Diameter : 2.0 mm, 3.0, 4.0 and 4.6 mm ID
Length : 13 mm, 20, 30, 33, 40, 50, 60, 75, 100, 125, 150, 200, 250 and 300 mm
2.0 ID (mm) : 200 µl/min
3.0 ID (mm) : 500 µl/min
4.0 ID (mm) : 1 ml/min
4.6 ID (mm) : 1 - 1.5 ml/min
For microbore and analytical columns Dr. Maisch provides a High Quality and Cost Effective Cartridge GUARD system:
- The system consists of a HOLDER with replaceable GUARD CARTRIDGES
- The cartridges are High Pressure packed (plates) with a Stationary Phase of Choice
- Dr. Maisch has a large number of phases available (see catalogue or pricelist)
- Guards are available in lengths of 5, 10 and 20 mm and diameters up to 4.6 mm.
The purpose of a GUARD or PRE-COLUMN is mainly to retain (”scavenge”) strong-bonding components. It does not strictly need to consist of the same stationary phase as the main column that is used for the separation.
A good strategy is to use a stationary phase that has less retention than the separation column phase that is used.
For instance on a C18 separation columns the pre-column can be a C18 material with a lower CARBON CONTENT, a C8, or C4 material.
UNIVERSAL Stand-Alone holder
Female fittings on both ends. The stand-alone (also named INDIRECT) holder is connected by a column connector or SS/PEEK tubing. Examples:
Holder for 0.3 – 1.0 mm ID Cartridges:
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