11. Calibration and Standardization
11.1 Adjust the automated CFPP apparatus (when used) in
accordance with the manufacturer’s instructions.
11.2 Calibrate the temperature measuring device in accordance with the manufacturer’s instructions.
11.3 Periodically verify the correct functioning of manual
and automated apparatus using a certified reference material or
in-house secondary reference material, such as fuel of known
CFPP value.
NOTE 6—It is preferable that verification be carried out at least two
times a year, where possible, using certified reference materials. The
apparatus should be checked more frequently (for example, weekly) using
a secondary verification material.
11.4 When the CFPP values obtained using a verification
material deviate by more than the test repeatability (see 15.2),
or an unacceptable statistical quality control bias is observed,
check the condition and operation of the apparatus to ensure
conformity with the specification as stated in this test method.
The manufacturer’s instruction manual should provide guidance on ensuring that the apparatus is correctly set up and
calibrated