Computrac MAX-1000 User's Manual - Arizona Instrument

12.4.5 If the mean is still out of tolerance, call Arizona Instrument Customer Service forassistance.12.5 RETAINED SAMPLESThe weight test and the sodium tartrate test are usually sufficient to satisfy industryguidelines for quality control in moisture measurement. Some additional checkscan be performed using replicate testing of retained samples. Retained samples,when stored under airtight conditions, should maintain moisture levels for longperiods. Daily testing of these samples should produce the same results day afterday. Retained samples further verify the unit's operation on the customer's ownproduct.12.5.1 Let the system warm up for 20 minutes.12.5.2 Set the MAX-1000 to the optimum test temperature for the retained sample or usethe ID Number of a test which has been stored in memory.12.5.3 Place a clean aluminum sample pan onto the pan support in the test chamber.12.5.4 Close the lid and push the “START” key.12.5.5 When the OPEN LID display appears, GENTLY add the optimum amount ofretained sample evenly across the sample pan.12.5.6 Close the lid and allow the test to continue.12.5.7 Record the final result in the quality control log.12.5.8 The % MOISTURE results for the retained sample should fall within theestablished acceptable range of results for that sample. If results are out of range,repeat the test to verify results.58