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18 Monitoring volumes
HandyStep® touch, HandyStep® touch S 997486
Operating manual
99
18 Monitoring volumes
18.1 Testing instructions (SOP)
https://www.brand.de/sop
For additional information Calibration, see Calibra-
tion,p.99.
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
volume 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
vertically for approx. 10 s: If a drop forms, then follow the instructions in the following table.
Tip is not recognized No coding or coding dam-
aged or tip not inserted cor-
rectly
Insert a new tip or reinsert,
select the volume size
Tip drips Tip leaky Insert a new tip
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).
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