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Question: What quality assurances do you offer?

Answer: All gases are highly purified to NIST standards, come with a 12 to24 month expiration date (Chlorine is 6 month - 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 that has the a 6 month warranty.

Question: What is the Shipping fee:


Every Calibration Gas order will be charged $39.00 at check out for Hazmat Handling Fee and ground shipping.  Order as many gases you like and only pay $39.00 at check out.


Question: How soon do the gases ship?

Answer: Generally all orders ship within 2-4 business days.

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

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

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

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

Question: How much discount do I get when using the refill program?

Answer: Gases are 20% off minimum.


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