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New and improved! Prevent small leaks from causing big problems with a Restek leak detector.
If your Restek electronic leak detector needs service or repair, send a completed Health and Safety form and SRV-GC Accessories form to the email address listed at the top of each form. Failure to provide all required information may lead to significant processing delays. Once we have received both completed forms, we will provide authorization and instructions for returning your unit; do not send any equipment back to Restek prior to receiving authorization. Leak detector service (cat.# 22655-R or 28500-S) includes inspection, battery replacement (if necessary) and testing of the unit.
Backed by a one-year warranty, the Restek leak detector is the industry standard for performance and affordability in handheld leak detectors.
Leak Detector Specifications
Detectable Gases: Helium, nitrogen, argon, carbon dioxide, hydrogen*
Battery: Rechargeable nickel-metal hydride (NiMH) internal battery pack (12 hours normal operation)
Ambient Temperature: 50–98.6 °F (10–37 °C)
Humidity Range: 0–97%
Warranty: One year
Certification/Compliance: CE (EU, Korea, Japan, Australia); CSA/UL tested, not listed; WEEE; CEC; China RoHS 2; UKCA
Indoor Use Only
Limits of Detection
These gases can be detected with the Restek electronic leak detector at the following leak rates:
Minimum Detectable Gas Limits and Indicating LED Color:
Helium, 1.0 x 10-5, red LED
Hydrogen*, 1.0 x 10-5, red LED
Nitrogen, 1.4 x 10-3, yellow LED
Argon, 1.0 x 10-4, yellow LED
Carbon dioxide, 1.0 x 10-4, yellow LED
Gas detection limits measured in atm cc/sec.
Avoid using liquid leak detectors on a GC! Liquids can be drawn into the system and/or into the leak detector.
*Caution: The Restek electronic leak detector should only be used to detect trace amounts of hydrogen in a noncombustible environment. It is NOT designed for determining leaks in a combustible environment. A combustible gas detector should be used for determining combustible gas leaks under any condition. When using it to detect hydrogen, the Restek electronic leak detector may only be used for determining trace amounts in a GC environment.
Restek's Competitive Advantage: Comparing Leak Detectors
Restek Leak Detector | Agilent G3388B | GOW-MAC 21-070 (Mini) | |
Battery rating |
12 hours normal operation |
5 hours normal operation |
8 hours normal operation |
Battery type |
NiMH |
Lithium ion |
Nickel cadmium |
Leak indicator |
Incremental visual (LEDs) |
Incremental visual (LCD & LED) |
Incremental visual (LEDs) |
Helium leak sensitivity |
1 x 10-5 cc/sec |
1 x 10-4 cc/sec (standard range) |
1 x 10-5 cc/sec |
Weight |
252 grams |
95 grams |
476 grams |
Handheld? |
Yes |
Yes |
No |