Troemner’s Pipette Calibration Laboratory was the first NVLAP accredited laboratory for pipettes in the United States. Troemner offers a complete calibration and repair service for most brands of pipettes, repeaters and burettes from 0.1 µl up to 100 ml.

 
 
 
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Facility and Environment

Troemner's state-of-the-art Pipette Calibration Laboratory meets or exceeds the requirements listed in internationally recognized standards. This laboratory was carefully designed and constructed to reduce the effects of vibrations and to strictly control and monitor the environment. Temperature in the laboratory is measured to ± 0.01 degree C and controlled to within 0.2 degree C, with no more than a 0.2 degree C change per hour. Humidity is measured to ± 2% with no more than a 5% change per hour. Barometric pressure is measured to 0.01 mm Hg.

 
Equipment

Troemner has invested in the most advanced instrumentation including gravimetric and spectrophotometric equipment for calibrations of pipettes. Gravimetric pipette calibrations are performed using six high precision balances and mass comparators; some with resolution as low as 1 µg. Troemner also uses humidity traps and other methods to assure accurate gravimetric calibrations. Due to the direct relationship between weight and volume, the Troemner reputation for weighing accuracy is fully utilized in the pipette calibration process to achieve low measurement uncertainties. Spectrophotometric calibrations are performed using photospectrometry, whereby refractive index is proportional to volume. Both techniques assure that only the highest standards are met for complete reliability of pipette calibrations.

 
Staff

Troemner's staff of metrologists and technicians possesses a high level of expertise in performing superior pipette calibrations, adjustments and repairs. Troemner’s metrology staff and calibration technicians also have training from several pipette manufacturers.

 
Processes

Troemner’s pipette calibrations are comprehensive and include details such as making sure that every channel of a multi-channel pipette is fully tested and calibrated. Troemner performs vacuum and leak tests, cleans every pipette, greases the piston, and inspects seals and "O" rings to assure performance accuracy after the calibration. Calibration procedures also include full service and parts availability for all types and brands of pipettes. Free repair estimates are provided.