CS/OHN-Analysis (CS/ONH)


The G6 LEONARDO  is a great choice for process and quality control in primary metal manufacturing and processing, ceramics, and powder metallurgical processes. The three non-metals oxygen (O), nitrogen (N) and hydrogen (H) determine the quality, service life and mechanical properties of all metallic materials.


Oxygen, nitrogen and hydrogen analysis by the inert gas fusion method (IGF)

The G6 LEONARDO is based on the inert gas fusion (IGF), which involves fusion of the sample material in a graphite crucible at high temperatures. This principle is also commonly termed gas fusion analysis (GFA) or melt extraction (ME) since the total oxygen, nitrogen and hydrogen is extracted by an inert carrier gas when the sample melts. The aim of an IGF analysis is to determine the sample content of the light elements O, N and H in the trace range with absolute accuracy. That is why Bruker’s G6 LEONARDO applies the Smart Molecule Sequence™ and measures the gases emitted by the sample directly, absolutely unchanged, 1:1, with proven scientific principles for trustworthy results. 


Bruker® G6 LEONARDO Inert Gas Fusion analysis at work


Iron, Steel, Cobalt, Nickel, Ferroalloys

The G6 LEONARDO combines ease-of-use and robustness to deliver quick and accurate results on oxygen and nitrogen results for quality and process control adjustments. Determining the amount of oxygen and nitrogen is critical for the steel making process – including final alloy adjustment with ferroalloys and production of nickel or cobalt-based alloys.

Copper production

Copper Production

With a low cost of ownership, the G6 LEONARDO analyzes oxygen with high reliability – even offering precise simultaneous oxygen and hydrogen analysis using the dual element configuration. The level of residual impurities, especially oxygen, is the most important factor when grading the quality of copper. High oxygen levels increase the tendency for hydrogen embrittlement and intergranular failure.


Titanium| Zirconium| Other Refractory Metals

Low density, high strength alloys with excellent corrosion resistance such as titanium – combined with aluminum, vanadium, or molybdenum – are typically used in space, aviation, military, nuclear, biomedical and other demanding applications. The G6 LEONARDO can test the oxygen and nitrogen content as well as hydrogen content to check for hydride precipitation before the subsequent cracking becomes an issue.


Metal Processing

The G6 LEONARDO delivers essential knowledge about the chemical material composition of the metal processing tasks used in aviation, aerospace, automotive, biomedical, electronic and other industries. Whether the metal is stainless steel, aluminum, copper, nickel, titanium, zirconium or special metal alloys, the G6 LEONARDO is up to the task.


Aluminum | Magnesium

With the unique FusionControl and SampleCare, the G6 LEONARDO is the ideal quality control tool for the aluminum industry where oxygen and hydrogen are present in the production and processing of reactive light metal. Oxygen can form insoluble, refractory inclusions while hydrogen dissolved in liquid melt can be trapped during solidification and create hydrogen-filled blisters and voids.


Magnetic Materials

The G6 LEONARDO is an affordable and easy-to-use tool for process control of oxygen – which can reduce magnetic efficiency – and hydrogen which is both necessary to the manufacturing process and potentially problematic. Rare earth metals, such as the sintered Nd-Fe-B magnets show a high tendency to absorb hydrogen which can cause fatal hydrogen embrittlement.

Bruker® elemental analyzer for case hardening

Powder Metallurgy | Additive Manufacturing

The ready-to-use G6 LEONARDO can process high purity materials with strictly defined particle properties such as the metal powders used in additive manufacturing and other powder metallurgical processes where large specific surface leaves them susceptible to oxidation or moisture aging during the production chain.

Bruker® elemental analyzer for glass and ceramics

Glass | Ceramics

The G6 LEONARDO is an excellent tool for the fast analysis of oxygen, nitrogen, and hydrogen in raw materials, in-production products and final products. The unique properties of glass and ceramics are influenced in fundamental ways by the presence of oxygen, nitrogen, or hydrogen during process or in the final product. Whether needed for high performance ceramics in electronics or metal cutting or refractory oxides, nitrides, or carbides the G6 LEONARDO is the way to go.


Bruker® G6 LEONARDO analyzer information



Sample Types

Inorganic, dry, any form or shape


Sample Dimensions

8 x 8 mm cross section (pieces, chips, pins, granules), different sample ports available for special applications

Wide variety of sample materials


Water-cooled Electrode Furnace with FusionControl

Solid high temperature operation for refractories, precise temperature control




Nondispersive IR absorption of CO, no moving parts, multiple range detectors with reference beam and on-board linearization

Thermal conductivity detector with reference channel and
adjustable gain amplifier

Reliable, maintenance-free performance without drift

Reliable, adjustable ranges, drift free

Cooling Water

4 l/min at 3 bar supply pressure

Fits on every usual tap water line, tap, water-saving
design with solenoid valve, chiller also possible


EZ Drive

Lower electrode movement by reliable electronic motion module

Robust, cost-saving operation without working gas. Automatic, torque limited readjustment ensures ideal crucible:electrode contact and safety for crucible, furnace and operator.

Sample Port

Rotating sample port integrated into water cooled furnace block

Shields sensitive samples from heat input and hydrogen losses before analysis. Allows capsule-free measurement of grains without jamming.

Particle Filtering

High-capacity dust trap followed by in-line particle filtering

Stable analytical results with reduced maintenance and
component protection

Carrier Gas

Ar (O, N), He (O, N), N2 (H) each 99.995 % purity
(99.9990 % for trace analysis)

Flexible carrier gas choice without compromise

Noise Emission

< 55 dB(A) peak

Enjoy the silence


Single and multipoint calibration, advanced weighting algorithm with error bars and range merging

Easy simultaneous calibration of all ranges with


- Magnesium perchlorate
- Sodium hydroxide on support
- Copper oxide, rare earth base (N-model)
- Schuetze reagent (H-model)

Power Supply

400 - 480 VAC (± 10 %), 50-60 Hz, 32 A, 7 kVA, 1 Phase plus N or 2 Phase, grounding wire
230 VAC (± 10 %), 50-60 Hz, 64 A, 7 kVA available as option

Compatible to worldwide power and current

Models Available

Single or dual element O, N, H, ON, OH

Ideal tool for process and quality control

Dimensions and Weight

71 x 66 x 78 cm (W x D x H), ~145 kg

Compact form, easy to maintain

*) Depends on configuration

We’re ready to help you maximize your Bruker® G6 LEONARDO analyzer

Compass Engineering is an authorized US dealer for Bruker® elemental analyzers.

We specialize in comprehensive support and repair services, catering to the specific needs of your Bruker® G6 LEONARDO equipment. We’re here for you when you need parts and expert technical assistance.

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