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Instructions for Use Sarpette
4.5
Piston change, multi-channel Sarpette
A piston change in multi-channel pipettes, as well as the replacement of other defective parts, should always be
carried out by their local service partner.
5
Faults
Problem
Possible causes
Tip is not fixed
Tip ejector incorrectly positioned
on cone
Unsuitable tips
Piston sticks,
Soiled piston
moves irregularly
Liquid is not
Blocked cone
aspirated
Volumetric unit of pipette incorrectly
assembled
Contaminated protective filter for 5 and
10 ml pipettes
Different
Lack of tightness
liquid level
in tips of
multi-channel pipettes
Instrument does not
Lack of tightness
perform as required
Unsuitable tips
Contaminated protective filter for 5 and
10 ml pipettes
Instrument calibrated incorrectly
Use of the instrument with viscous,
volatile or extremely temperature-
controlled liquids
6
Sterilisation
The design of the Sarpette
M takes into account repeated sterilisation in an autoclave at 121 °C. (20 minutes).
®
For models 5 and 10 ml, remove the protective filter before autoclaving. Place the instrument horizontally in the
autoclave, avoid direct contact with metal. Before use, check that the pipette is dry and completely cooled. For
model 5 and 10 ml, install new protective filter. Check the sealing and performance data regularly, but at least
after 50 autoclaving cycles. Re-tighten the volume unit if loose. A change in the colour of the material as well
as more difficult rotation of the coloured cap may occur after repeated autoclaving. Correct autoclaving and
resulting sterility are the responsibility of the user.
8
M
®
®
M
Solution
Adjust the position of the tip ejector
Use original or compatible tips
Disassemble and clean piston
(also grease 5 and 10 ml pipettes and
multi-channel pipettes)
Dismantling and cleaning
Assemble the lower part according to
the instruction manual
Replace protective filter
Check the fit of the pipette tips
Replace defective cone, PTFE sleeve or
O-ring
Check whether cone, PTFE sleeve or
O-ring is defective
Check compatibility and fit of pipette
tips
Replace protective filter
Perform recalibration
Re-calibrate with appropriate liquid
Instructions for Use Sarpette
7
Calibration
Each Sarpette
®
M was calibrated after production and individually tested. The control certificate supplied with
the pipette contains all data as well as its serial number. The performance data are checked with distilled water
at a constant (± 0.5 °C) room temperature between 20 and 25 °C, in accordance with ISO 8655.
7.1
In-lab calibration
With the Swift-Set calibration system, the pipettes can be quickly and safely adjusted to the correct volume as
follows:
Fig. 12
• Remove the coloured cap (a) from the push button and remove the calibration screw (b).
• Pull off the calibration seal label (c) and set the calibration slide (d) to the position cal using a pipette tip or
pointed object.
• Turn the calibration screw until the average measured volume appears on the digital display without
holding the push button.
• Move the calibration slide back into the lock position, place the coloured cap on the push button.
• After a few piston movements, check the result.
• Stick the recalibration seal label to the calibration slide.
8
Warranty
The Sarpette
®
M is guaranteed against any manufacturing and material defects for the period of time mentioned
in the inspection certificate. Damage resulting from disregard of the operating and safety instructions or
autoclaving at improper temperature as well as colour deviations of the materials are excluded from the warranty.
Repairs and replacement of spare parts do not extend the warranty period. If there are malfunctions that cannot
be rectified according to the above instructions, contact your SARSTEDT contact person.
M
®
Fig. 13
9
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