General, chemical type or category of compound to be separated.
The type of resin that is packed inside the column tube.
United States Pharmacopeia HPLC column designation.
Size (in micrometers) of the polymer or silica bead packed inside the column tube.
Inside diameter (in millimeters) of the column tube.
Length of the column tube (in millimeters).
Easy Ion Determination
Better than Wet Chemical Methods
The ion capacity of the ion-exchanger is determined by the number of functional groups per unit weight of the stationary phase. The most commonly used unit is milliequivalents of charge per gram of dry packing, or milliequivalents per ml of wet packing. In the second case it is customary to state the type of counter-ion present in the stationary phase, since it affects the degree of swelling of the packing and hence its volume. The ion-exchange capacity of a stationary phase plays a significant role in determining the concentrations of competing ions used in the mobile phase for elution. Higher capacity stationary phases generally require the use of more concentrated mobile phases, which are problematic when high performance ion-chromatography is concerned, due to the use of conductometric detectors, which cannot function well with high salt concentrations. Typical ion-exchange capacity in IC is 10-100 mequiv/g.
Long Column Life
Use for EPA 300.0PRP-X110 columns can be used in the suppressed conductivity mode for determination of inorganic anions as required in EPA 300.0 Part A (bromide, chloride, fluoride, nitrate, nitrite, phosphate, sulfate) see Application #356.
Polymeric anion exchange packing for separation of inorganic and organic anions from 20 ppb to 20 ppm