Tektronix is the world's leading provider of multi-vendor calibration, repair and related services. We create sustainable value for companies that rely on test, measurement and control instrumentation, through the world's most extensive network of measurement professionals, facilities and resources.

Swan PCS is a woman owned small business local to St. Louis, MO. We are dedicated to providing our clients with a quality streamlined service. Swan PCS is an ISO 17025 Accredited Pipette Calibration Company with a combined 20 years experience in the field of pipette calibration. We have the knowledge and experience to keep your pipettes and balances working at peak performance, therefore improving the quality of your test results.