Advanced Instruments OsmoTECH XT - Appendix A: Performance Characteristics; Accuracy; Repeatability; Temperature Effects

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OsmoTECH XT Single-Sample Micro-Osmometer User Guide
Appendix A
Appendix A: Performance
characteristics
Definitions
Accuracy
Closeness of agreement between a test result and the accepted reference value (ISO 5725-1)
Repeatability
Precision under conditions where independent test results are obtained with the same method on identical test items
in the same laboratory by the same operator using the same equipment within short intervals of time
(ISO5725-1:1994)
Source: Harmonized Terminology Database at http://clsi.org
Characteristics
Range
1
0 to 4000 mOsm/kg H
2
O
Resolution
1 mOsm/kg H
2
O
Accuracy
2
(AI standards and reference solutions)
±2 mOsm/kg H
2
O from nominal value between 0 and 400 mOsm/kg H
2
O (1 SD)
±0.5% from nominal value between 400 and less than 1500 mOsm/kg H
2
O (1 SD)
±1% from nominal value from 1500 to 4000 mOsm/kg H
2
O (1 SD)
NOTE: For more information about accuracy, see Quality control.
Within-run repeatability
2
(AI standards and reference solutions)
Standard deviation ≤ 2 mOsm/kg H
2
O between 0 and 400 mOsm/kg H
2
O
Coecient of variation ≤ 0.5% between 400 and less than 1500 mOsm/kg H
2
O
Coecient of variation ≤ 1% from 1500 to 4000 mOsm/kg H
2
O
Temperature Eects
Less than 1 mOsm/kg H
2
O for every 5 °C (9 °F) ambient temperature change
Operating Conditions: Temperature 18 °C to 35 °C (64 °F to 95 °F); 5% to 80 % relative humidity (non-condensing).
1 Advanced Instruments completes testing from 0 mOsm/kg sample to 4000 mOsm/kg sample during in-house linearity testing (reportable range 0 to 4200 mOsm/kg H
2
O) .
2 Performance at Reference Conditions: 20 °C to 25 °C (68 °F to 77 °F); 40 to 60% relative humidity.