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820011

TSKgel® VMpak-25 (7 µm) HPLC Columns

L x I.D. 5 cm × 2 mm, ammonium ion, quaternary phase

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UNSPSC Code:
41115711

$1,160.00

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Product Name

TSKgel® VMpak-25 HPLC Column, phase ammonium ion, quaternary, L × I.D. 5 cm × 2 mm, 7 μm particle size

material

stainless steel

product line

TSKgel®

manufacturer/tradename

Tosoh 20011

parameter

≤0.5 M salt concentration
0-100% organic solvent
0.22 mL/min flow rate
10-80 °C temperature
20 bar max. pressure

technique(s)

HPLC: suitable

L × I.D.

5 cm × 2 mm

matrix

hydroxylated methacrylic polymer

matrix active group

ammonium ion, quaternary phase

particle size

7 μm

operating pH

2-12

separation technique

mixed mode

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General description

TSKgel® VMpak-25 columns are specialty columns for the analysis of basic drugs that are often difficult to retain with good peak shape on alkyl-bonded reversed phase columns. The packing material in TSKgel VMpak-25 columns is a hydrophilic vinyl polymer gel (7 μm), similar to that in TSKgel Alpha-2500 size-exclusion columns, although the column dimensions are more appropriate for non-SEC applications. Depending on the mobile phase composition, compounds will be retained by a combination of reverse phase and cation exchange on residual carboxylic acid groups.

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TSKgel is a registered trademark of Tosoh Corporation

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