Business Hours

teklab building

Our business hours are 8:00am to 5:00pm (Monday through Friday). Emergency samples are accepted on as-needed basis and must be coordinated with Teklab Inc. in advance. After hours please leave a message on our business phone (618-344-1004) and your call will be returned.

Friday, April 7th 2023 Good Friday  
Monday, May 29th 2023 Memorial Day
Tuesday, July 4th, 2023  Independence Day
Monday, September 4th, 2023 Labor Day
Thursday & Friday, November 23rd & 24th, 2023
*  Nov 21st no HPCs.
**Nov 22nd, No HPC/No Coliform. Do not ship samples. Pickups end 2.30 pm. Receipt ends 4pm. 

Monday, December 25th, 2023 - avoid shipping 22nd Dec
Monday, January 1st, 2024    - avoid shipping Dec 29th                                                      
New Year

** No coliform includes Total Coliform/Bacteria, Fecal Coliform and E Coli

Please avoid sampling and/or delivering samples for short hold time analyses such as BOD/CBOD, Nitrate, Nitrite, Cr+6, MBAS, etc. after Noon on November 22nd and December 22ndDeliver all samples by 4PM.

Please contact your Project Manager if you have questions about the schedule or if you have special needs during the holiday season.