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4.6.3.1 Calculation Formula
The appropriate calculation formula is selected on the «
Formula selection
» submenu (Fig. 66).
Fig. 66
The following calculation formulae are available for EQ and EP:
Formula for linear and dynamic
titration to EQ1
Formula for titrations to
End-Point (EP 1 and EP2)
Information
No formula
No result will be determined.
(EQ1-B)*T*M*F1/(W*F2)
(EP1-B)*T*M*F1/(W*F2)
Formula for calculating the
concentration of a sample taking into
account a blank value in terms of ml.
Direct titration to one EQ or EP1 (ex.:
chloride, p or m value)
(B
–EQ1)*T*M*F1/(W*F2)
(B-EP1)*T*M*F1/(W*F2)
Formula for calculating the
concentration of a sample taking into
account a blank value in terms of ml.
Reverse titration (examples. CSB,
saponification number)
(B*F3
–EQ1*F1)*T*M/(W*F2)
(B*F3
–EP1*F1)*T*M/(W*F2)
Formula for calculating the
concentration of a sample taking into
account a blank value, including a
multiplicative factor.
Back titration.
(W*F2)/(EQ1-B)*M*F1)
(W*F2)/(EP1-B)*M*F1)
Formula for calculating a titer (T)
of a titration solution.
(W*F2)/(EQ1-B)*M*T*F1)
(W*F2)/(EP1-B)*M*T*F1)
Formula for calculating the
concentration of a sample taking into
account a blank value in ml.
Direct titration to one EQ or EP1.
(W*F2)/(B-EQ1)*M*T*F1)
(W*F2)/(B-EP1)*M*T*F1)
Formula for calculating the
concentration of a sample taking into
account a blank value in ml. Back
titration (NCO-value, Epoxy-number).
The abbreviations used here have the following meaning:
ml:
Total consumption, e.g. for pH Stat
S:
Slope in ml/time (pH Stat)
EQ:
Consumption at the equivalence point 1 and 2 in ml
EP:
Consumption at the end point in ml
B:
Blank value in ml. Mostly determined by way of titration
T:
Titer of the titration solution (e.g. 0.09986)
M:
Mol; mol- or equivalence weight of the sample (e.g. NaCl 58.44)
F1 - F5
Factor 1 - 5 conversion factors
W
“Weight“, weighed-in quantity in g or volume in ml
