Biohit PROLINE Prospenser - Page 30

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Calculations (for the nominal volume)
Mean value x
_
=
∑ x
i
x
i
= results of weighings
n n = number of weighings
Mean volume V
_
= x
_
· Z
Z = correction factor
(e. g. 1.0029 µl/mg at 20 °C, 1013 hPa)
Accuracy
A% =
V
_
- V
0
· 100 V
0
= nominal volume
V
0
Standard deviation Coeffi cient of variation
s = Z ·
√
∑ (x
1
- x
_
)
2
CV% =
100 s
n - 1
V
_
Berechnung (für Nennvolumen)
Mittelwert x
_
=
∑ x
i
x
i
= Wäge-Ergebnisse
n n = Anzahl der Wägungen
Mittleres Volumen V
_
= x
_
· Z
Z = Korrekturfaktor
(z. B. 1,0029 µl/mg bei 20 °C, 1013 hPa)
Richtigkeit
R% =
V
_
- V
0
· 100 V
0
= Nennvolumen
V
0
Standardabweichung Variationskoeffi zient
s = Z ·
√
∑ (x
1
- x
_
)
2
VK% =
100 s
n - 1
V
_
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