Stationary Optical Emission Spectrometers (OES)

Seamless quality control is essential for any metalworking, starting with tramp element analysis for scrap, inspection of in-coming materials, QA/QC in the foundry process, melt control and goods issue.

Optical emission spectroscopy, or OES, is a well trusted and widely used analytical technique used to determine the elemental composition of a broad range of metals.

Our stationary optical emission spectrometers offer the highest levels of accuracy and precision of the analytical results, with state-of-the-art CMOS and CCD technology. A powerful yet easy-to-use software package covers almost every application.

Contact Us
Image 1


This analyzer brings high-performance on a limited budget. It’s suited to smaller foundries and metal processing companies that don’t need low detection limits. For bigger foundries and steel plants, it’s also a fast, reliable backup analyzer.

Find out more
Image 2


Ideal for companies that
need to precisely monitor nitrogen levels. It offers one of the highest performance to price ratio on the market. It’s also an ideal backup analyzer for bigger foundries.

Find out more

OE Series

These ground-breaking spectrometers OE720 and OE750 offer high optical resolution and low detection limits. They covers all elements for complete metals analysis, the OE750 even analyses gases. The OE series performs on a par with larger and more expensive spectrometers.

Find out more

Compare Our Stationary Optical Emission Spectrometers

High analytical performance
Small footprint, easy transportation    
Budget limited    
Manufacturing QA/QC
Melt process control ★☆☆ ★★☆ ★★★ ★★★
Low detection limits for trace and tramp elements ★☆☆ ★☆☆ ★★★ ★★★
Extension of calibration possible
Ultra low carbon steel analysis
Nitrogen analysis in duplex steel
Nitrogen analysis in low alloy steels
Soluble and insoluble aluminum content in low alloy steel
Analysis of hydrogen and oxygen in titanium,
oxygen in copper
Optical transparency by Argon purge Argon purge Argon purge

Middle pressure system (vacuum/argon purge combi)

Tired of wasting your time searching for grades manually?

Our OES analyzers come with the world’s largest metal database already installed. With more than 15 million records for over 350,000 materials from 74 countries, you’ll have easy access to the information you need with no time-consuming research in norms and grade catalogues.

Key applications

Secondary metal production

Melt process control, quality control of incoming and outgoing goods

Steel plants (EAF, BOF)

Analysis of melt, slag and casting


Chemical material
analysis for positive material identification (PMI)


Quality control of incoming and outgoing goods


Verifies the absence of unwanted
tramp elements

Metal trading

Quality control of incoming and outgoing goods

Why Hitachi High-Tech´s stationary OES analyzers?

Low detection limits for a wide range of elements

  • Analyze the majority of metals and their alloys, even critical, residual, trace, tramp and inoculating elements
  • Widest spectral range covering nearly all interesting elements, including Nitrogen in steel
  • Integrated grade database
  • Results at your fingertips: wide range of result forms, automatic storage

High analytical performance using robust yet reliable technology

  • Very short start-up and measurement time
  • Sample stand accessible from three sides
  • High resolution CMOS and CCD technology for best spectral line separation
  • Extensive result, report and result processing options
  • Excellent long-term stability, ensured by peak position alignment (PPA)
  • Continuous use, even in rugged conditions

ExTOPE Connect

Boost your operational efficiency with state of the art data management

ExTOPE Connect is an advanced data management and storage service that allows you to store your results safely, share data instantly and access the data in real time from any computer. Achieve greater efficiency in the field or production site when using Hitachi High-Tech’s OES.

Learn more about ExTOPE Connect

Our customer stories 

Köster und Co. GmbH: "We chose the FM EXPERT to have a cost-effective solution to analyze nitrogen at low detection limits."

Charge Correction

This optional software automatically calculates the right quantity of material to add to a melt to bring it into spec. You no longer have to rely on human expertise and it greatly speeds up the charge correction process. The software also calculates the most cost-effective way to correct the melt by considering your available source material and furnace capacity.

If you are interested in more information, please read our blogs Automated charge correction with OES analysis and Software solution ensures charge correction without the complication.

Statistical Process Control

The optional SPC allows you to easily monitor your processes and notifies you if your melt, process or instrument is out of spec. You can set an upper and lower control limit for each element and see a visual representation of each element within those limits over time. This means you can reduce scrap and rework by spotting trends before they impact the final specification. On top of this, traceability functionality makes it easy to provide information
for customer or regulatory audits.


Blog: What is Optical Emission Spectroscopy (OES)?

Read the blog

Blog: Precise analysis for duplex steel

Read the blog

Blog: Understand worldwide metal standards

Read the blog

Blog: Reading burn spots – does your OES need maintenance?

Read the blog

Blog: The secret to OES carbon analysis? Perfect sample prep

Read the blog

Blog: Charge correction without the complication

Read the blog

Blog: The effects of boron on carbon steel

Read the blog

Blog: Metals analysis method at each stage of EAF manufacture

Read the blog