Sold To		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 ppt	±1%	±0.9° F	0 to 0.1 ppm	±1%	32° F to 212°	Yes	Canada	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.

These meters cannot be sold to Canada due to import regulations.

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

Meter

Conductivity		Resistivity		Salinity			Total Dissolved Solids (TDS)
Range	Accuracy	Range	Accuracy	Range	Accuracy	Temp. Accuracy	Range	Accuracy	Automatic Temperature Compensation (ATC) Range, °F	Batteries Included	Cannot Be Sold To		Each
For Use With Clean and Dirty Liquids
0 to 200 mS	±1.5%	0 to 20 megohms	±1.5%	0 to 100 ppt	±1.5%	±0.9° F	0 to 100 ppt	±0.1%	32° to 212°	Yes	Canada	00000000	0000000

Replacement Sensors

Replacement Sensor

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