Please submit a new form for each custom air reference material you wish to request.
compound: Component(s) which will make up the reference mix (example: dimethyl sulfide, formaldehyde, etc.)
CAS#: Chemical abstract services registry number.
concentration: ppm (parts per million), ppb (parts per billion) or percent.
PLEASE NOTE: Custom Restek products (i.e., non-stocked, non-catalog items) that meet the requested product specifications are not returnable or refundable. Be sure to check the product specifications in your quote request before submitting. Also, recheck the specifications in your sales quote before placing your order. If you have any questions, contact Restek or your local Restek representative.