Excel Plus Safechange (Powder Weighing Station)

Bigneat is an innovator in the design of laboratory safety cabinets for operator and sample/process protection. Excel Plus powder weighing stations incorporate aerofoil technology and graded rear back baffle to ensure reduced turbulence. This is to ensure precise control of horizontal air flow.

Keyword for Bigneat Powder Weighing Stations is always: Ductless cabinet.

This means:

  • Precise control of air flow via built in fan. Use of micro balance 5/6 decimal place.
  • HEPA or ULPA filters are in the back side of the system, exchanged via “true safe change” procedure
  • No connection to building extraction system, saving lots of energy (no warm air exhaust ), and no issues with air conditioning settings of the different lab spaces.


Excel Plus powder weighing stations are used for the most demanding powder handling applications, such as high accuracy weighing (micro-balance), processing of pellets, capsules and tablets containing high potent powders. Development and performance testing was undertaken with the support of a leading pharmaceutical R&D company.


Excellent operator protection is achieved by enhanced airflow control and aerofoil technology which ensures that containment is achieved and maintained at the very low air flows required for balance stability.


True Safechange Technology

‘True Safechange’ is a filter change procedure and mechanism that enables the safe bagging, within the cabinet, of spent HEPA particulate filters. Replacement is performed under negative pressure, with the cabinet running. This is effective alternative to a bag in/bag-out system.