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About us

Calibration Gas by EGas Depot

EGas Depot provides high quality, precision calibration gas mixtures for gas detectors, and our products are made in the USA.  We provide a large range of gas mixtures, from simple gases, such as ultra high purity Nitrogen, to complex four-gas mixtures and highly reactive calibration gas mixtures.  We also offer a large variety of cylinder sizes, regulators, carrying cases, and accessories. 

EGas Depot is a division of CIH Equipment Company, Inc., our A2LA ISO 17025-2017 accredited calibration lab specializing in the calibration of health and safety test equipment. The laboratory is run by our CEO, David Silver, PhD, CIH.



We quickly produce custom calibration gas blends at your request and add them to our online catalog for future ordering. Call 833-386-9248 for assistance.


EGas Depot offers significant savings in other areas such as

  • Gas monitor calibration
  • Gas monitor repair
  • Industrial hygiene repair and calibration


EGas Depot gases are manufactured to ISO and NIST standards at a contracted Idaho facility. Nampa, Idaho is centrally located to distribute to all areas of the continental United States and international locations.

Our staff technicians can assist with the proper gas mixture for your calibration requirements.  

10-20 ppm +/- 5%
21 ppm – 10,000 ppm +/- 2%
1% - 95% +/-2%

Reactive (H2S, NOx, NH3, SO2)
5 – 9 ppm +/- 20%
10 - 20 ppm +/- 10%
21 – 100 ppm +/- 5%

Reactive (CL2)
2 - 10 ppm (+/- 1 ppm)


EGas Depot is the price leader. We purchase in large quantities and pass the savings on to our customers. This allows EGas Depot to provide exceptional products and services at highly competitive prices. 

Calibration Gas Supplier

Calibration gas standards and gas mixtures are available in cylinder sizes from 11 liter to 900 liter. EGas Depot offers a wide range of calibration gases for your portable gas detectors. You'll find a variety of gases, including carbon monoxide, hydrogen sulfide, methane and many more. We offer a calibration gas refill program for hydrogen sulfide (H2S) calibration gas, sulfur dioxide and many other gases.  

Calibration Gas Refills Can Save You up to 40%

Take advantage of great savings by using our refill program. We can provide a pre-printed return label so it is easy to send back your gas cylinders for a refill. Please call to join our refill program and get exclusive low cost refill pricing. 

Calibration Gas Cylinder Sizes

We offer a large range of calibration gas cylinder sizes 11L, 20L 34L, 58L, 60L,  66L, 103L, 116L, 120L, 130L, 221L, 580L and 850L .

Applications of Calibration Gases

Calibration gas is a comparative standard in the calibration of analytical instruments. Some of the applications we provide calibration gas for are portable gas detection monitors, air quality monitors, gas detection systems (fixed), flame ionization detectors, continuous emission monitoring systems, process gas chromatographs, infrared gas detection systems, ion mobility spectrometers, and photo ionization detectors. 
Get Instant Online Calibration Gas Quotes
Do you need a quote now? You can build a calibration gas quote online. Each product page has an add-to quote button. Simply browse through the website and click on those products that you want added to your quote (the add-to quote button is on each individual product page). Then simply hit the request quote button. An email with an attached PDF will be sent out to you immediately. There is a link in the PDF that will bring you back to a shopping cart if you decide to purchase those gases. You can also edit and add to your cart at that time.


Are You a Distributor of Other Brands?

EGas Depot does not distribute any other brands. EGas Depot does provide an OEM cross reference for other brands but does not sell those brands. This makes it easier to locate the equivalent gas mixtures and gives you the ability to compare prices. ALL name brands are trademarks and/or service marks of their respective owners. EGas Depot is not affiliated with, endorsed, or sponsored by any of said entities and the listed brands are mentioned for comparison shopping only.


Note: Read and follow all Safety Data Sheets (SDS's) before use. Read label before use. Keep out of reach of children. If medical advice is needed, have a product container or label at hand. Use equipment rated for cylinder pressure.


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