Columns

All columns produced by KGW-Isotherm are manufactured and tested to standard 12492 "Devices with vacuum insulation". Each column is subjected to an individual test at a temperature of 200° C. All columns are manufactured with opposite viewing stripes as standard. The types listed in the tables are only a selection of our well-selled columns.

All columns including the standard types are produced to the costume's order. Therefore modifications to the ground glass joints are usually offered free of charge.

In addition to the types described here, other versions are available on request at any time. With the aid of CAD we are able to send you on request an offer with drawings.

Packed columns

with standard or spherical ground joints

Packed columns have excellent rectifying characteristics and ensure high throughputs for small operating volume and low pressure drops. A funnel for fixing of the packings is fused into the lower part of the column. This avoids by-passing at the edges of the column. When smaller packings are used, larger packings must first be inserted in the funnel to avoid the smaller packings falling through the aperture in the funnel. The aperture in the funnel guarantees a free cross-section of at least 75 percent of the surface of the ground joint.

Packed-columns with added ground in joints

Possible ground in joints are

  • Kolonne1
    Packed-column with spherical ground joints 
  • Kolonne2
    Packed-column with flange joints 
  • Kolonne3
    Packed-column a la Hempel

Packed-columns with seated - in head joints

Possible ground in joints are

  • Kolonne4
    Packed-column with conical ground joints 
  • Kolonne5
    Packed-column with spherical ground joints

Vigreux columns with standard or spherical ground joints

Vigreux-columns are far more suitable for vacuum applications than packed columns, as the pressure difference is extremely low. Compared to the packed columns, they have a very low rectifying effect.

Vigreux-columns with added ground joints

Possible ground in joints are

  • Kolonne6
    Vigreux-column with conical ground joints

Vigreux-columns with seated - in head joints

Possible ground in joints are

  • Kolonne6
    Vigreux-column with conical ground joints
  • Kolonne6
    Vigreux-column with spherical ground joints

Heatable Columns

Possible ground in joints are

  • Kolonne6
    Heatable packed-column with conical ground joints
  • Kolonne6
    Heatable vigreux-column
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