parr 6400 - Calorimeter Control Limit Values in Cal;G

Standardizations
48
6
Calorimeter Control Limit Values in cal/g
When Benzoic Acid is Used as a Test Sample
Accepted heat of combustion taken as 6318 cal/g.
Instrument precision 0.10 %.
Control limits based on 99 % confidence (3 sigma) values.
Values are in cal/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 19.0
2 23.3 0.261 % 13.4
3 27.5 0.228 % 10.9
4 29.7 0.209 % 9.5
5 31.1 0.196 % 8.5
6 32.1 0.187 % 7. 7
7 32.9 0.181 % 7. 2
8 33.5 0.175 % 6.7
9 34.1 0.171 % 6.3
10 34.6 0.167 % 6.0
11 35.0 0.164 % 5.7
12 35.3 0.161 % 5.5
13 35.7 0.159 % 5.3
14 36.0 0.156 % 5.1
15 36.3 0.154 % 4.9
16 36.5 0.153 % 4.7
17 36.8 0.151 % 4.6
18 37.0 0.150 % 4.5
19 37.2 0.148 % 4.3
20 37.4 0.147 % 4.2
21 37.6 0.145 % 4.1
22 37.8 0.145 % 4.0
23 37.9 0.144 % 4.0
24 38.1 0.143 % 3.9
25 38.3 0.142 % 3.8