©Trefoil Controls Ltd. 2019


Trefoil Controls Ltd offer calibration
management services to industry.

We calibrate portable and fixed
temperature probes, data loggers,
pressure gauges, conductivity meters, pH meters, weight measurement devices, and timing devices as well as other analytical equipment.


With calibration management software CompuCal Calibration our customers can be confident that calibrations are managed correctly and on time.

All test equipment is traceable to national and international standards.

Calibrations are completed to pre-agreed SOP's.
Trefoil Controls Ltd also handles and schedules specialised calibrations with external laboratories on our client’s behalf.

Customer Web Portal

All our calibration contract customers have access to a single location, password protected customised web portal where all documentation is stored. Here our clients can access
equipment schedules (lists of equipment and calibration schedules), calibration certificates, calibration procedures, test equipment certificates, risk assessments, safety statements,
insurance certificates and service reports.

The Trefoil Controls Web Portal ensures quality and customer audits run smoothly, giving our clients the confidence that all calibration documentation is in one place and any questions asked by an auditor can be answered immediately.