162
Filters & Frits
Part No. Description
Porosity
Threads
Includes
Swept Volume*
Pressure Rating
Biocompatible Precolumn Filters
A-355
Solvent Filter Assembly, Biocompatible
2 µm
10-32 Coned
(1) A-700
1.4 µL
5,000 psi (345 bar)
A-356
Solvent Filter Assembly, Biocompatible
0.5 µm
10-32 Coned
(1) A-701
1.3 µL
5,000 psi (345 bar)
A-700
Replacement Frit, PEEK Polymer, ea.
2 µm
—
—
0.74 µL
N/A
A-701
Replacement Frit, PEEK Polymer, ea.
0.5 µm
—
—
0.61 µL
N/A
Biocompatible Inline Filters
A-430 Biocompatible Filter Assembly
2 µm
10-32 Coned
(1) A-429
7.1 µL
6,000 psi (414 bar)
A-431 Biocompatible Filter Assembly
0.5 µm
10-32 Coned
(1) A-428
5.9 µL
6,000 psi (414 bar)
A-428x PEEK Filter End Fittings, Black PEEK body, 10-pk
0.5 µm
10-32 Coned —
5.7 µL
N/A
A-429x PEEK Filter End Fittings, Natural PEEK body, 10-pk
2 µm
10-32 Coned —
6.9 µL
N/A
* Swept volumes include/refect theoretical frit volume values.
BiocompatiblePrecolumnFilters
Pre-assembled with either 0.5 µm or 2 µm porosity frits
Great column protection
Feature PEEK
™
bodies and PCTFE-surrounded PEEK frits
Upchurch Scientifc
®
Biocompatible Precolumn Filters have 0.020”
(0.50 mm) diameter thru-holes and 8° distribution cones for minimal
bandspreadingandmixing. Thebodiesof theseflters aremanufactured
frombiocompatible PEEK polymer and are pressure rated to 5,000 psi
(345 bar). These flters are designed for usewith 1/16”OD tubing, which
can be connected to these flters using standard Fingertight fttings.
A-355
PEEK Precolumn Filter
0.62”
(1.57 cm)
0.94”
(2.39 cm)
A-700
2 µm PEEK frit
A-356
PEEK Precolumn Filter
0.62”
(1.57 cm)
0.94”
(2.39 cm)
A-701
0.5 µm PEEK frit
A-430
Biocompatible
Analytical Inline Filter
End ftting with
100% PEEK frit
Stainless steel
body
End ftting
0.99”
(2.51 cm)
0.56”
(1.42 cm)
Biocompatible Inline Filters
0.5 µm and 2 µm versions available
Features 100% PEEK fow path
Upchurch Scientifc A-430 and A-431 Inline Filters consist of a stainless
steel body and two PEEK end fittings, one with a built-in 2 µm or
0.5 µm PEEK frit. Both flters are pressure rated to 6,000 psi (414 bar),
with maximum recommended fow rates of 25 mL/min for the A-430
Filter and 10 mL/min for the A-431 Filter. And, you get the added
beneft of biocompatibility since all wetted surfaces are PEEK. When
you need to replace the frit, simply dispose of the end ftting that
contains the frit and replace it with a new one. The end fttings have
10-32 female ports to connect 1/16” OD or smaller tubing using
standard Fingertight fttings.
Precolumn and Inline Filters
Increase the Life of Your Column
Why use a Precolumn Filter when there is a frit at the head of the column
itself? Changing the column frit is extremely diffcult to do without disturbing
the column packing. A precolumn flter provides relatively inexpensive
insurance against column damage, and changing its frit is easy. A Precolumn
Filter placed between the sample injection valve and the HPLC column
protects the column from particles originating in the sample and from pump
and valve seal wear.
Application Note
Top Seller
See starred products
What’s the Difference Between Precolumn & Inline Filters?
You may have noticed that the bodies of Precolumn and Inline Filters look
similar, and as such, you may have wondered what the differences are.
Because Precolumn Filters, by defnition, are typically placed in a volume-
sensitive area immediately preceding the column, these flters usually feature
smaller thru-holes, smaller frit diameters, and lower overall internal volumes.
In contrast, Inline Filters are often placed where the internal volume is not as
critical and where longer life and less fuid restriction is more important.
Note
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