Error Limits (Nominal Volume, Partial Volume) - BRAND Dispensette III Instrucciones De Manejo

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.
Error limits Dispensette
Nominal volume
ml
0,5
1
2
5
10
25
50
100
* A = Accuracy, CV = Coefficient of Variation
Partial volume
The percentage values for A and CV are relative to the nominal volume (V
and must be converted for partial volumes (V
V
N
A = · A
V
T N
T
e.g. volume
V 25.0
N
V = 50% N 12.5
T
V = 10% N 2.5
T
* A = Accuracy, CV = Coefficient of Variation
Note:
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).
®
A* ≤ ±
% µl
1.0 5
0.5 5
0.5 10
0.5 25
0.5 50
0.5 125
0.5 250
0.5 500
).
T
A* ≤ ±
% µl
0.5 125
1.0 125
5.0 125
CV* ≤
% µl
0.2 1
0.1 1
0.1 2
0.1 5
0.1 10
0.1 25
0.1 50
0.1 100
)
N
CV* ≤
% µl
0.1 25
0.2 25
1.0 25
Error Limits
20 °C
!
Ex
Type Digital • Easy
Calibration is manufac-
tured under U.S. Patent
5,957,330.
45