Answer:
ZORBAX Columns with ZORBAX Hardware
Except in special circumstances, you should try to match exactly the guard
column with the same packing and internal diameter as the column you're
trying to protect.
Find the part number and description of the column you have (or are
ordering) on the Agilent web site or in our catalog or column selection guide.
Find the part number and description for a
guard column with the same (or less retentive) packing material. Select the
part number for the appropriate guard column, based on whether the column
is an analytical (4.6 mm, 4.0 mm, 3.0 mm Solvent Saver), narrow-bore (2.1 mm), semi-preparative (9.4 mm) or preparative (21.2 mm) column.
For example, if your column is an analytical column, 4.6 mm x 150 mm,
3.5-micron Eclipse XDB-C8, you should select an XDB-C8 analytical guard
cartridge, with dimensions 4.6 mm x 12.5 mm. If you're using a 2.1-mm i.d. narrow-bore column, select a narrow-bore 2.1 x 12.5 mm guard column. Both of these guard columns use the same hardware kit (820888-901).
ZORBAX PrepHT columns (21.2 mm
i.d.) have their own
integral guard columns and have hardware for the inlet end for use of a guard cartridge and the end fittings. See
Table 1 for several specific examples.
Table 1 Guard Column and Hardware Selection
| Column Description |
Column Part Number |
Guard Column Description |
Guard Part Number |
Guard Hardware Part Number |
Eclipse XDB-C8
4.6 x 150 mm, 3.5-um
analytical column |
963967-906 |
Analytical
4.6 x 12.5 mm
5-um |
820950-926 |
820888-901 |
|
Eclipse XDB-C8
2.1 x 150 mm, 5-um
narrow-bore column |
963967-912 |
Narrow-bore
2.1 x 12.5 mm
5-um |
821125-926 |
820888-901 |
StableBond SB-C18
21.2 x 250 mm, 7-um
PrepHT column |
877250-102 |
PrepHT guard column
17 x 7.5 mm
5-um |
820212-902 |
820444-901
(guard hardware)
820400-901
(end fittings) |
Columns Having the Agilent Designation
For ZORBAX and other manufacturers' columns that are sold in an Agilent
cartridge format, catalog entries are designated by 'AC' in white letters
within a black diamond.
For Agilent cartridge columns you must purchase the guard cartridges
separately in the given packing material. But the guard cartridge holder is
an integral part of the Agilent cartridge column hardware for 2, 3, 4 and 4.6
mm i.d. configurations. The
cartridge hardware kit
consists of two end fittings and two sets of stainless steel collets. When the
cartridge column is used
without a guard column, the inlet end collets are
installed in one direction; when the cartridge column is used
with a guard
column, the collets are installed in the reverse direction to allow the
4 x 4 mm guard cartridge to fit within the inlet column cartridge holder.
Replacement filters may be used to protect the cartridge column from
particulates (part no. 5063-6574 for 4 and 4.6 mm cartridges, part no.
5063-6519 for 2 mm cartridges), but are not required. A mounting tool (part
no. 5021-1846) is also needed for installing the replacement filters, and is
included in the cartridge holder kit (part no. 5021-1845).