Chemical Engineering June 2014 - 22

908 Devices
Electro-Chemical Devices
Mettler-Toledo
Focus on
Analyzers
An all-in-one sulfide analyzer
helps control odor
The new SMS-22 Sulfide Ion
Measurement System (photo) can
be quickly installed with no special
tools, features user-selectable
automated sequential sampling of
sulfide ions in water and lowers
plant technician and supply maintenance
costs. The SMS-22 saves
time and labor costs for municipal
water operations by completing all
the necessary steps to measure sulfide
ions in a water sample. Because
sulfide ions only exist at high pH
values, this is a multi-step process.
The SMS-22 conditions the sample,
measures the sulfide, neutralizes
the sample, measures the pH and
drains and rinses the cell. After
measurement, the highly caustic
sample pH is reduced to a safe level
near pH 8. The SMS-22 uses a sulfide
ion selective electrode (ISE) to
measure the total amount of sulfide
present in the sample. - ElectroChemical
Devices, Inc., Irvine, Calif.
www.ecdi.com
Density measurement with
no moving parts
The Dynatrol CL 10-HY Density
Cell and Series 2000 Density Digital
Converter (photo) can be used to
measure the density of ammonium
hydroxide, caustic soda, ethylene
glycol, hydrochloric acid, methanol,
nitric acid, oleum, phosphoric acid,
sodium chloride, sodium hydroxide,
Automation
Products
JM Science
sulfuric acid and many more. These
cells are available in a full range of
corrosion-resistant materials and
are both weather-tight and explosion-proof.
With no moving parts,
the unit it is virtually wear-free
ensuring a long operating life. The
Dynatrol Digital Density Converter
has an onboard microcontroller, and
the provided software calculates
the specific gravity, percent concentration,
and other parameters using
the density and temperature information
generated by the CL10-HY.
A two-line LCD displays temperature,
density, product frequency
and status. - Automation Products,
Inc., Dynatrol Div., Houston
www.dynatrolusa.com
A handheld mass spectrometer
for use in the field
The M908 (photo) is said to be the
world's first truly handheld tool
utilizing high-pressure mass spectrometry
(HPMS). Specifically engineered
for first responders and
military teams, the M908 provides
accurate, immediate detection and
identification of trace-level chemical
and explosive hazards at the point22
ChemiCal engineering www.Che.Com June 2014
of-action. The patented HPMS technology
that powers the M908 uses
diminutive ion traps that measure
less than a millimeter in diameter
and that are capable of operation at
10,000 times higher pressure than
those in conventional MS systems.
This enables the use of small, rugged
vacuum pumps, micro-ionizers,
detectors and efficient electronics.
- 908 Devices, Boston, Mass.
www.908devices.com
Coulometric titration for
analyzing ammonium-nitrogen
The AT-2000 Ammonia Analyzer
(photo) is based on coulometric
titration technology. It can measure
ammonium-nitrogen (NH4-N)
swiftly, accurately and easily without
any specific skill on the part
of the end-user. This system has a
wide measurement range from low
to high end with accurate measurement
and is not affected by turbidity
or color of the sample. It has a
short measurement time of typically
one minute. A very small volume of
sample is necessary (0.1, 1 or 10
mL) and calibration is not required
prior to the sample run. The elecNote:
For more information, circle the 3-digit number
on p. 56, or use the website designation.
http://www.908devices.com http://www.dynatrolusa.com http://www.ecdi.com http://www.Che.Com
Chemical Engineering June 2014

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