chromatographic column

chromatographic column 1,high surface separate; 2.high carbon content 3.good keep ability

Bonded phase	Bonded-phase structure	Grain size	aperture	specific surface area	Load carbon	PH range
Pntulips BP-C18		3um,5um,10um	120 Â	300m2/g	17%	1.5~9.5
Pntulips QS-C18		3um,5um,10um	120Â	300m2/g	15%	1.5~9.5
Pntulips BP-C8		3um,5um,10um	120Â	300m2/g	10%	1.5~9.5
Pntulips BP-C4		3um,5um,10um	120Â	300m2/g	7%	1.5~9.5
Pntulips BP-NH2		3um,5um,10um	120Â	300m2/g	4%	2.0~9.0
Pntulips Silica	Not bonding	3um,5um,10um	120Â	300m2/g	0%	1.0~8.0
Pntulips BP300A-C18		5um	300Â	100m2/g	8%	1.5 ~9.5

It’s highly pure spherical silicagel padding ,lowest metal impurity content ,reduce the complexing effect of some metal chelate on the silicagel matrix .The surface of this silicagel consists of particular silicon hydroxy group .it’s high coverage ratio of silane .it’s hard to hydrolyze or resolve on the terms of high or low PH condition. It can work steadily  on the terms of PH=1.5~9.5 .as it’s high carbon content, little surface polarity ,lowest chemical purity ,high surface separate effect to avoid the adverse  trailing phenomenon came from reaction with acidic silicon hydroxyl.

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