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Leak-Detecting Dye for Water Systems






Easy-to-see colors enable you to visually inspect for leaks without ultraviolet light.
One gallon of water occupies 0.1337 cubic ft. Calculate the number of gallons a tank holds by dividing the tank volume by 0.1337.
Fluorescent dye can be enhanced with a UV flashlight.
Tablets are easy to use for small volumes of water, such as toilets and septic systems. They dissolve in five minutes. Tablets that come in a packet include instructions for detecting a toilet leak.
Liquid is a good choice for larger volumes of water, such as sewers. It disperses faster than tablets and powder.
Powder is the best choice for the largest volumes of water, such as ponds, piping systems in power plants, and cooling towers.
Container | |||||||||
---|---|---|---|---|---|---|---|---|---|
Color | Max. Amount of Water Treated, gal. | No. of Tablets | Size | Net Weight | Type | Specifications Met | Includes | Each | |
Tablets | |||||||||
Blue | 4 | 2 | __ | __ | Packet | NSF/ANSI 60 | Instructions | 0000000 | 00000 |
Blue | 4,000 | 200 | __ | __ | Jar | NSF/ANSI 60 | __ | 0000000 | 00000 |
Fluorescent Orange | 7,000 | 200 | __ | __ | Jar | NSF/ANSI 60 | __ | 0000000 | 00000 |
Fluorescent Red | 12,000 | 200 | __ | __ | Jar | NSF/ANSI 60 | __ | 0000000 | 00000 |
Fluorescent Yellow/Green | 12,000 | 200 | __ | __ | Jar | NSF/ANSI 60 | __ | 0000000 | 00000 |
Liquid | |||||||||
Blue | 12,500 | __ | 1 pt. | __ | Bottle | NSF/ANSI 60 | __ | 0000000 | 00000 |
Blue | 100,000 | __ | 1 gal. | __ | Jug | NSF/ANSI 60 | __ | 0000000 | 00000 |
Fluorescent Orange | 4,000 | __ | 1 pt. | __ | Bottle | NSF/ANSI 60 | __ | 0000000 | 00000 |
Fluorescent Orange | 32,000 | __ | 1 gal. | __ | Jug | NSF/ANSI 60 | __ | 0000000 | 00000 |
Fluorescent Red | 3,125 | __ | 1 pt. | __ | Bottle | NSF/ANSI 60 | __ | 0000000 | 00000 |
Fluorescent Red | 25,000 | __ | 1 gal. | __ | Jug | NSF/ANSI 60 | __ | 0000000 | 000000 |
Fluorescent Yellow/Green | 12,500 | __ | 1 pt. | __ | Bottle | NSF/ANSI 60 | __ | 0000000 | 00000 |
Fluorescent Yellow/Green | 100,000 | __ | 1 gal. | __ | Jug | NSF/ANSI 60 | __ | 0000000 | 00000 |
Powder | |||||||||
Fluorescent Red | 60,000 | __ | __ | 1 lbs. | Jar | NSF/ANSI 60 | __ | 0000000 | 000000 |
Fluorescent Yellow/Green | 120,000 | __ | __ | 1 lbs. | Jar | NSF/ANSI 60 | __ | 0000000 | 000000 |
UV Mini Flashlight for Fluorescent Dye | 000000 | Each | 000000 |
Leak-Detecting Dye for Hydraulic Systems
Easy-to-see colors enable you to visually inspect for leaks without ultraviolet light.
Use 1 fl. oz. of dye for every 50 gallons of oil, solvent, wax, or other industrial fluid you're inspecting.
Fluorescent red dye can be enhanced with a UV flashlight.
Ultrasonic Gas Leak Detectors
This detector converts ultrasonic waves to an audible sound so you can find leaks. Unlike typical leak detectors, this unit doesn’t rely only on the presence of a gas to work, making it suitable for a wider range of applications. In addition to gas leaks, it identifies ultrasonic sound caused by failing solenoids, valves, and bearings.
For systems under 10 psi, use the optional ultrasonic sound generator.
Import regulations restrict sales to the listed areas.
Gas Leak Detectors for Hard-to-Reach Areas

