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With every system
- Installation & training on-site setup, gas connection and operator onboarding
- Method + calibration an O/H SOP set up on your metals and powders
O-N-H Analyzers, Analysis equipment, Elemental Analyzers
ELTRA ELEMENTRAC OH-p 2 Oxygen/Hydrogen Analyzer – Inert Gas Fusion | Steel, Metals & Ceramics
Inert-gas-fusion analyzer for oxygen and total hydrogen in metals — the sample melts in a graphite crucible in an 8.5 kW impulse furnace above 3,000 °C, with IR detection of oxygen and thermal conductivity for hydrogen.
- ✔ O / H by fusion · single or combined OH · inorganic samples
- ✔ 8.5 kW impulse furnace > 3,000 °C · closed gas system · low detection limits
- ✔ Up to 2000 mg · nitrogen carrier · Schuetze reagent · Autocleaner option
- ✔ Lead time: configured to order — request current timeline
Price held 7 days after order.
Install + training included
Tailored service plan
Built for metallurgy and AM QC teams
What your QC lab actually checks
Oxygen and hydrogen in metals by fusion
An 8.5 kW electrode impulse furnace melts the sample in a graphite crucible above 3,000 °C; oxygen is measured as CO₂ by infrared and total hydrogen by a high-sensitivity thermal conductivity cell with a nitrogen carrier. A closed gas system feeds 100 % of the sample gas to the detectors for low detection limits — the oxygen and total-hydrogen numbers that matter in steel, titanium and metal AM parts. Single-element or combined OH, robust and low-maintenance.
An applications engineer on the line
Mode and carrier-gas selection, gas calibration, crucible outgassing and blank control from engineers who run metal additive manufacturing in-house (AO Metal). Sub-4h reply, NDA standard.
About this product
The ELTRA ELEMENTRAC OH-p 2 determines oxygen and hydrogen in metals and inorganic materials by inert gas fusion. The sample melts in a graphite crucible in a powerful 8.5 kW electrode impulse furnace above 3,000 °C; oxygen is measured as CO₂ in up to two infrared cells, while hydrogen is detected in its elemental form in a high-sensitivity thermal conductivity cell using a nitrogen carrier. A closed gas system feeds 100 % of the released sample gas to the detectors for low detection limits on steel, titanium and metal AM parts.
Why metallurgy and AM labs choose the OH-p 2
Oxygen and hydrogen in metals — total-hydrogen fusion, low detection limits.
O + H by inert gas fusion
An 8.5 kW electrode impulse furnace melts the sample in a graphite crucible above 3,000 °C — oxygen is measured as CO₂ by IR and total hydrogen by thermal conductivity. Single-element or combined OH.
Closed gas system, low limits
A closed gas system under overpressure feeds 100 % of the released sample gas to the detectors, guaranteeing low detection limits and good reproducibility on demanding metals.
Sample port up to 2000 mg
Solid pieces, granules or powder in capsules load up to 2,000 mg and are freed of atmosphere by pulsed carrier-gas flushing before dropping into the crucible — robust against dust, no capsule closing needed.
Schuetze reagent + Autocleaner
A Schuetze reagent converts CO to CO₂ for oxygen while hydrogen stays elemental for the TC cell; the optional Autocleaner removes furnace deposits for precise, high-throughput analysis.
How Additive Plus supports it
A configured, installed analyzer with an O/H method dialed in on your metals.
Step 01
Configure to your samples
We spec the O, H or OH mode, carrier gas and Autocleaner to your alloy or powder and detection range before it ships.
Step 02
Install & train
Factory-trained engineers install the analyzer, connect the three-phase power, gases and PC/balance, and train your team on the ELEMENTS software.
Step 03
Method & QC support
We help build the SOP — gas calibration, crucible outgassing, blank control and a repeatable oxygen/hydrogen baseline.
