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
(**No HPCs after Nov 24th. No shipping/no coliform 25th Nov.
Friday, December 24th, 2021
(** no HPC after Dec 23rd. No shipping/coliform on the 23rd December)
Friday, December 31st , 2021 
(** no HPC after Dec 30th. No shipping/coliform on the 31st December)

New Year


      No-one will be available to accept Saturday deliveries without a holiday surcharge being applied

    **Routine/Municipal Total Coliform samples with colonies present may not be confirmed.**
    “No Coliform” includes Total Coliform/Bacteria, Fecal Coliform, and E Coli. Friday holiday/closure Micro samples will not be accepted the day prior. Shipping
 should be avoided as deliveries will be delayed due to the closure.  Please contact Teklab for HPC scheduling around holidays.

    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 31st.
    Please contact your Project Manager if you have questions about the schedule
    or if you have special needs during the holiday season