Particle Technology Labs is open during most public holidays with few exceptions. 

Please note the following closures to plan for shipments that may require expedited service,  temperature control, or other special consideration.

Samples are not received or processed on the following days in 2022:



Memorial Day - May 30

Independence Day - July 4

Labor Day - September 5

Thanksgiving - November 24 & 25

Christmas - December 23 & 26

New Year's - December 30 & January 2, 2023