What the OH-p 2 measures
Full technical specifications are in the Specifications tab. Key measurement capability:
| Parameter | ELEMENTRAC OH-p 2 |
|---|---|
| Measured elements | Oxygen, hydrogen (single or combined OH) |
| Principle | Inert gas fusion — electrode impulse furnace > 3,000 °C (8.5 kW) |
| Detection | IR for oxygen (as CO₂) · thermal conductivity for hydrogen |
| Sample weight | Up to 2,000 mg · pins, granules or powder in capsules |
| Analysis time | ~120–180 seconds |
| Carrier gas | Nitrogen 99.995 % |
Typical sample materials
Oxygen and total hydrogen in metals and inorganic materials.
Steel & cast iron
Oxygen and hydrogen QC
Titanium & AM powders
Oxygen and hydrogen control
Non-ferrous metals
Copper, aluminum, alloys
Ceramics
Oxygen content
Slags & ores
Metallurgy
Refractory metals
Incoming inspection
Not sure the OH-p 2 is the right analyzer?
Compare with related ELEMENTRAC and hydrogen analyzers in our catalog.
Adds nitrogenELEMENTRAC ONH-p 2View analyzer →
Oxygen + nitrogenELEMENTRAC ON-p 2View analyzer →
Diffusible hydrogenELTRA H-500View analyzer →
Oxygen + nitrogenELEMENTRAC ON-p 2View analyzer →
Diffusible hydrogenELTRA H-500View analyzer →
Tell us your alloy or powder and whether you need oxygen, total hydrogen, or both — our applications engineer will confirm whether the OH-p 2, the full ONH-p 2, or the H-500 hot-extraction analyzer fits. Sub-4h reply, NDA standard.
Why source the OH-p 2 through Additive Plus
- Authorized channel for ELTRA / Verder Scientific lab equipment — sales, installation, training and service in one place.
- Configured to your samples — O/H/OH mode, carrier gas and Autocleaner specified before shipping.
- Method development on your metals — gas calibration, crucible outgassing and a repeatable O/H SOP; relevant to metal AM powder QC.
- <24h response from engineers who run metal additive manufacturing in-house (AO Metal). NDA standard.
| Brand | ELTRA |
| Model | ELEMENTRAC OH-p 2 |
| Measured elements | hydrogen, oxygen |
| Samples | inorganic |
| Furnace alignment | vertical |
| Sample carrier | graphite crucibles |
| Field of application | ceramics, engineering / electronics, steel / metallurgy |
| Furnace | electrode impulse furnace (max. 8,5 KW*), temperatures in excess of 3,000 °C |
| Detection method | solid state infrared absorption for oxygen, thermal conductivity for hydrogen |
| Typical analysis time | 120 - 180 s |
| Chemicals required | Schuetze reagents, magnesium perchlorate, sodium hydroxide |
| Gas required | compressed air, nitrogen 99.995 % pure, all gases with (2 - 4 bar / 30 - 60 psi) |
| Power requirements | 3~ 400 V, 50/60 Hz, max. 8,500 W |
| Dimensions (W x H x D) | 560 x 780 x 640 mm / 22.05 x 30.71 x 25.2 in |
| Weight | ~ 165 kg |
| Required equipment | PC, monitor, balance (resolution 0.0001g) |
| Optional accessories | carrier gas purification, external chiller, gas calibration unit |
Product videos
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ELTRA ELEMENTRAC ON-p 2 Oxygen/Nitrogen Analyzer – Inert Gas Fusion | Steel, Metals & Titanium
Inert-gas-fusion analyzer for oxygen and nitrogen in metals — the sample melts in a graphite crucible in an 8.5 kW impulse furnace above 3,000 °C, with IR detection of oxygen and thermal conductivity for nitrogen.
- ✔ O / N by fusion · single or combined ON · inorganic samples
- ✔ 8.5 kW impulse furnace > 3,000 °C · closed gas system · low detection limits
- ✔ Up to 2000 mg · argon carrier possible · Autocleaner option
- ✔ Lead time: configured to order — request current timeline
In stock
· Lead time: configured to order — request current timeline
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ELTRA H-500 Hydrogen Analyzer – Hot Extraction + TCD | Steel, Copper & Alloys
Analyzer for hydrogen in metals by hot extraction — the solid sample drops into a tilting furnace at 900–1,000 °C, and a nitrogen carrier sweeps the diffused hydrogen into a high-capacity thermal conductivity cell in 3–15 minutes.
