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Metrohm 746 VA Trace Analyzer User Manual

Page 316

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5.6.4 CALCULATION

746 VA Trace Analyzer / 747 VA Stand

5-165

Parameter

Range; Default value / Meaning

Conversions of standard formulae
The following table shows a few examples for the conversion of the
four possible standard formulae (see above):

S0

Desired result unit

Formula

Res.unit

L

g/L with automatic prefix

mg/L

µ

g/L

ng/L

volume ppm

volume ppb

Standard formula
Standard formula

* 1e+03

Standard formula

* 1e+06

Standard formula

* 1e+09

Standard formula

* 1e+03

Standard formula

* 1e+06

#g/L
mg/L
ug/L
ng/L

ppm
ppb

g

g/g with automatic prefix

mg/g

µ

g/g

ng/g

weight ppm

weight ppb

Standard formula
Standard formula

* 1e+03

Standard formula

* 1e+06

Standard formula

* 1e+09

Standard formula

* 1e+06

Standard formula

* 1e+09

#g/g
mg/g
ug/g
ng/g

ppm
ppb

Res.unit

8 characters;

Result unit

Designation of the result unit for final result (text-only entry).

If

#

is entered as the first character, the result calculated with the

formula is automatically provided with a prefix (m,

µ

, n, etc.)

(e.g. 5.64

µ

g/L for 5.64ú10

–6

g/L).

On the transfer of standard formulae with the softkey

method>

, either

#g/L

or

#g/g

is entered in this field, depending on the

entry of

S0

(see Standard formulae).

Sign.dig.

1...5; 5

Significant digits

Number of significant figures for the final result.