Filter
Top Products
AZI Customer Service 800-528-7411 or 602-470-1414 Page 74 of 92
8.5. Retained Samples
The weight test and the sodium tartrate test are usually sufficient to satisfy industry
guidelines for quality control in moisture measurement. Some additional checks can be
performed using replicate testing of retained samples. Retained samples, when stored
under airtight conditions, should maintain moisture levels for long periods. Routine
testing of these samples should produce the same results day after day. Retained
samples further verify the unit's operation on the customer's own product. If hygroscopic
materials are used, the values can change with time and repeated opening of the
container.
Set the MAX 5000XL to the optimum test temperature for the retained sample or
use the ID number of a test that has been stored in memory.
Place a clean aluminum sample pan onto the pan support in the test chamber.
Close the lid and press [START].
When the “OPEN LID” display appears, GENTLY add the optimum amount of
retained sample evenly across the sample pan.
Close the lid and allow the test to continue.
Record the result in the quality control log.
The results for the retained sample should fall within the established acceptable
range of results for that sample. If results are out of range, repeat the test to verify
results and/or perform standard reference testing to certify the percent moisture
value.