TSKgel Alpha-M
The TSKgel Alpha-M mixed bed column has an extended linear calibration range and is suitable for samples with a broad molar mass distribution, as well as samples with unknown molar mass.
This column is packed with rigid, porous polymer beads which show minimal shrinkage or swelling in polar organic solvents (methanol, acetonitrile, DMSO, isopropanol, THF, and HFIP). The Alpha-M column is stable in a wide variety of organic solvents at concentrations up to 100%.
The main application area for the TSKgel Alpha-M column is the analyses of polymers that are soluble in polar organic solvents greater than 10 x 10^6 Da. Examples include cellulose derivatives, polyimide, and sodium dodecylsulfate (all in 10 mmol/L LiBr in DMF), cleansing gel in methanol, and degree of saponification of polyvinylalcohol in hexafluoroisopropanol (HFIP).
Calibration curves of TSKgel Alpha columns
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Column: TSKgel Alpha columns, 7.8 mm ID × 30 cm
Mobile phase: A. H2O
B. MeOH containing 10 mmol/L LiBr
C. DMF containing 10 mmol/L LiBr
Flow rate: 1.0 mL/min
Detection: RI
Temperature: A. 25 °C B. 25 °C C. 40 °C
Samples: A, B: polyethylene glycol (PEG) and polyethylene oxide (PEO) standards
C. polystyrene (PS) standards
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