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 | 2009 | 2010 |
| New Year's Day | Thursday, January 1 | Friday, January 1 |
| Presidents Day | Monday, February 16 | Monday, February
15 |
| Good Friday | Friday, April 10 | Friday, April 2 |
| Memorial Day | Monday, May 25 | Monday, May 31 |
| Independence Day | Friday, July 3 | Monday, July 5 |
| Labor Day | Monday, September 7 | Monday, September 6 |
| Thanksgiving | Thursday, November 26 | Thursday,
November 25 |
| Thanksgiving | Friday, November 27 | Friday, November 26 |
| Christmas Eve Day | Thursday, December 24 | Friday, December 24 |
| Christmas Day | Friday, December 25 | Monday, December
27 |
| 
