Frequently Asked Questions

Reference Materials

How can I order a custom gas standard?

Use the Air Standards Quote Sheet. The information needed to complete this form includes the analyte name(s) and CAS number(s), concentration(s), balance gas, and the size of the cylinder. It also is important to select the type of CGA fitting for the cylinder, which might be dictated by the balance gas. We can provide a single or dual stage regulator as part of the request.

You can also obtain an "Air Standards Quote Sheet" by calling Restek’s Technical Service at 800-356-1688, ext. 4.