Identify a variety of small leaks quickly and access hard-to-reach areas with the flexible probe. An audible signal increases in intensity the closer you get to the leak. Intrinsically safe for Class I, Divisions I and 2, Groups A, B, C, and D hazardous locations.
Detection Trigger Point, ppm | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Methane (Natural Gas) | Propane | Hydrogen | Butane | Acetone | Methanol | Ammonia | Gasoline | Chlorine | Acetylene | Ethane | Ethylene | Hydrogen Sulfide | Batteries Included | Container Type | Each | |
5 | 5 | 5 | 5 | 50 | 50 | 20 | 1 | 1 | 50 | 5 | 500 | 5 | Yes | Plastic Carrying Case | 0000000 | 0000000 |
Refrigerant Leak Detectors for Hard-to-Reach Areas
Detect halogenated refrigerants such as HFCs, CFCs, and HCFCs. Access hard-to-reach areas with the flexible probe. This unit can detect leaks as small as 0.1 oz. per year in air conditioning and refrigeration systems. An audible signal increases in intensity as you approach the leak.

Gas Type Detected | Probe Lg. | Batteries Included | Container Type | Specifications Met | Each | |
Hydrofluorocarbons (HFCs), Chlorofluorocarbons (CFCs), Hydrochlorofluorocarbons (HCFCs), R-22 (Freon) Refrigerant, R-134A Refrigerant, R-410A Refrigerant | 14" | Yes | Plastic Carrying Case | UL Recognized Component, CE Marked, SAE J2791, SAE J2913 | 0000000 | 0000000 |
Economy Gas Leak Detectors
Check for leaks in pipes, valves, storage tanks, and other gas system components. Detector signals with both a red light and a continuous beeping sound.
Digital Radiation Detectors


Detects lower levels of radiation than our standard detector. Measurements are displayed on an easy-to-read LCD. The unit has a protective rubber casing. A flashing red light with audio beep indicates the presence of alpha, beta, gamma, and X-ray radiation.
Use this detector alone to measure radiation in the air, or use it with the optional wipe test plate and sample collection wipes (sold separately) to measure radiation on surfaces. For surface testing, use a wipe on a wet or dry surface, place the wipe in the wipe test plate, and slide the plate onto the detector.
Radiation Detectors

Detect alpha, beta, gamma, and X-ray radiation. A flashing red light with audio beep indicates the presence of radiation. This unit has a scale to show radiation detected in the air.
Scale | Batteries Included | Battery Size | No. of Batteries Required | Each | |
CPM, mR/hr, µSv/hr | No | 9V | 1 | 0000000 | 0000000 |
Portable Multi-Gas Detectors

When this detector senses high levels of combustible and toxic gases, it alerts you with an audible alarm, warning light, and vibrating alarm. You can adjust the alarm trigger points to suit your environment. There is also a motion sensor that sounds an alarm if the user becomes disabled.
A calibration check must be performed on the detector before each use to verify that it is working properly. The check requires a regulator and cylinder (sold separately).
Note: LEL is lower explosive limit.
Detects (Measuring Range) | Volume | Temperature Range, °F | Batteries Included | Environmental Rating | Each | |
Acetone, Butane, Hydrogen, Methane, Pentane, Propane, Toluene (0-100% LEL), Oxygen (0-30% Vol.), Carbon Monoxide (0-1,999 ppm), Hydrogen Sulfide (0-200 ppm) | 95 dBA @ 30 cm. | -40° to 140° | Yes | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEC Zone 0 Groups IIC, IIB, IIA IP68 | 00000000 | 000000000 |
Portable Multi-Gas Detectors with Probe

