Monitoring Volumes; Testing Instructions (Sop); Leak Test Of The Pd Tip; Calibration - BRAND HandyStep touch Instrucciones De Manejo

18 Monitoring volumes

18.1 Testing instructions (SOP)

https://www.brand.de/sop

18.2 Leak test of the PD tip

a. Insert a new PD tip.
ð The PD-Tip is recognized automatically or, in the case of compatible dispenser tips, select the vol-
ume size.
b. Change the volume to be dispensed.
c. Fill the PD-Tip.
d. Immerse the PD-Tip into the test liquid. Aspirate liquid at a steady rate. Hold the device down ver-
tically for approx. 10 s: If a drop forms, then follow the instructions in the following table.
Tip is not recognized
Tip drips

19 Calibration

If the leak test (see Monitoring volumes, p. 99) has been successfully completed, a gravimetric mea-
surement can determine if the device is within the limits defined by ISO 8655. The test method re-
quired for this is described in the testing instructions (SOP).

20 Technical data

20.1 Accuracy table

The measurements were carried out with BRAND PD-Tips II.
Distilled water was used as the test liquid.
The nominal volume is the maximum volume printed on the PD-Tip.
The tolerances specified in ISO 8655 are not exceeded.
PD tip Volume range
0.1 ml 1 µl ... 100 µl
0.5 ml 5 µl ... 500 µl
1 ml 10 µl ...1 ml
1.25 ml 12.5 µl ... 1.25 ml 0.5 µl
HandyStep® touch, HandyStep® touch S 997486
For additional information Calibration, see Calibra-
tion, p. 99.
No coding or coding dam-
aged or tip not inserted cor-
rectly
Tip leaky
Accuracy A*
Volume steps Nominal vol-
ume
0.1 µl 1
0.1 µl 0.9
1 µl 0.6
0.6
Insert a new tip or reinsert,
select the volume size
Insert a new tip
± % Variation coefficient VC
≤
50 10 1 Nomi-
% % % nal vol-
ume
1 1.6 8 0.5
0.9 1 5 0.3
0.9 1 5 0.3
0.6 0.9 5 0.2
18 Monitoring volumes
%
≤
50 10 1
% % %
1 2 12
0.6 1 5
0.5 0.8 4
0.5 0.7 4
99
Operating manual