Success Story“Each sample is completely combusted and free of residue. This is the bestbasis for reliable measurement results. And at the same time, we savemoney in the development of methods as the flame sensor makes it possible
for each sample, in various volumes, to be oxidized quickly and simply
without knowing its exact combustion characteristics.”
Peter Frenzel

CHALLENGe

Site analytical leader and quality manager at Dow

DD Product quality control
DD Determination of importantelements in raw materials
and intermediate andfinished products
DD Ultratrace analysis ofnitrogen, sulfur, and chlorine

The Dow Chemical Company

Solution
DD Elemental analyzer
multi EA® 5000

Benefits
DD Analysis of organic liquids,
viscous and solid materials,gases and liquefied
pressurized gases
DD Low maintenance
DD From ppb to percent
DD Self Check System

Active around the world, the Dow Chemical Company (Dow)has been employing Analytik Jena AG instruments for thepast 15 years. Founded in 1897, Dow is one of the world’s
leading manufacturers of basic and special chemicals andhigh-performance materials. Based in Midland, Michigan, it is one of the ten largest
U.S. companies in Germany. Dow has also been active in Central Germany since 1995,
continuing the region’s strong tradition in plastics and chemical manufacturing at sites
in Schkopau, Böhlen, Leuna, and Teutschenthal.

an elemental analyzer for product quality control
Dow maintains the highest of standards whether it comes to the quality of its products
and processes, its worker safety, or its environment protection. And Analytik Jena’s
high-precision analytical measuring technology plays a role in making this possible.
Analytik Jena analyzers are used in laboratories to make it possible to meet safety
requirements and comply with various threshold values both in terms of product quality
and environmental parameters.
This includes the versatile multi EA® 5000 elemental analyzer, used chiefly by Dow todetermine important elements in raw materials and intermediate and finished products,
and to control the quality of these products. The analyzer finds particular use in theultratrace analysis of nitrogen, sulfur, and chlorine in organic liquids, viscous and solidmaterials, and in gases and liquefied pressurized gases. One of Dow’s major tasksinvolves the analysis of sulfur in petrochemical products. The incineration of theseproducts leads to sulfur and nitrous oxides, which in turn contribute to the acid rainthat not only damages forests but which poses health risks as well. There are therefore
strict guidelines for permissible levels of sulfur compounds. Using the multi EA® 5000
for its analyses, Dow ensures that these guidelines are met while safeguarding thequality of other products as well.

Elemental analyzer multi EA® 5000

“We are excellently equippedfor the future and ready to meeteven higher quality demands
for our products.”
Peter Frenzel, Dow

competitive
advantages for
the Customer
DD Equipped and ready to meeteven higher qualitydemands
DD Complete combustion freeof residue
DD Saving time and money
DD Ultratrace analysis
DD Converting the furnace fromvertical to horizontal mode
rapidly and easily
DD Fitting each sample matrix
and analysis objective

Analytik Jena AG
Konrad-Zuse-Str. 107745 Jena/Germany

Phone +49 (0) 36 41/77 70
Fax+49 (0) 36 41/77 92 79

Two furnace modes, providing flexibility andsensitivity
In the multi EA® 5000, samples are first pyrolyzed in a two-phase decomposition
process in a protective gas atmosphere, and are then oxidized at approx. 1000 °C in a
stream of oxygen. In the process, all sulfur, nitrogen, and carbon compounds areconverted into their gaseous oxides (SO2, NOX, CO2). These are subsequently analyzed
and quantified using particular detectors. UV fluorescence, chemiluminescence, andinfrared measurement are all put to use in the process. If halogen compounds are tobe found in the sample, they are converted into gaseous hydrogen halides (e.g. HCl).
The hydrogen halides are placed in a measuring cell with a titration process. Themulti EA® 5000 oxidizes all types of samples through a controlled, focused procedure
in a high-temperature furnace. The Double Furnace concept allows the laboratory teamto choose between the vertical and horizontal modes of combustion as fits each sample
matrix and analysis objective. The furnace can be converted rapidly and easily, anadvantage not provided by conventional elemental analyzers.
In the horizontal mode, samples are guided fully automatically into the combustion
unit. The process is further supported by flame sensor technology. As Peter Frenzel,
site analytical leader and quality manager at Dow explained: “Each sample is completelycombusted and free of residue. This is the best basis for reliable measurement results.
And at the same time, we save money in the development of methods as the flamesensor makes it possible for each sample, in various volumes, to be oxidized quickly
and simply without knowing its exact combustion characteristics.” The smallest
concentrations of elements can be determined best in the vertical furnace mode. The
minimum amount of sulfur detectible using ultratrace analysis lies at a mere 5 parts
per billion (5 ppb). As Peter Frenzel put it: “We are therefore excellently equipped forthe future and ready to meet even higher quality demands for our products.”

info@analytik-jena.com
www.analytik-jena.com

en · 04/2016 · 888-41010-2 © Analytik Jena AG
Subject to changes in design and scope of delivery
as well as further technical development.
Pictures ©: Istock/Ilya Glovatskiy; Dow/H.Fechner