Use the probe to test the air in a hazardous area before entering. Great for confined spaces. This detector alerts you with an audible alarm, warning light, and vibrating alarm in the presence of combustible and toxic gases. You can adjust the alarm trigger points to suit your environment. There is also a motion sensor that sounds an alarm if the user becomes disabled.
A calibration check must be performed on the detector before each use to verify that it is working properly. The check requires a regulator and cylinder (sold separately).
Note: LEL is lower explosive limit.
Detects (Measuring Range) | Volume | Temperature Range, °F | Batteries Included | Includes | Tube Lg., ft. | Environmental Rating | Each | |
Acetone, Butane, Hydrogen, Methane, Pentane, Propane, Toluene (0-100% LEL), Oxygen (0-30% Vol.), Carbon Monoxide (0-1,999 ppm), Hydrogen Sulfide (0-200 ppm) | 95 dBA @ 30 cm. | -40° to 140° | Yes | Sampling Probe, Tubing Assembly, Rechargeable Lithium Ion Battery for Probe | 25 | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEC Zone 0 Groups IIC, IIB, IIA IP68 | 00000000 | 000000000 |
Surface-Mount Multi-Gas Detectors

An audible alarm and warning light alert you to the presence of propane, methane, hydrogen, and carbon monoxide. This detector has a relay for connection to auxiliary alarm systems. A programmable timer allows you to set whether the relay alarm is triggered immediately, or after 4 or 8 minutes of continuous gas exposure. The reset button suspends the alarm and restarts the cycle for 5 to 8 minutes in case of false alarm.
Import regulations restrict sales to the listed areas.
Detects (Trigger Point) , ppm | Volume | Temperature Range, ° F | Ht. | Wd. | Dp. | Voltage | Cord Lg., ft. | Fasteners Included | Mounting Hole Dia. | Cannot Be Sold To | Each | |
Propane (420); Methane (5,000); Hydrogen (200); Carbon Monoxide (150) | 80 dB @ 10 ft. | -20° to 120° | 6 3/4" | 3 1/4" | 1 3/4" | 120V AC | 6 | No | 3/16" | Canada | 0000000 | 0000000 |
Early-Warning Surface-Mount Hydrogen Detectors

This detector triggers a “caution” alert when a small amount of hydrogen is detected and a second “danger” alert if levels continue to rise. When hydrogen concentration reaches 1% by volume, a yellow warning light illuminates and the first relay closes to trigger a remote exhaust fan and/or alarm. When hydrogen reaches 2%, a red warning light illuminates, an alarm sounds, and the second relay closes to activate another remote exhaust fan and/or alarm.
Use the optional remote and cable to keep an eye on the detector’s alert status from a distance. Remote has a buzzer and the same yellow and red warning lights as the detector.
Trigger Point, % Vol. | Volume | Temperature Range, ° F | Ht. | Wd. | Dp. | Electrical Connection | Voltage | Fasteners Included | Mounting Hole Dia. | Each | |
1; 2 | 60 dB @ 10 ft. | 14° to 104° | 7" | 4 3/4" | 2 1/2" | Screw Terminals | 120V AC, 240V AC | No | 3/16" | 00000000 | 0000000 |
Surface-Mount Hydrogen Detectors

An audible alarm and warning light alert you to the presence of hydrogen. This detector has a relay for connection to auxiliary alarm systems. A programmable timer allows you to set whether the relay alarm is triggered immediately, or after 4 or 8 minutes of continuous gas exposure. The reset button suspends the alarm and restarts the cycle for 5 to 8 minutes in case of false alarm.
Import regulations restrict sales to the listed areas.
Trigger Point, ppm | Volume | Temperature Range, ° F | Ht. | Wd. | Dp. | Voltage | Cord Lg., ft. | Fasteners Included | Mounting Hole Dia. | Cannot Be Sold To | Each | |
8,000 | 80 dB @ 10 ft. | -20° to 120° | 6 3/4" | 3 1/4" | 1 3/4" | 120V AC | 6 | No | 3/16" | Canada | 0000000 | 0000000 |
Hydrogen Sulfide Detectors

