18
LMS Issue 2 | 2014
Clean Environment
Ductless Fume Cabinets
W
hen handling chemicals in
the laboratory, it is imperative to avoid inhalation of potentially
harmful substances and to work in an
environment where the vapours are
safely removed.
There are two types of safety enclosures that may be used for laboratory
handlings, namely a ducted fume
cupboard or a ductless cabinet of a
recirculatory filtration type.
Labs handling chemicals usually use
a ducted fume cupboard.
However, the modern option would
be a portable ductless fume cabinet,
which is a space-efficient and economical solution.
How does a ductless
fume cabinet work?
Air is drawn from the laboratory,
past the operator and up through a
filter system, removing particulates and
chemicals (acids, bases, solvents). The
clean air is then returned to the laboratory. The filter system can comprise
up to three filters, namely a pre-filter,
particulate filter and carbon filter.
Bigneat’s Chemcap Clearview range
features a touch-button on/off control
panel with incorporated service due
indicator and audible low airf low.
Clearview vision offers 360° visibility.
The air filter system within the cabinet
also removes vapours and odours in
the laboratory. Bigneat’s ductless fume
cabinets are well specified and supplied with all the usual laboratory user
requirements.
There is also the option of a mobile
bench that converts the cabinet to a
portable unit. More laboratories choose
this type of cabinet to ensure protection
of their staff. ⚛
AirFilterMaintenanceServices
Contact: Ona Booysen
Tel: 011-462-0120
Email: [email protected]
Separating Pollutants in Waste-Water Treatment Plants
V
ELP Scientifica has developed a
complete line of instruments to
support the lab technician working in
the environmental sector and for the
separation of pollutants in waste-water
treatment plants in particular.
Jar Test