Xylem Si Analytics TitroLine 5000 Mode D'emploi page 115

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
No formula
(EQ1-B)*T*M*F1/(W*F2)
(B–EQ1)*T*M*F1/(W*F2)
(B*F3–EQ1*F1)*T*M/(W*F2)
(W*F2)/(EQ1-B)*M*F1)
(W*F2)/(EQ1-B)*M*T*F1)
(W*F2)/(B-EQ1)*M*T*F1)
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
"Weight", weighed-in quantity in g or volume in ml
W
Formula for titrations to
End-Point (EP 1 and EP2)
(EP1-B)*T*M*F1/(W*F2)
(B-EP1)*T*M*F1/(W*F2)
(B*F3–EP1*F1)*T*M/(W*F2)
(W*F2)/(EP1-B)*M*F1)
(W*F2)/(EP1-B)*M*T*F1)
(W*F2)/(B-EP1)*M*T*F1)
Information
No result will be determined.
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)
Formula for calculating the
concentration of a sample taking into
account a blank value in terms of ml.
Reverse titration (examples. CSB,
saponification number)
Formula for calculating the
concentration of a sample taking into
account a blank value, including a
multiplicative factor.
Back titration.
Formula for calculating a titer (T)
of a titration solution.
Formula for calculating the
concentration of a sample taking into
account a blank value in ml.
Direct titration to one EQ or EP1.
Formula for calculating the
concentration of a sample taking into
account a blank value in ml. Back
titration (NCO-value, Epoxy-number).
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