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MOA Instrumentation, Inc.
Optical Emission Spectrometry
for Metals Analysis

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Spark OES metals analyzer

Spark emission spectroscopy provides the fastest, simplest and most cost effective technique for the routine analysis of both alloying and trace elements in metals for foundries, manufacturers and contract laboratories. The new MOA IV spark emission spectrometer has been designed to provide the best accuracy and precision for the analysis of aluminum, brass, bronze, cast iron, cobalt, copper, lead, magnesium, mild steel, nickel, stainless steel, solder, tin, titanium and zinc alloys on the same instrument for every element.

Optical emission spectrometer (OES)

The revolutionary design of the instrument provides full wavelength coverage from the deep ultraviolet to the near infrared using state of the art CCD detectors and multiple spectrometers within the optics cabinet. MOA IV is filled with inert gas which is scrubbed and recycled, eliminating the need for expensive and noisy vacuum pumps.

General specifications

Computer:  Desktop PC 
O/S: Microsoft® Windows® 10
Software:  MOA (64-bit Windows®)
Printer:  300 dpi B&W laser
Voltage: 110/240 VAC (50/60 Hz)
Power: 1.5 kW
Environment: 10-43°C (0-95% R.H.)
Dimensions: 84 x 136 x 108 cm (LHD)
Weight: 150 kg

Primary spectrometer specifications

Mount:  Paschen-Runge 
Focal length: 0.6 m
Temperature:  20.00 ± 0.05 °C
Wavelength:  130 – 600 nm
Dispersion (typical): 0.69 nm/mm
Resolution (typical): 0.005 nm/pixel
Pixels: >73,000
Profile: All wavelengths simultaneously

Source specifications

Control: Fiber optic
Source type: Solid state high voltage spark
Power level: Multiple, computer controlled
Gas: Argon, typically 7 LPM during analysis


The computer interacts with the instrument using Ethernet cables which are not susceptible to the electronic noise that interferes with standard USB communications.

Menu driven: Shortcut keys for common functions
Manual: Linked to each data screen
Analytical programs: Unlimited
Interference corrections: Unlimited incorporated into curve fit routine
Specification checking: Automated with user defined ranges
QC checking: Automated with user defined standards
Type standardization: Automated with user defined standards
Instrument diagnostics: Basic troubleshooting


The instrument can be quickly and easily installed almost anywhere. Just uncrate it and plug it in. An operator can be trained in the basic use the MOA IV in a day. Advanced training on creating new analytical programs, calibration, diagnostics and methods development is also available either on-site or at the MOA facility for a nominal fee.

Typical applications:

  • Aluminum
  • Brass / bronze / copper
  • Cast iron
  • Cobalt
  • Lead
  • Magnesium
  • Mild steel
  • Nickel
  • Stainless steel
  • Solder
  • Tin
  • Titanium
  • Zinc