Magnetic Susceptibility Balance (MSB) MK1

Magnetic Susceptibility Balance (MSB) MK1

Compared with the traditional Gouy balance methods the Sherwood Scientific MK 1 Magnetic Susceptibility Balance exhibits many advantages:

  • Ease and speed of use. Place the sample tube in the balance and get an immediate digital read-out.
  • Measurement can be made on a wide range of diamagnetic and paramagnetic materials.
  • The fixed sample tube allows susceptibility measurement of solids, liquids and gases.
  • The technique has comparable sensitivity and is as accurate as traditional methods of measurement.
  • The cost of the balance is significantly lower than a complete Gouy balance system.
  • The instantaneous digital read-out can be used to calculate magnetic susceptibility using a simple equation. This gives significant time savings in both set-up and measurement.
  • Small sample size – the balance normally works with a sample weight of around 250mg but, by using a thin-bore sample tube, as little as 50mg is required to give an accurate measurement.
  • Analogue output. Using a flow cell, allows a chemical reaction resulting in a change of susceptibility to be monitored dynamically. This allows new applications to be investigated, for example, redox reactions.
  • The equipment is compact, lightweight and hence easily portable. Only a 110V or 240V mains supply is required.
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Description

The MK 1 Magnetic Susceptibility Balance has proven to be the ideal instrument for use in teaching laboratories throughout the world where the reduced amounts of chemicals required for an experiment saves on material costs and minimises waste products disposal.

Based on their magnetic properties, all substances can be classified into one of three groups, those attracted by a strong magnetic field, known as paramagnetic, those repelled, designated diamagnetic, and finally, the most recognised class, ferromagnetic, unique in their ability to retain their own magnetic field. Ferromagnets are able to retain a permanent magnetic field since their free electrons are in close proximity and remain aligned even after the external magnetic field is removed.

Unlike the ferromagnets, the magnetic properties of the diamagnetic or paramagnetic materials could only be observed and measured when these samples are held within a magnetic field; applied externally.

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