- ✔ Residual / diffusible hydrogen · hot extraction · precise at low levels
- ✔ Tilting furnace 900–1,000 °C · high-capacity thermal conductivity cell
- ✔ Solid samples up to ø13×60 mm / 10 g · minimal prep
- ✔ Lead time: configured to order — request current timeline
In stock
· Lead time: configured to order — request current timeline
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ELTRA ELEMENTRAC ONH-p 2 Oxygen/Nitrogen/Hydrogen Analyzer – Inert Gas Fusion | Steel, Metals & Titanium
Inert-gas-fusion analyzer for oxygen, nitrogen and hydrogen in metals — the sample melts in a graphite crucible in an 8.5 kW impulse furnace above 3,000 °C, with IR detection of oxygen and thermal conductivity for nitrogen and hydrogen.
- ✔ O / N / H by fusion · single or ON / OH / NH / ONH · inorganic samples
- ✔ 8.5 kW impulse furnace > 3,000 °C · closed gas system · low detection limits
- ✔ Up to 2000 mg · 32-position autoloader · Autocleaner · argon possible
- ✔ Lead time: configured to order — request current timeline
In stock
· Lead time: configured to order — request current timeline
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ELTRA CHS-580A C/H/S Combustion Analyzer – Carbon, Hydrogen & Sulfur | 0.005–100%
Combustion analyzer for the simultaneous determination of carbon, hydrogen and sulfur — the sample is burned in a resistance furnace up to 1,550 °C and measured by up to four infrared cells, covering 0.005–100 % in 60–180 seconds.
- ✔ C / H / S + TOC / TIC · 0.005–100 % · single or multi-element
- ✔ Resistance furnace to 1,550 °C (1 °C steps) · up to 4 IR cells · gold IR path
- ✔ 50–500 mg samples · optional 36/130-position autoloader (acid-resistant)
- ✔ Lead time: configured to order — request current timeline
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· Lead time: configured to order — request current timeline
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ELTRA TGA Thermostep ML Thermogravimetric Analyzer – Manual-Lid Moisture, Ash & Volatiles | 19 Samples
Manual-lid thermogravimetric analyzer — programmable furnace plus integrated balance measures moisture, ash and volatiles in up to 19 samples per run, 50–1,000 °C. A more economical route to standard-compliant TGA.
- ✔ 19 samples + 1 reference · 500 mg–5 g · moisture/ash/volatiles in one run
- ✔ Ceramic furnace 50–1,000 °C · N₂/O₂/air per stage · manual crucible lids
- ✔ Encapsulated balance 0.1 mg · ASTM D 7582 compliant
- ✔ Lead time: configured to order — request current timeline
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ELTRA TGA Thermostep Thermogravimetric Analyzer – Moisture, Ash & Volatiles | 19 Samples, 1000 °C
Automated thermogravimetric analyzer that combines a programmable furnace with an integrated balance — measures moisture, ash and volatiles in up to 19 samples per run, 50–1,000 °C.
- ✔ 19 samples + 1 reference · 500 mg–5 g · moisture/ash/volatiles in one run
- ✔ Ceramic furnace 50–1,000 °C · N₂/O₂/air per stage · crucible-lid handling
- ✔ Encapsulated balance 0.1 mg · ASTM D 7582 compliant
- ✔ Lead time: configured to order — request current timeline
On backorder
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ELTRA ELEMENTRAC CN-r Carbon/Nitrogen Dumas Analyzer – Protein & Nitrogen | Food, Feed & Soil
Automated Dumas analyzer for nitrogen / protein and carbon — reliable results in under three minutes with interleave processing, over 70× faster than Kjeldahl, on any solid or liquid matrix.
- ✔ Dumas nitrogen / protein + carbon · validated by AOAC, ISO, DIN, AOCS, OIV
- ✔ < 3 min · interleave analysis · TCD (N) + NDIR (C)
- ✔ Integrated PC + touchscreen · FDA 21 CFR Part 11 · CN-r or N-r
- ✔ Lead time: configured to order — request current timeline
In stock
· Lead time: configured to order — request current timelineFrom metallurgy and AM labs running the ELTRA ELEMENTRAC OH-p 2
Unedited feedback from materials-QC teams.
