BRAND HandyStep touch, Operating Manual

Page: 88 / 234

88
Possible malfunction Cause Solution
Tip drips Tip leaky Insert a new tip
Tip is not recognized No coding or coding damaged or tip
not inserted correctly Insert a new tip or reinsert, select
the volume size
Calibration
If the leak test (see „Monitoring volumes“ → 87) has been successfully
completed, a gravimetric measurement can determine if the device is within
the limits defined by ISO 8655. The test method required for this is descri-
bed in the testing instructions (SOP).
Technical data
Accuracy table
The measurements were optained with PD-Tip II by BRAND.
Distilled water was used as the test liquid.
Accuracy A*
≤
± % Coefficient of variation (CV)
≤ %
PD-Tip Volume range Volume increments
Nominal
volume
50 % 10 % 1%
Nominal
volume
50 % 10 % 1 %
0.1 1 µl ... 100 µl 1 µl ...100 µ 0.1 µl 1 1 1.6 8 0.5 1 2 12
0.5 5 µl ... 500 µl 5 µl ... 100 µl
100 µl ... 500 µl
0.1 µl
1 µl
0.9 0.9 1 5 0.3 0.6 1 5
1 10 µl ...1 ml 10 µl ... 1 ml 1 µl 0.6 0.9 1 5 0.3 0.5 0.8 4
1.25 12.5 µl... 1.25 ml 12.5 µl ... 100 µl
100 µl ... 1000 µl
1 ml ... 1.25 ml
0.5 µl
1 µl
10 µl
0.6 0.6 0.9 5 0.2 0.5 0.7 4
2.5 25 µl ... 2.5 ml 25 µl ... 1000 µl
1 ml ... 2.5 ml
1 µl
10 µl
0.5 0.6 0.7 3.5 0.15 0.3 0.6 3
5 50 µl ... 5 ml 50 µl ... 1000 µl
1 ml ... 5 ml
1 µl
10 µl
0.5 0.5 0.7 3.5 0.15 0.4 0.7 3
10 100 µl ... 10 ml 100 µl ... 10 ml 10 µl 0.4 0.5 0.7 3.5 0.15 0.5 0.8 4
12.5 125 µl ... 12.5 ml 125 µl ... 1000 µl
1 ml ...10 ml
10 m ...12.5 m
5 µl
10 µl
100 µl
0.5 0.5 0.8 3.5 0.15 0.6 1.4 6.5
25 250 µl ... 25 ml 250 µl ... 10 ml
10 ml ... 25 ml
10 µl
100 µl
0.5 0.5 0.6 3 0.15 0.3 1.0 6
50 500 µl ... 50 ml 500 µl ...10 ml
10 ml ... 50 ml 0 µl
100 µl
0.5 0.5 0.6 3 0.15 0.4 1.2 9
The nominal volume is the maximum volume printed on the PD-Tip.
The tolerances specified in ISO 8655 are not exceeded.