PTC Metrology™ provides temperature calibration and certification services.
quality assurance systems require that calibrated and certified
thermometers be used where accurate measurements are of importance. PTC®
has calibrated thermometers for over 60 years and is now accredited by
A2LA to ISO/IEC 17025 and ANSI/NCSL, Z540-1. Please download our scope
of accreditation from A2LA.
certification will contain the as received and as returned calibration
results of the UUT at 3 points across the UUT's temperature scale. In
addition to the readings, certification will include laboratory
conditions, information on the primary standards and a statement of
uncertainty. Add NIST/A2LA (ISO 17025) Certification 3 Logged Points
PTC®'s Choosing (between ambient and 390°C)
will include; as received and as returned data; a statement of
uncertainty; laboratory conditions; and information on the primary
In temperature calibration, PTC® has
chosen primarily products from Hart Scientific, which supplies most
national and international standards labs with calibration equipment.
The Hart Scientific Super Thermometer 1575A is center stage along with
several SPRT’s featuring calibration traceable to the fixed points of
the ITS-90 temperature scale. A water triple point cell (0.01°C ±0.0001)
is used to correct any drift that the SPRT may experience on an ongoing