Standardizations
6400
6
47
Any outliers or other tests which should not be
included in the average EE Value must be deleted
from the memory using the memory management
procedures (see Chapter 10). A list of all tests associ-
ated with any Cal ID can be printed from the Calibra-
tion Data Page using Print Standardization Runs.
The user can elect to have any number of stored
standardization runs used in determining the EE
value by entering this number on CALIBRATION
DATA & CONTROLS menu - CALIBRATION RUN LIMIT.
EE Max Std Deviation on this same page establish-
es the maximum allowable standard deviation for
the EE Value before an error condition is reported.
The default value is zero which turns off this limit.
But the user should enter a value appropriate for
the test being made.
Calorimeter Control Limit Values in J/g
When Benzoic Acid is Used as a Test Sample
Accepted heat of combustion taken as 26454 J/g.
Instrument precision 0.10 %.
Control limits based on 99 % confidence (3 sigma) values.
Values are in J/g.
NUMBER OF
OBSERVATIONS
IN A GROUP
UCL FOR THE RANGE
(HIGH – LOW) WITHIN
THE GROUP
UCL FOR THE
RSD WITHIN
THE GROUP
MAXIMUM PERMISSIBLE
DEVIATION OF THE GROUP
MEAN FROM THE ACCEPTED
VALUE OR GRAND MEAN
1 79.4
2 97.5 0.261 % 56.1
3 115.3 0.228 % 45.8
4 124.3 0.209 % 39.7
5 130.1 0.196 % 35.5
6 134.3 0.187 % 32.4
7 137.6 0.181 % 30.0
8 140.4 0.175 % 28.1
9 142.7 0.171 % 26.5
10 144.7 0.167 % 25.1
11 146.4 0.164 % 23.9
12 147.9 0.161 % 22.9
13 149.4 0.159 % 22.0
14 150.7 0.156 % 21.2
15 151.8 0.154 % 20.5
16 153.0 0.151 % 19.8
17 154.0 0.151 % 19.2
18 154.9 0.150 % 18.7
19 155.8 0.148 % 18.2
20 156.7 0.147 % 1 7. 7
21 157.4 0.146 % 1 7. 3
22 158.2 0.145 % 16.9
23 158.9 0.144 % 16.5
24 159.5 0.143 % 16.2
25 160.2 0.142 % 15.9
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