★★★★★
Oxygen and total hydrogen on steel with low detection limits. The closed gas system keeps our results tight lot to lot.
MF
Markus F. QC Engineer · Steel / metallurgy
★★★★★
Total hydrogen and oxygen on titanium AM parts is exactly what our qualification needs. Up to 2000 mg means representative samples.
LS
Lucia S. Process Engineer · Additive manufacturing
★★★★★
The sample port takes granules without closing capsules, and the Autocleaner keeps long runs reproducible.
AR
Ahmed R. Materials Engineer · Non-ferrous metals
Common questions
Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.
What does the ELTRA ELEMENTRAC OH-p 2 measure?
The ELEMENTRAC OH-p 2 determines oxygen and total hydrogen in metals and inorganic materials such as steel, non-ferrous metals, ceramics, slags and ores. It is available as a single-element analyzer for oxygen or hydrogen only, or in a combined OH configuration. Oxygen is measured as CO₂ in up to two infrared cells; hydrogen is measured in its elemental form in a thermal conductivity cell.
How does the inert gas fusion measurement work?
The weighed sample is placed on the sample port and flushed with carrier gas to keep atmospheric oxygen out of the furnace. The graphite crucible is outgassed in the impulse furnace, then the sample is dropped in and melted above 3,000 °C. Carbon in the crucible reacts with the sample's oxygen to form CO; a Schuetze reagent converts the CO to CO₂ for IR measurement while the hydrogen stays elemental and is measured by thermal conductivity. Analysis takes about 120–180 seconds.
How is the OH-p 2 different from the H-500?
The OH-p 2 melts the sample by inert gas fusion above 3,000 °C, so it measures total hydrogen (and oxygen) released from the fully molten sample. The H-500 uses hot extraction below the melting point, so it targets residual and diffusible hydrogen — the mobile hydrogen that drives embrittlement. Choose the OH-p 2 for total oxygen and hydrogen, and the H-500 for diffusible hydrogen; Additive Plus can help you decide.
Is the OH-p 2 suitable for titanium and metal AM QC?
Yes. Oxygen and hydrogen content are critical quality parameters for titanium and other metal AM parts and powders. The OH-p 2 quantifies total oxygen and hydrogen by fusion with low detection limits, and its sample port takes up to 2,000 mg — solid pieces or powder in capsules — for representative sampling. Additive Plus runs metal additive manufacturing in-house (AO Metal) and can help set up the method.
What sample sizes and automation does it offer?
The innovative sample port accepts solid pieces, granules or powder in capsules up to 2,000 mg, freed of surrounding atmosphere by pulsed carrier-gas flushing before dropping vertically into the crucible — no capsule closing required and robust against dust. An optional Autocleaner removes furnace deposits generated during melting to keep results reproducible in high-throughput operation, and a gas calibration and cleaning furnace is available.
What does the OH-p 2 need to run?
It needs nitrogen (99.995 %) as carrier gas and compressed air, an external PC and monitor, and a balance with 0.0001 g resolution. It runs on three-phase 400 V, 50/60 Hz (max 8,500 W) for the 8.5 kW impulse furnace. Options include carrier-gas purification, an external chiller and a gas calibration unit. The analyzer measures about 560 × 780 × 640 mm and weighs ~165 kg.
What is the lead time, and can Additive Plus set it up?
The ELEMENTRAC OH-p 2 is configured to order; request a quote for the current lead time. Additive Plus is an authorized ELTRA / Verder Scientific channel and handles installation, three-phase power and gas connection, calibration and operator training, then helps build your oxygen/hydrogen SOP. You can also send a sample for a paid measurement first. Sub-4h reply, NDA standard.
Place your order, or talk to an engineer first
Order ELTRA ELEMENTRAC OH-p 2 Oxygen/Hydrogen Analyzer – Inert Gas Fusion | Steel, Metals & Ceramics direct, or talk to materials engineer