Brandtech-scientific Dispensette III Manual do Utilizador descarregar pdf (Página 45)

20 °C

Type Digital • Easy

Calibration is manufac-

tured under U.S. Patent

5,957,330.

English

Error Limits

Error limits related to the nominal capacity (= maximum volume) indicated on

the instrument, obtained when instrument and distilled water are equilibrated

at ambient temperature (20 °C/68 °F). Testing takes place according DIN EN

ISO 8655-6 with a completely filled instrument and with uniform and smooth

dispensing.

Note:

* A = Accuracy, CV = Coefficient of Variation

Error limits Dispensette

The error limits are well within the limits of DIN EN ISO 8655-5. The maxi-

mum error limit for a single measurement can be calculated EL = A + 2 CV

(e.g. for volume 25 ml: 125 µl + 2 x 25 µl = 175 µl).

Nominal volume

A* ≤ ±

µl

CV* ≤

µl

0,5 1.0 5 0.2 1

1 0.5 5 0.1 1

2 0.5 10 0.1 2

5 0.5 25 0.1 5

10 0.5 50 0.1 10

25 0.5 125 0.1 25

50 0.5 250 0.1 50

100 0.5 500 0.1 100

Partial volume

The percentage values for A and CV are relative to the nominal volume (V

)

and must be converted for partial volumes (V

= · A

e.g. volume A* ≤ ±

% µl

CV* ≤

% µl

25.0 0.5 125 0.1 25

= 50% N 12.5 1.0 125 0.2 25

= 10% N 2.5 5.0 125 1.0 25

* A = Accuracy, CV = Coefficient of Variation

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 115 116

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Brandtech-scientific Dispensette III Manual do Utilizador Página 45

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