Restek Electronic Leak Detector
  1. Restek Electronic Leak Detector

Restek Electronic Leak Detector

Catalog No. 28500
Restek Electronic Leak Detector

Restek Electronic Leak Detector


Features & Benefits

New and improved! Prevent small leaks from causing big problems with a Restek leak detector.

  • Detects a broad range of gases and indicates leak severity with both an LED display and audible tone.
  • No more waiting for a full charge—can be operated during charging or used up to 12 hours between charges.
  • Charging kit includes both universal AC power adaptor and USB charging cable, so you can charge anywhere, anytime.
  • Pinpoint very small gas leaks quickly and accurately before they cause damage and downtime.
  • Compact, handheld unit is easy to operate and convenient to use anywhere you need to check for leaks.

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.

Features & benefits include:
  • Detects a broad range of gases.
  • Audible tone and LED display indicate the severity of a leak.
  • Can be operated during charging or used up to 12 hours between charges.
  • Ergonomic, handheld design.
  • Rugged side grips for added durability.
  • Handy probe storage for cleanliness and convenience.
  • Automatic shutoff.
  • A convenient carrying and storage case.
  • Easy-to-clean probe assembly.
  • A universal AC power adaptor (U.S., UK, Europe, Australia, Japan).
  • USB charging cable.

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


Lithium ion

Nickel cadmium

Leak indicator

Incremental visual (LEDs)
Incremental audible

Incremental visual (LCD & LED)
Step audible

Incremental visual (LEDs)
Audible at maximum

Helium leak sensitivity

1 x 10-5 cc/sec

1 x 10-4 cc/sec (standard range)
1 x 10-5 cc/sec (high range)

1 x 10-5 cc/sec


252 grams

95 grams

476 grams






Product Specifications
Catalog No.
Product Name
Restek Electronic Leak Detector