Controls Services (QCS) was established in 1974 to fill the need for precision calibration services and quality sales. QCS has over 30 years experience in calibration, service and repair of all makes and models of precision balances.

With the addition of our Echelon 1 Metrology Laboratory, and A2LA Accreditation (Certificate 1550.01/Laboratory Code 115953), QCS now offers calibration and certification on precision weights and balances in compliance with ISO/ISE 17025-1999 and ANSI/NCSL Z540-1994. Our laboratory meets "General Requirements for the Competence of Calibration and Testing Laboratories" (and equivalent relevant requirements of the ISO 9000 series of standards) and any additional requirements in the identified field of calibration. The scope of this accreditation also includes Thermometers (liquid-in-glass & digital), Force (tension & compression), Furnaces, Ovens, Incubators, Autoclaves, Cold Boxes, pH meters and Pipettes. If calibration with documentation is a part of your Quality Assurance Program then call us for more information on A2LA calibration services. All certifications are NIST traceable.

QCS is a direct distributor for the following lines of products: Sartorius, Cahn, Setra, Ohaus, Seiler, Orion, YSI, Nova Instruments, Miller & Weber Thermometer, IQ Scientific, and Rotronics. Visit our Sales page to find more information regarding purchasing any of our lines of laboratory equipment.

QCS provides non-A2LA accredited calibration services and repair facilities for Dissolved Oxygen, Turbidimeters, Spectrophotometers, and Conductivity meters.

Please contact QCS for any of your calibration or laboratory equipment needs:

Mailing Address

P.O. Box 14831
Portland, Oregon 97293


2340 SE 11th Avenue
Portland, Oregon 97214

Phone Numbers

Local 503-236-2712
Fax 503-235-2535
Toll Free 800-843-1237