Attention:

Certain features of Sigma-Aldrich.com will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

PID Lamps and FID Cleaning

Replacing PID lamps and cleaning FID jets on a routine schedule will help keep the GC system in peak operating condition.