CLS a group of Contract Laboratories is the leading provider of sampling,analysis and supply on analysts on contract to the food, environmental, pharmaceutical and medical device industries. Founded in 1994, CLS has developed a reputation for delivering high-quality laboratory data with a customer focused service in a timely manner.

Clients & Quality: The CLS group of laboratories has the accreditation’s and approvals required to allow us to work in partnership with our clients.

Staff: We view our staff as our most valuable asset. We have a complimenting mix of highly qualified laboratory analysts, supported by quality, HR, Logistics management, Finance and IT.

Sample collection: We collect anywhere in Ireland, offer controlled temperature transport if required, provide a full chain of custody and manage this area completely for our clients.

Reporting results: At CLS our Laboratory Information Management System (LIMS) provides our Enterprise Resource Planning System (ERP) results of tests  online. Clients can securely download their results and trend their data and or apply limits for compliance. The system complies with GAMP guidelines and FDA 21 CFR part 11.

CLS analysts on client sites: We supply fully trained microbiology and analytical analysts to clients on contract and support the contracts by ongoing visits to support both our analysts and management of the host company.


Our centres of excellence include the following:

Environmental Sampling & Testing Food/Beverage Pharmaceutical / Medical Devices
Water: wastewater, potable water, process water, groundwater & surface water Meats and fish Catheters, stents, drugs, orthopedics, combined devices, medical scaffolds, capillaries & delivery systems, polymers and plastics
Soil and sludge Salads Microbiological testing
Analytical testing Ready-to-eat dishes Analytical testing
Microbiological testing Beverages Contract R&D
Sampling (land & water) Plant hygiene, air & water Supply analysts on contract
Supply analysts on contract Microbiology Premarket studies on integrity and ingress
Validation and commissioning Food chemistry Cleanroom environmental monitoring
Noise / vibration Tank & pipe network sterilisation Methods transfers
Flow & load Cleanroom validation / environmental monitoring Cleaning validation, QP of water loops, compressed air testing