Specifications GRAM columns

Applicability: Polyurethane, Polyimide, Starches, Celluloses, certain Polyamide, other polar polymers
Eluents: DMF, DMAc, NMP, DMSO
Material: Polyester copolymer network
Maximum Pressure: 50 -120 bar (725 – 1740 psi), depending on porosity
Maximum Temperature: 90° C
Maximum Flow Rate: 2 ml/min (I.D.: 8 mm)
Particle Size: 10 µm
Molecular Weight Range: 100 to 50 000 000 Da

Standard Columns (others on request)   

Separation Range [Da]    Preconfigured Columns Sets
100 – 60 000                             GRAM Combination low (P/N 208-0001)
100 – 1 000 000                       GRAM Combination medium (P/N 208-0002)
100 – 5 000 000                       GRAM Combination high (P/N 208-0003)
100 – 50 000 000                    GRAM Combination ultrahigh (P/N 208-0004)

Separation Range [Da]    Single Porosity/Linear Columns
100 – 10 000                              30 Å
300 – 60 000                            100 Å
1 000 – 1 000 000                   1 000 Å
5 000 – 5 000 000                  3 000 Å
10 000 – 50 000 000             10 000 Å
500 – 1 000 000                      Linear

Part numbers depend on particle size and dimension
Columns are available as Analytical, Preparative, or HighSpeed Columns.

Separation Range

Calibration Curves

Eluent: DMF
Calibrants: Poly(methyl methacrylate)