Kinesis TELOS® Specialty SPE Column, carboxylic acid (CBA), 1 g sorbent, 6 mL; 30/pk

20 µm polyethylene top and bottom frits

CBA (Carboxylic Acid) is excellent for extracting strongly basic and polybasic analytes from aqueous sample matrices. The weak cation exchange sorbent with pKa 4.8, allows analytes to be eluted by eliminating the charge on the sorbent at low pH. The sorbent is supplied in the free acid form. Columns are made of polypropylene and feature Luer-slip outlet.