18
(1)
Manual adjustment mode
With manual setting, prepare 3 or 5 samples and calculate the difference between
average value of AN-900 and average value of standard samples for each composi-
tion. Because this alternative uses multiple samples to perform the bias adjustment,
it is able to perform more accurate bias adjustment than automatic adjustment.
Example of calculating Protein value and Performing Manual setting
In case of 3 type of sample (as Standard Samples)
• Measure samples to be tested 3 times each by AN-900 and culculation
Protein Values
A
B
C
1th time
6.3
5.4
7.0
2th time
6.4
5.3
7.0
3th time
6.2
5.3
7.1
Average
6.3
5.3
7.0
Average of 3 sample’ s average (6.3+5.3+7.0)/3= 6.2
• Calculate average of standard sample’ s values (as standard samples)
A
B
C
Protein of standard sample
6.8
5.6
7.4
Average of satandard sample’ s (6.8+5.6+7.4)/3= 6.6
• Calculate BIAS value
BIAS value = AV. standard samples - AV. measurements
0.4
=
6.6
-
6.2
0.4 is diecided as BAIS value
BIAS procedure is shown on the next page
When you can not prepare more than one standard sample
In order to perform accuracy and successful bias adjustment, we recommend
the alternative where you need 3 or 5 samples as standard samples, as is
mentioned above. However, in case that you only have one standard sample,
as s simple alternative, you measure it three time, and calculate average, and
decide BIAS value.
• Measure samples to be tested 3 times each by AN-900 and culculation
Protein average of measured values by AN-900
6.3
• Refer to standard sample protein value
6.8
• Calculation bias value
BIAS value = Standard value of sample - AV. measurements
0.5
=
6.8
-
6.3
0.5 is diecided as BAIS value
Содержание AN-900
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