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Chapter 5
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Orion AQUAfast Reagent Chemistry Instructions for Orion AquaMate
Thermo Scientific
Orion AquaMate Spectrophotometer User Manual
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121
Precision
Method UV254_1
# of Samples
Tested
Maximum %RSD
(per SM 5910B)
Result (AQ8000) Evaluation
Absorbance
14
< 10.7% RSD
0.3% RSD
Good
Precision: readings of a KHP organic carbon standard at 25.0 mg/L in phosphate buffer
(prepared per SM 5910B) tested in a 1 cm cell demonstrate good precision:
•
The relative standard deviation (RSD) of 14 test results on the AQ8000 is 0.3% RSD, well
within the maximum 10.7% limit expected per SM 5910B.
Notes
1.
If the preprogrammed method is not on the memory stick, download the method file from
the our Online Library at
www.thermoscientific.com/waterlibrary
, or call Technical Support.
2.
Alternately, use disposable cuvettes formulated for UV measurements, available in the 1
cm (10 mm) cell path.