Metrohm viva 1.0 Manual - Manual (Page 884)

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872 ￭￭￭￭￭￭￭￭
viva 1.0
873) and another index Y for the replications. Replication refers to an
identical repetition of a measurement.
Sample amount
Amount of sample for which the default results are to be calculated. The
sample amount can be entered as a volume or a weight or with any unit
(e.g. Number).
The sample amount is usually entered as a volume (in L, mL or µL) for the
brightener determination, and the result is calculated per L of bath
sample. The procedure for the determination and calculation depends on
whether undiluted or diluted samples are used.
Undiluted sample Diluted sample
￭ Procedure
Undiluted sample is added to the measur-
ing vessel. ￭ Procedure
The sample is diluted with a dilution solu-
tion before the determination. Of the total
volume of sample and dilution solution (=
Dilution volume), a part (= Analytical
volume) is then added to the measuring
vessel.
￭ Sample addition with ADD SAMPLE
The sample volume (= Sample amount) is
added to the measuring vessel with the
ADD SAMPLE command. ￭ Sample addition with ADD SAMPLE
The Analytical volume is added to the
measuring vessel with the ADD SAMPLE
command.
￭ Result calculation
CONC = CONCM * (VTOT / VSMPL)
CONC = concentration in the sample
CONCM = concentration in the measuring
vessel
VTOT = total volume in the measuring ves-
sel
VSMPL = sample amount
￭ Result calculation
CONC = CONCM * (VTOT / VSMPL) *
(VDIL / VANAL)
CONC = concentration in the sample
CONCM = concentration in the measuring
vessel
VTOT = total volume in the measuring ves-
sel
VSMPL = sample amount
VDIL = dilution volume
VANAL = analysis volume