Carbohydrate Membrane Desalter
The Dionex CMD-I Carbohydrate Membrane Desalter is a cation-exchange membrane device that removes sodium ions from the eluent stream after oligosaccharide detection.
This device exchanges >99% of eluent sodium ions (up to 0.35 M at 1.0 mL/min) for hydronium ions, generating dilute acetic acid that can then be quantitatively removed by vacuum evaporation.
The CMD-I automatically reduces the eluent pH and removes sodium ions online following high pH anion-exchange chromatography with pulsed amperometric detection (HPAE-PAD). HPAE-PAD detects carbohydrates at low picomole levels with good recoveries (75-100%) without the need for derivatisation.
At high pH, and at ionic strengths up to 0.25 M sodium acetate, neutral and charged oligosaccharides are resolved on the basis of branch, linkage, and positional isomerism using a CarboPac PA-100 column.
The postcolumn use of the CMD-I eliminates the need for dialysis steps and minimises sample handling before subsequent MS or enzymatic analyses of HPAE-PAD purified oligosaccharides.
Phone: 07 3105 5000
Bio-Rad Laboratories has launched the ddPCR KRAS Screening Multiplex Kit, the latest...
Rivzman Solutions presents a tool for the calibration of what is claimed to be the world's...
UltraFlux RT is a clear polyolefin film suitable for real-time PCR.