Maxi-Clean™ IC SPE
Maxi-Clean™ IC SPE
Eliminate Matrix Interferences Before Ion Analysis
The most difficult part of many ion chromatography applications is eliminating interfering components from the sample matrix. These interferences may co-elute or mask peaks of interest, overload the
column, or shorten the column life by binding irreversibly to the column packing. S*PURE unique IC SPE devices eliminate many of these interferences.
Each polypropylene device contains 0.5mL or 1.5mL of purified polystyrene resin, contained by 20µm polyethylene frits. The resin is functionalized to retain specific types of components from the sample.
Maxi-Clean™ cartridges can be processed with any luer hub syringe.
General Procecure
- Precondition the Device. Pass 5-10mL of IC grade water through the device (for IC-RP, pass 5-10mL HPLC grade methanol through first, followed by IC grade water). This removes interstitial contaminants and wets the packed bed. For trace analysis work, repeat the rinsing procedure until the eluant is free from interferences.
- Load the Sample. Load the entire sample at 1mL/minute or less. The total amount of material to be removed from the sample should not exceed the device capacity and preferably should be below 50% of total capacity. Discard the first 1mL of eluate. Collect the remaining eluate for analysis.
Seven Chemistries Solve a Variety of Specific Problems
IC-RP provides a reliable method for removing surfactants, organic acids, proteins and other organic substances.
IC-H and IC-OH adjust the pH of samples prior to injection. The recovery of weakly ionized anions such as nitrite and phosphate may be poor after pretreatment with IC-H.
IC-Ag and IC-Ba use selective precipitation reactions to remove halides or sulfates, respectively. Low levels of other anions may be lost during pretreatment if the concentration of halides or sulfates is high.
IC-Na removes cations from samples without changing the sample's pH.
IC-Chelate removes polyvalent cations and transition metals from the sample.
Mixed-Mode RP-OH simultaneously removes hydrophobic components and increases the pH of acidic samples.
Mixed-Mode RP-H simultaneously removes hydrophobic components and decreases the pH of alkaline samples.
