Magnetic Macroporous Bead Cellulose MG

Pure or its derivatives for magnetic separations | General informations

Macroporous Bead Cellulose MG and its derivatives can be used for izolation or magnetic modification of biologically active matters, cells, sub-cellular components, contaminants of environment or other matters of studied systems. Especially advantageous is their use in microbiology, cell biology, medicine, biochemistry, biotechnology and ecology.

All types of non-magnetic sorbents can be delivered also as magnetic sorbents used for magnetic separations. Magnetic sorbents can be delivered in the same assortment as non-magnetic sorbents. For example: Are you interested in →  IONTOSORB SHP? We can produce you MAGNETIC SORBENT IONTOSORB SHP. But SHP 100 or SHP 200, because Magnetic Macroporous Bead Cellulose and its derivatives are made in these porozities only:

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MG - porozities and particle sizes
PorozityParticle size [microns]

(50), 100, 200

30 - 50
50 - 80
80 - 100

Basic properties of derivatives IONTOSORB are the same both for magnetic or non-magnetic beads.

Magnetic macroporous bead celulose (types MG) is produced by the same technology as a classic macroporous bead cellulose (types MT) with the only difference that MG has in its matrix built in Fe3O4 in amount min. 30 % related to dry matter.

These Fe3O4 particles are present in the cellulose matrix and therefore macroporosity is not influenced by the Fe3O4 particles. This fact corresponds also with a B.V. for Iontosorb MG re-calculated to MT.

If an average experimental B.V.value for MG = 7.4 mlg-1 of dry matter MG and a determined ash content 29.7 %, then the bellow given equation can be used for the re-calculation of the found B.V. of MG to a calculated B.V., which would correspond to the MT without Fe3O4.

Calculation of B.V. value from MG to MT:

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Ash Content [%] for MG,
B.V. found for MG [ml-1 grame dry per MG]

B.V. values
Porosity of MGB.V. for Iontosorb MG  [ml g-1 dry]
50   5.0
100 7.50 9.10
200 9.30 10.60

Macroporous Bead Cellulose MG types are highly porous gels well accessible for large macromolecules, as it is shown in this Figures.

Size exclusion limits
Selectivity curves of Macroporous Bead Cellulose MG types Kav vs. Molecular Weight of Dextran in semilogarithmic scale
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Ion Exchange Magnetic Macroporous Bead Cellulose
Bead Cellulose SorbentsIONTOSORBFunctional GroupsPraticle Size [μm]
Cation ExchangersStrongly acidicMG SHPSulphonic 30 – 50
50 – 80
80 – 100
100 - 250
Weakly acidicMG CMCarboxymethyl30 – 50
50 – 80
80 – 100
100 - 250
Anion ExchangersStrongly basicMG TMAHPTrimethyl30 – 50
50 - 80
80 - 100
100 - 250
Weakly basicMG DEAEDiethylaminoethyl30 – 50
50 – 80
80 – 100
100 - 250
Content functional group, mmol/gram dry
We kindly ask you to tell us in your orders a required content of functional groups in the Iontosorb MG derivative, for example Iontosorb MG CM 200 L.
Low 0,08 - 0,18
Medium 0,20 - 0,48
Hegiht 0,50 - 0,90
Very height 1,0 - 1,26