14
Edition 1.-4.03
8.
Chemical compatibility
8.1
Different aerosols and vapours from volatile and hazardous agents can have a dam-
aging effect on the specific parts of the units. Please see below for
FTA-1
and
FTA-
2i
material compatibility tables 1 and 2 with different common laboratory chemicals.
It is required to use the
FTA-2i
pump’s exhaust (fig. 7/3) by connecting it to the means
of required filtration through a tube or, alternatively, by placing the unit in a fume hood
when working with volatile and hazardous agents.
FTA-1
does not have pump ex-
haust connector available; therefore, it is obligatory to place the unit in a fume hood.
It is suggested to test the compatibility of related parts to a specific chemical prior to
extensive use. Biosan does not warrant that the data in the tables is correct or com-
prehensive and that any material is fit for any purpose.
8.2
Resistance grades used in tables
:
•
1
(Excellent)
– at ambient temperature and pressure, the material should not be affected.
•
2
(Good)
– the material is slightly affected but not to the point of being unsuitable.
•
3
(Fair)
– a degree of reaction that is generally considered unsuitable and should not
be used.
•
4
(Severe) indicates that the material should not be used under any circumstances.
Table 1. FTA-1 chemical resistance chart
Parts
Material
For
malde
-
h
y
d
e
C
H
2
O
A
c
e
tic
a
c
id
C
2
H
4
O
2
H
y
d
ro
c
h
lor
ic
a
c
id
H
C
l
S
o
d
ium
h
y
d
ro
x
ide
N
a
OH
E
th
a
n
o
l
C
2
H
5
OH
A
c
e
to
n
e
(CH
3
)
2
CO
Tubing
Silicone
2
2
3
3
1
3
Bottle 1L
Glass
1
1
1
1
1
1
Lid
Polypropylene
1
1
1
1
1
1
Lid seal
NBR
2
3
2
2
2
4
Fittings
Polypropylene
1
1
1
1
1
1
Quick couplings
Ertacetal POM
1
1
3
1
1
1
Housing
Polystyrene
4
3
2
1
2
3
Pump head housing
Polycarbonate
1
2
4
4
2
4
Pump head membrane
EPDM
2
1
2
1
1
1
Pump valve
EPDM
2
1
2
1
1
1
Filter membrane
PTFE
1
1
1
1
1
1
