Shim-pack Velox LC Columns - Features

Combining highly efficient core shell particle technology with a wide range of surface chemistries provides you with the best opportunity for optimal resolution. With different chemistry characteristics, Shim-pack Velox columns are suitable for use in a wide variety of applications and challenging separations.

		SP-C18	C18	Biphenyl	PFPP	HILIC
USP Classification		L1	L1	L11	L43	L3
Ligand type		Sterically protected C18	C18	Biphenyl	Pentafluorophenyl propyl	None
Particle Size (μm)		1.8, 2.7, 5	1.8, 2.7, 5	1.8, 2.7, 5	1.8, 2.7, 5	2.7
Pore size (Å)		90	90	90	90	90
Surface Area	1.8 μm	125 m2/g	125 m2/g	125 m2/g	125 m2/g	-
	2.7 μm	130 m2/g	130 m2/g	130 m2/g	130 m2/g	130 m2/g
	5 μm	100 m2/g	100 m2/g	100 m2/g	100 m2/g	-
Carbon Load	1.8 μm	7 %	9 %	7 %	4 %	-
	2.7 μm	7 %	7 %	7 %	4 %	N/A
	5 μm	5 %	5 %	5 %	3 %	-
End-Cap		No	YES	YES	No	No
pH range		1.0-8.0	2.0-8.0	1.5-8.0	2.0-8.0	2.0-8.0
Max Pressure	1.8 μm	100 MPa*	100 MPa*	100 MPa*	100 MPa*	-
	2.7 μm	60 MPa	60 MPa	60 MPa	60 MPa	60 MPa
	5 μm	40 MPa	40 MPa	40 MPa	40 MPa	-

Column particle sizes and column volumes affect chromatography results significantly if the column configuration does not match　the LC system. As column particle size is reduced, or the column volume (ID and/or the length of the columns) decreases, the necessity for a lower dispersion system is increased.
Choosing the optimal column configuration for your LC system allows you to achieve improved chromatography. 
The following table summarizes the starting recommendations of column configuration for each LC system.

We understand that lot to lot consistent performance of columns is required to maximize your laboratory performance. 
From one lot to the next, every Shim-pack Velox column you purchase will perform consistently.