CHL will be closed June 30th- July 4, 2025. Operations will resume on July 7, 2025.
CHL will be closed June 30th- July 4, 2025. Operations will resume on July 7, 2025.
CHL is getting a facelift! Renovation to update our facilities starts soon,
please see details below.
The lab will be closed on June 19th and June 30-July 4, 2025
Supply orders and sample analysis will not be available while the lab is closed.
Please note the following sample receipt deadlines to ensure lab reports are delivered before the extended closure:
7 business day TAT - 3:30 pm on Wednesday, June 18, 2025
(Standard analysis rates)
4 business day TAT- 3:30 pm on Monday, June 23, 2025
(50% analysis surcharge)
48-hour TAT-3:30 pm on Wednesday, June 25, 2025
(100% analysis surcharge)
Downloadable Chain of Custody form required for sample check-in.
Check out these Shipment Recommendations to ensure your samples arrive in excellent condition.
IMPORTANT NOTICE! If shipping samples via USPS please use University address: 1906 College Heights Blvd., Bowling Green, KY 42101. Only UPS and FEDEX will deliver directly to our physical location.
Step-by-step Dye Tracing Instructions for field activities.
Detailed Research Procedures for groundwater investigations in karst environments.
Expanded information about our staff, services, and clientele.
Tinopal CBS-X (Optical Brightner)
Pyranine (Solvent Green 7)
Fluorescein (Sodium fluorescein, Acid Yellow 73)
Eosine OJ (Acid Red 87)
Rhodamine WT (Acid Red 388)
Sulphorhodamine B (Acid Red 52)
Crawford Hydrology Laboratory
1500 State Street, Suite 304, Bowling Green, Kentucky
Call: 270-745-3458 OR 270-745-9224