powder weighing cabinets 

class I

class II

class III

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Powder weigh cabinets

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Weighing powders can be and is often a hazardous process requiring varying degrees of protection for the operator.

Powder weighing presents a number of considerations in the cabinet design, not least how stable the cabinet is allowing for sensitive weighing measurements and of course the protection against a solid (powder) as opposed to an aerosol (the normal usage of a microbiological (biohazard) safety cabinet - msc).

Essentially powder weighing cabinets fall into two categories: 1) the simple (relatively inexpensive - link to brochure) inward airflow design (very popular) incorporating a shield for the balance, thus reducing the effects of the inward airflow and 2) when protection is required for both the operator and the material in the cabinet a specially modified class II type msc.

Powdercap 821
Filter Specification H14 hepa 99.995 @ 0.3 microns
Total Power 49 Watts
Sound Level <55dB(A)
Face Airspeed >0.5m/sec
Dimensions WDH (mm) External 799 x 615 x 968
Internal 742 x533 x 747

The simple, no nonsense Powdercap  weigh cabinet above is an inexpensive, cost effective piece of equipment whereas the modified class II msc (if it's done right) is several times more expensive depending on a number of usage/design factors.

Our powder cabinets can also safely be used for the analysis of asbestos powders when required.

 

A above are examples of the full blown class II EN12469: 2000 msc and the simple, very popular inward airflow powder weigh cabinet. (brochure)