Call Toll Free 1-833-386-9248 for accredited gas questions.


Question: What quality assurances do you offer?

Answer: All gases are highly purified to NIST standards, come with a 6 to 24-month expiration date (Chlorine is six months, the longest in the industry), lab certification, and a 100% money back customer satisfaction guarantee.

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)

Question: What is the warranty?

Answer: Gases come with a 1-2 year warranty depending on the gas, with the exception of chlorine which has a six-month warranty.

Question: What is the shipping fee?

Answer: At checkout, every calibration gas order will be charged $39 which covers the Hazmat Handling Fee and ground shipping. Order as many gases you like and only pay $49 at checkout. 

Question: How soon do the gases ship?

Answer: Generally all orders ship within 2-4 business days, unless it is a custom mix.

Question: How do I send in my recyclable refill bottles?

Answer: Go to Peel off the label to reveal the return label and ship them back at no charge.

Question: Will these gases void the warranty on my gas detector?

Answer: No, these are highly purified calibration gases and are exact matches to the gas you currently use.

Question: How do I dispose of my gas cylinders?

Answer: It really depends on the state that you live in and their disposal regulations. Always vent the tank to make sure the all gas has been removed. For disposable cylinders take a screw driver and press the tip, hit the screw driver with a hammer to push tip in. Some companies also drill a hole in the bottom and top before throwing the tank in the trash or recycle bin. For refillable bottles return to us with the return label that is affixed to the bottle and have it refilled or just recycled.

Please use our calibration gases for testing and in a safe manner.