How are the Tensette® Pipets and the BBP Variable Pipets calibrations checked after assembly?

Document ID

Document ID TE7755

Published Date

Published Date 04/16/2019
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Question
How are the Tensette® Pipets and the BBP Variable Pipets calibrations checked after assembly?
Summary
Tensette® Pipets and the BBP Variable Pipets calibration check procedures
Answer
After pipet assembly for the Tensette® Pipets, an electronic scale is used to measure the water delivery weight by the pipet to confirm it is within specifications. Each pipet must pass 3 times.
  • For the Tensette® Pipet, 0.1-1.0 mL (Product # 1970001), the operator will rotate the plunger to 1 mL and then weigh out the water. If the water weight is between 0.9857-1.0057 g, it passes.
  • For the Tensette® Pipet, 1.0-10 mL (Product # 1970010), the operater will rotate the plunger to 1 mL and then weigh out the water. If the water weight is between 0.9850-1.0150 g, it passes.
The Pipette, Variable Volume, 1.0 - 5.0 mL and Pipette, Variable Volume, 0.2 - 1.0 mL (Product # BBP065 and BBP078) follow a similar pass/fail process. After assembly, the pipette is tested 5 times by weighing out various volume settings. The weight is determined in milligrams to the first decimal place and then compared to the weights in the chart below:

If the weight is not within the designated range, the pipette is recalibrated.
 

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