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.

2021 Holiday Schedule PDF

Friday, April 2nd 2021   Good Friday  
Monday, May 31st 2021 Memorial Day
Monday, July 5th, 2021 Independence Day
Monday, September 6th, 2021 Labor Day
Thursday & Friday, November 25th & 26th, 2021
** Wednesday 23rd November -  no HPCs.
Thursday 24th November - No coliform/do not ship. Pickups end 2:30, receipt ends 4:00
Friday, December 24th, 2021
** Wednesday 22nd  - no HPCs.
Thursday 23rd - no coliform/do not ship. Pickups end 2:30, receipt ends 4:00
Friday, December 31st , 2021 
** Wednesday 29th December - no HPCs.
Thursday 30th December - no Coliform/do not ship. Pickups end 2:30. Receipt ends 4:00                                                                        

New Year

 **Routine/Municipal Total Coliform samples with colonies present may not be confirmed.**  “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 24th, December 23rd, and December 30thDeliver 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