If you encounter a problem using your MKS product or just have a question, you can use any of the following methods to contact us:
Hours of Operation
Our support hours are 09:00 to 19:00 Eastern Standard Time on weekdays, except for holidays and other regularly scheduled days off. In the event that we have to close for some other reason (weather, for example), we will do our best to let you know in advance and to monitor critical issues from home.
We will be closed on the following days:
| Holiday | 2007 | 2008 |
| New Year's Day | Monday, January 1 | Tuesday, January 1 |
| Presidents Day | Monday, February 19 | Monday, February 18 |
| Good Friday | Friday, April 6 | Friday, March 21 |
| Memorial Day | Monday, May 28 | Monday, May 26 |
| Independence Day | Wednesday, July 4 | Friday, July 4 |
| Labor Day | Monday, September 3 | Monday, September 1 |
| Thanksgiving | Thursday, November 22 | Thursday, November 20 |
| Thanksgiving | Friday, November 23 | Friday, November 21 |
| Christmas Eve Day | Monday, December 24 | Wednesday, December 24 |
| Christmas Day | Tuesday, December 25 | Thursday, December 25 |
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