C18 ProteCol HPLC columns

Turn imagination into results

High quality phases and a variety of hardware options provide a perfect match for all your separation needs.

General purpose reverse phase separations.

0.15, 0.3, 1, 2.1, 3, and 4.6 mm ID columns available in 50, 100, 150, 250 mm lengths.

PEEK coated, and PEEKsil^®, column hardware available to reduce non-specific interactions when analyzing compounds with metal chelating activity.

Phase	Specifications	Pore size (Å)	Particle size (μm)	Pore volume (mL)	Surface area	Carbon load %	USP code
C18 Q	Ultra pure silica Fully end capped optimized C18 phases	100	3, 5	1.0 ± 0.1	400 ± 40	16.8	L1
C18 G	Stable in aqueous conditions Reduces non-specific analyte interactions Separates polar compounds pH stability 1 - 9	120 200 300	2.5, 3, 5, 10 3, 5 3, 5	1.0 ± 0.1 1.0 ± 0.1 1.0 ± 0.1	300 ± 40 200 ± 30 100 ± 20	17.1 12.6 6.9	L1 L1 L1
C18 H	Modified bonded phase making it easier to work from low to high pH using the same column Novel chemical bonding ensuring stability under extreme alkaline and acidic conditions pH stability 1 -11	120	5	1.0 ± 0.1	300 ± 40	20.9	L1
C18 P	Polar embedded C18 100% compatible with water pH stability 1 - 9	120	3, 5	1.0 ± 0.1	300 ± 40	14.5	L1