6.2.2 Differential Weighing
The Differential Weighing application is used to analyze changes in the weight of one
or more samples. The first step is to determine the initial weight of the sample (weighing
in). Selected components are then separated from or added to the sample. This
includes procedures such as drying, centrifugation, filtering, incineration, vaporization,
coating, etc. After the sample has been processed, it is re-weighed (residual weight).
The balance then determines the difference between the two weighed values.
100L (Loss)
The moisture content of the sample is displayed (and printed out) as a percentage of the
wet weight (= ww = initial weight = 100%). When the results are printed out, the moisture
content is designated
100L %
" (
Loss
) (e.g. –11.35 100.00L%) and shown as a negative
value.
Dry weight
DW
–
Wet weight
WW
100L
[0…-100%] = -------------------------------------------- *100%
Wet weight
WW
100R (Residue)
The dry content of the sample is displayed (and printed out) as a percentage of the wet
weight (= ww = initial weight = 100%). When the results are printed out, the dry content is
designated
"100R%
" (
Residue
) (e.g. 88.65 100.00R%).
Dry weight
DW
100R
[100…0%] = -------------------------------------------- *100%
Wet weight
WW
AtroM Moisture Content
The moisture content of the sample is displayed (and printed out) as a percentage of the
dry weight ( = DW = final weight = 100%). When the results are printed out, the ATRO
moisture content is designated “
AtroM
%" (
A
TRO
M
oisture Content) (e.g. –255.33 AtroM %)
and shown as a negative value.
Dry weight
DW
–
Wet weight
WW
AtroM
[0…-1000%] = -------------------------------------------- *100%
Dry weight
DW
AtroD Dry Content (Wet weight)
The wet weight of the sample is displayed (and printed out) as a percentage of the dry
weight (= DW = final weight = 100%). When the results are printed out, the ATRO dry
content is designated “
AtroD
%" (
A
TRO
D
ry Content) (e.g. 312.56 AtroD %).
Wet weight
WW
AtroD
[100…1000%] = ----------------------------------------- *100%
Dry weight
DW
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100L
100R
AtroM[%]
100L% (Loss Content)
100R% (Residual Content)
%AtroM (Atro Moisture Content)
%AtroD (Atro DryContent)
AtroD
[%]
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