When these detectors sense high levels of hydrogen sulfide, they alert you with an audible alarm, warning light, and vibrating alarm. You can adjust the alarm trigger point to suit your environment.
A calibration check must be performed on the detector before each use to verify that it is working properly. The check requires a regulator, tubing, and cylinder (sold separately).
The detector with a nonreplaceable battery should be thrown away at the end of its two-year lifespan.
Measuring Range, ppm | Volume | Temperature Range, °F | Ht. | Wd. | Dp. | Batteries Included | Environmental Rating | Each | |
Detectors with Nonreplaceable Battery | |||||||||
---|---|---|---|---|---|---|---|---|---|
0-100 | 95 dBA @ 30 cm. | -4° to 122° | 3 1/2" | 2" | 1" | Yes | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Group G NEC Zone 0 Groups IIC, IIB, IIA IEC Zone 1 Groups IIC, IIB, IIA IP67 | 00000000 | 0000000 |
Detectors with Replaceable Battery | |||||||||
0-200 | 95 dBA @ 30 cm. | 14° to 104° | 3 1/2" | 2" | 1" | Yes | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 IEC Zone 0 Groups IIC, IIB, IIA IP67 | 00000000 | 000000 |
Portable Carbon Monoxide Detectors

When these detectors sense high levels of carbon monoxide, they alert you with an audible alarm, warning light, and vibrating alarm. You can adjust the alarm trigger point to suit your environment.
A calibration check must be performed on the detector before each use to verify that it is working properly. The check requires a regulator, tubing, and cylinder (sold separately).
The detector with a nonreplaceable battery should be thrown away at the end of its two-year lifespan.
Measuring Range, ppm | Volume | Temperature Range, °F | Ht. | Wd. | Dp. | Batteries Included | Environmental Rating | Each | |
Detectors with Nonreplaceable Battery | |||||||||
---|---|---|---|---|---|---|---|---|---|
0-500 | 95 dBA @ 30 cm. | -4° to 122° | 3 1/2" | 2" | 1" | Yes | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Group G NEC Zone 0 Groups IIC, IIB, IIA IEC Zone 1 Groups IIC, IIB, IIA IP67 | 00000000 | 0000000 |
Detectors with Replaceable Battery | |||||||||
0-2,000 | 95 dBA @ 30 cm. | 14° to 104° | 3 1/2" | 2" | 1" | Yes | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 IEC Zone 0 Groups IIC, IIB, IIA IP67 | 00000000 | 000000 |
Oxygen Detectors

When your work area has too much or too little oxygen, these detectors alert you with an audible alarm, warning light, and vibrating alarm. You can adjust the high and low alarm trigger points to suit your environment.
A calibration check must be performed on the detector before each use to verify that it is working properly. The check can be performed with the press of a button.
The detector with a nonreplaceable battery should be thrown away at the end of its two-year lifespan.
Measuring Range, % Vol. | Volume | Ht. | Wd. | Dp. | Temperature Range, °F | Batteries Included | Battery Chemistry | Environmental Rating | Each | |
Detectors with Nonreplaceable Battery | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
0-25 | 95 dBA @ 30 cm. | 3 1/2" | 2" | 1" | -4° to 122° | Yes | Lithium | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Group G NEC Zone 0 Groups IIC, IIB, IIA IEC Zone 1 Groups IIC, IIB, IIA IP67 | 00000000 | 0000000 |
Detectors with Replaceable Battery | ||||||||||
0-25 | 95 dBA @ 30 cm. | 3 1/2" | 2" | 1" | -4° to 122° | Yes | Lithium | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Group G NEC Zone 0 Groups IIC, IIB, IIA IEC Zone 0 Groups IIC, IIB, IIA | 00000000 | 000000 |
Batteries (Pkg. of 1) | 0000000 | Pkg. | 000000 |
Propane Detectors

