Chemical Engineering March 2017 - 26

Focus
Laboratory Equipment
MilliporeSigma
Disposable filtration units
handle a range of fluids
This
company
has
recently expanded
its portfolio of EZ-Fit filtration
units (photo). These ready-touse,
disposable filtration devices
are designed for bioburden testing.
The newer EZ-Fit pink filtration
units come with a wide range of
membrane sizes to suit many applications,
and they feature a new
patented drain design to accelerate
processing of turbid or hard-to-filter
matrices. Both the newer pink and
the original blue units are said to
conform to international standards
(USP/EP) and water-testing regulations,
and can be used for filtration of
liquid samples, including water, raw
materials, in-process samples and
final products. They are available in
100-mL and 250-mL funnel sizes.
The optimized membrane remains
perfectly flat after filtration to stay
in constant contact with the culture
media, says the manufacturer. -
MilliporeSigma, Billerica, Mass.
www.emdgroup.com
Speakman
AirScience
Emergency shower heads
ensure complete draining
The Lifesaver Emergency Shower
Head (photo) is designed for laboratories,
industrial buildings and other
settings that require emergency
shower capabilities. Its spray engine
delivers water quickly in a stream that
is forceful but comfortable enough
for the user to stand under the spray
for a full 15 minutes (the amount
of time required to ensure effective
washing after exposure to hazardous
chemicals), says the company.
It features an integral flow regulator
that controls water flow to 20
gal/min. Its integral flow-control capabilities
allow for simultaneous
emergency shower head and eyewash
use. Three versions are available:
80-in., bright yellow ABS plastic,
8-in. stainless-steel finish, and
1-in. stainless-steel finish (featured
on recessed shower and combination
units). - Speakman, New
Castle, Del.
www.speakman.com
26
Note: For more information, circle the 3-digit number on p. 90, or use the website designation.
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
MARCH 2017
Compact laboratory hood
offers many filter options
The DWS Downflow Workstations
(photo) ensure safety and low noise
levels for laboratory operators. They
recirculate air (rather than discharging
expensive conditioned air to the
atmosphere). This reduces HVAC
strain and lowers overhead costs,
says the company. The DWS Workstations
are designed to provide a
small bench-mounted unit with unrestricted
access for operations that
may be hard to perform in a conventional
fume hood. A variety of filters
can be selected to meet the needs of
the laboratory; these include 14 different
types of carbon and specialty
media for vapors such as organics,
solvents, acids, mercury and formaldehyde.
HEPA filters for particulate
filtration are also available. -
AirScience, Fort Myers, Fla.
www.airscience.com
Measure chemical
concentration with this unit
Anton Paar
The DMA 4500 M chemicals meter
(photo) measures concentration from
the measured density, and has 140
built-in concentration tables covering
salts, acids, alkalis, alcohols, sugar
and more. Individual tables can be
added at any time. The meter provides
fully automated sample changing
and data processing, and its touch
screen technology uses chemically
hardened glass for maximum protection.
It requires a small sample volume
(2 mL) and delivers fast results
(30 s), and the automated conversion
of the density reading into a concentration
value elminates human error,
says the manufacturer. - Anton Paar
USA, Ashland, Va.
www.anton-paar.com

http://www.airscience.com http://www.emdgroup.com http://www.speakman.com http://www.anton-paar.com http://WWW.CHEMENGONLINE.COM

Chemical Engineering March 2017

Table of Contents for the Digital Edition of Chemical Engineering March 2017