Chromolith® RP-18 Endcapped 10-4.6 Guard Cartridge Kit, 130 Å, 2 μm, 4.6 x 10 mm - 151471 *OBSOLETE*

Update September 2018 - This kit is no longer available for purchase, we recommend the following items as replacement:

• Chromolith® RP-18 endcapped, guard column, 4,6×10 mm Catalog Number: 1.51452.0001
• Chromolith® guard cartridge holder, 4,6×10 mm Catalog Number: 1.52033.0001

Chromolith® RP-18 Endcapped 
Inner Diameter (I.D.) 4.6 mm
Length: 10 mm
Pack Size: 1 starter kit with holder and 3 guard cartridges

Although the monolithic columns are well-known for their robustness and longevity, guard columns are available to protect these analytical columns even further. The guard columns are suitable for reversed-phase chromatography since they are chemically modified with hydrophobic n-octadecyl (C18) groups on the surface of the monolithic silica rod. A guard column directly in front of the main column protects the column against contamination of a chemical or mechanical nature. Guard columns should be frequently changed in order to avoid excessive accumulation of impurities. The monolithic guard columns are very easy to use. Due to the general benefits of the monolithic technology and the easy handling the Chromolith® guard columns, they are also popular for the protection of classical packed columns.

The cartridge kit is the starter kit which includes the guard cartridge holder. The guard cartridges are available in two different lengths: 5 mm and 10 mm.

Benefits

• High throughput at high flow rates with the best overall column quality
• The possibility of flow gradients
• Added column performance by column coupling
• A rigid monolithic structure for a longer lifetime
• Lower matrix sensitivity
• Specifications of Chromolith® RP-18 endcapped

Specifications:

Silica type: High-purity
Particle size: Monolithic
Macropore size: 1.5 μm (2 mm i.d. columns) 2 μm (25, 10, 4.6 and 3 mm i.d. columns)
Mesopore size: 13 nm (130 Å)
Pore volume: 1 mL/g
Total porosity: > 80%
Surface area: 300 m2/g
Surface modification: RP-18 endcapped
Carbon content: 18%