An audible alarm and warning light alert you to the presence of propane. This detector has a relay for connection to auxiliary alarm systems. A programmable timer allows you to set whether the relay alarm is triggered immediately, or after 4 or 8 minutes of continuous gas exposure. The reset button suspends the alarm and restarts the cycle for 5 to 8 minutes in case of false alarm.
Import regulations restrict sales to the listed areas.
Trigger Point, ppm | Volume | Temperature Range, ° F | Ht. | Wd. | Dp. | Voltage | Cord Lg., ft. | Fasteners Included | Mounting Hole Dia. | Cannot Be Sold To | Each | |
4,200 | 80 dB @ 10 ft. | -20° to 120° | 6 3/4" | 3 1/4" | 1 3/4" | 120V AC | 6 | No | 3/16" | Canada | 0000000 | 0000000 |
Methane Detectors

An audible alarm and warning light alert you to the presence of methane. This detector has a relay for connection to auxiliary alarm systems. A programmable timer allows you to set whether the relay alarm is triggered immediately, or after 4 or 8 minutes of continuous gas exposure. The reset button suspends the alarm and restarts the cycle for 5 to 8 minutes in case of false alarm.
Import regulations restrict sales to the listed areas.
Trigger Point, ppm | Volume | Temperature Range, ° F | Ht. | Wd. | Dp. | Voltage | Cord Lg., ft. | Fasteners Included | Mounting Hole Dia. | Cannot Be Sold To | Each | |
10,000 | 80 dB @ 10 ft. | -20° to 120° | 6 3/4" | 3 1/4" | 1 3/4" | 120V AC | 6 | No | 3/16" | Canada | 0000000 | 0000000 |
Wi-Fi Enabled Water Overflow and Freeze Detectors
Keep an eye on leaks, overflow, and temperature changes near your equipment, even when you’re offsite. These detectors connect to your Wi-Fi to send alerts about moisture, temperature, and humidity to your smartphone or tablet. Place them near tanks and tubs to watch for overflow, or near sump pumps and pipe lines to monitor temperatures and prevent frozen pipes. When water touches one of the sensors on the detector, a buzzer also goes off, alerting anyone nearby. Rated IP44, these detectors are protected from objects larger than 1mm, such as wires, and from water splashing in any direction.
Download an app onto your smart device to program temperature and humidity ranges and set up alerts. You can also create reports that show changes in temperature and humidity over time.
To extend the area they monitor, these detectors come with a detachable cable sensor that senses moisture along its entire surface. Swap in replacement cable sensors for worn sensors, or link several together to wrap around large equipment or trace the path of a pipe. Extend them up to 500 feet from detectors.


Volume | Sound Pattern | Wd. | Ht. | Dp. | Cord Lg., ft. | Material | Batteries Included | Sensor Location | Operating System Compatibility | Includes | Each | |
100 dBA @ 1 ft. | Continuous | 3" | 2" | 1 1/16" | 5 | Plastic | Yes | Bottom | Android 9.0 or Later, iOS 14 or Later | Detachable Cable Sensor, Mounting Screws | 0000000 | 000000 |

Lg., ft. | Each | |
5 | 0000000 | 000000 |
Water Overflow Buzzers

When water contacts the sensor, it triggers a buzzer to alert personnel to a leak or overflow hazard. Frequently used to monitor sinks, pipe lines, tubs, and sump pumps.
Volume | Sound Pattern | Ht. | Wd. | Dp. | Cord Lg., ft. | Material | Batteries Included | No. of Batteries Required | Battery Size | Includes | Each | |
96 dB @ 1 ft. | Pulse | 3 1/4" | 2 1/4" | 7/8" | 5 | Plastic | No | 3 | AAA | Hook and Loop Mounting Tape | 0000000 | 000000 |