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How old is my pipette? |
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All Gilson pipettes carry a serial number which identifies the pipette and the date of manufacture (see example below).
example of a serial number A10369H
The first letter represents the year of manufacture.
The number is the individual production number.
The last letter corresponds to the month of manufacture.
Letter
A
B
C
D
E
G
H
J
K
L
M
N
P
Q
R
S
T
U
W
X
Y
Z
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Year
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
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Letter
A
B
C
D
E
G
H
J
K
L
M
N |
Month
January
February
March
April
May
June
July
August
September
October
November
December
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What are the main causes of leaks? |
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How do
organic solvents cause leaks? |
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When an organic solvent is used with an air-displacement pipette,
leaks may occur. These leaks are caused by the difference
between the vapor pressure of the solvent and pressure of
the air cushion between the piston and the sample.
Solution:
- Use a positive-displacement pipette because it has no
air cushion.
- If you are using an air-displacement pipette, saturate
the air cushion of your pipette with solvent vapor by aspirating
and distributing solvent repeatedly. The leak will
stop when pressure equilibrium is reached.
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How can I
prevent piston corrosion |
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After contact
with corrosive liquids, a piston should be cleaned with alcohol and a soft
tissue. Take care to avoid shocks or scratches.
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Where do I send my pipettes for repair? |
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Send your
pipettes in for repair to:
Mandel
Scientific Company Ltd
2 Admiral Place, Guelph, Ontario, N1G 4N4
Remember to enclose the Pipette Service Form with your pipettes when shipping.
Please note: To ensure the safety of all personnel, pipettes MUST be free of biological and radioactive hazards.
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Why do I need
a pipette holder? |
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To prevent
corrosion, contamination or breakage. Always store your pipettes
vertically to prevent liquids from running inside the shaft of the
pipette. Do not leave your pipette lying on the workbench where it
can come into contact with chemicals or fall off and break.
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How do I
prevent aerosol contamination? |
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Use a Pipetman pipette with Diamond sterilized filter
tips when faced with at least two of the following situations
at the same time:
- working in sterile conditions
- pipetting aqueous samples
- avoiding cross-contamination
Use a Microman pipette with sterilized capillaries
and pistons when faced with at least two of the following
situations at the same time:
- working in sterile conditions
- pipetting viscous samples
- avoiding cross-contamination |
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How do I book
a Pipette Clinic or Seminar? |
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For more information on Pipette
Clinics and Seminars please contact a Manual Liquid Handling Service
Representative at:
Mandel Scientific Company Inc.
email: service@mandel.ca
Toll Free: 800-265-8356
Fax: 519-763-2005
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What are the
best replacement parts for my Gilson Pipettes? |
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Only genuine Gilson replacement
parts should be used for your Gilson pipettes. Mandel is the
exclusive Canadian agent for Gilson S.A. (see our Pipette
Parts page for more information)
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What are
published specifications? |
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Specifications are established
by the manufacturer. They guarantee, in terms of accuracy and
precision, the performance of all pipettes of a given brand and a given
model at a certain volume setting.
Accuracy - is the ability of a
measuring instrument to give responses close to a true value. Precision - is the ability of an
instrument to provide closely similar responses (measurements). Precision
is also referred to as repeatability and/or reproducibility.
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The tips do
not fit well, what should I do? |
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Always use Gilson calibrated
pipette tips for Gilson pipettes.
Push upward on the tip-ejector to make sure
it is positioned properly.
Clean the tip holder with alcohol. If it is
worn or has been chemically attacked, order a new part.
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