ELTRA Elemental Analysis combustion analyzers, consumables and OEM spare parts

Supply German-engineered elemental analyzers for carbon, sulfur, oxygen, nitrogen, and hydrogen determination, TGA Thermostep proximate analyzers, certified crucibles, chemical reagents, and OEM spare parts from ELTRA GmbH (Verder Scientific).

ELEMENTRAC CS-i High-Frequency Induction Carbon and Sulfur Analyzers

High-precision ELEMENTRAC CS-i elemental analyzers featuring a high-frequency induction furnace (2.2 kW, exceeding 2000°C) deliver direct rapid carbon and sulfur determination in solid inorganic matrices (steels, cast iron, titanium, refractory alloys, ceramics, cement) within 40–50 seconds.

Analytical measurement range: C from 0.6 ppm to 6% (up to 100%), S from 0.6 ppm to 6% (up to 100%), sample mass up to 1000 mg
2.2 kW induction furnace operating at 20 MHz, 99.995% purity oxygen carrier gas (2–4 bar inlet), 40–50 s test cycle
Solid-state NDIR infrared detection cells with gold-plated absorption paths, heated dust trap and automated lance cleaning
Spare parts: induction work coils, quartz combustion tubes, crucible pedestals, heated dust filter cartridges 11170

ELEMENTRAC CS-d Dual-Furnace Carbon and Sulfur Analyzers

Universal ELEMENTRAC CS-d dual-furnace analyzers integrate both a 2.2 kW high-frequency induction furnace (>2000°C) and a ceramic SiC resistance furnace (up to 1550°C), delivering seamless C and S testing across inorganic metals, alloys, ceramics, as well as organic coal, coke, oils, and soils in

one analyzer.

Two independent combustion systems: 2.2 kW induction furnace (>2000°C) and horizontal SiC resistance furnace (up to 1550°C)
Software-controlled furnace selection via Elements platform without manual gas re-routing or optical recalibration
Full standard compliance: ASTM E1019, ASTM D4239, ISO 9556, ISO 10719, DIN EN ISO 15350
Spare parts: silicon carbide (SiC) heating rods, ceramic combustion tubes, purge gas nozzles, dust filter inserts

ELEMENTRAC CS-r and CHS-r Resistance Combustion Analyzers

ELEMENTRAC CS-r and CHS-r laboratory analyzers equipped with a robust horizontal resistance furnace (up to 1550°C) provide simultaneous multi-element determination of carbon, hydrogen, and total sulfur across coal, coke, peat, biofuels, RDF alternative fuels, organic chemicals, and building

materials.

Operating resistance furnace temperature up to 1550°C (1°C increments), sample boat capacity up to 500 mg (coal up to 1000 mg)
Multi-detector configuration: up to 4 customized NDIR absorption cells for simultaneous C, H, and S quantification
Strict compliance with ASTM D4239, ASTM D1552, ISO 15178, DIN 51724-3, and European biofuel testing directives
Spare parts: ceramic combustion boats, furnace entry sealing gaskets, Type S thermocouple probes, catalyst quartz tubes

ELTRA CS-580 and CS-580A Carbon and Sulfur Analyzers with Autoloader

Industrial-grade ELTRA CS-580 and CS-580A elemental analyzers featuring a vertical resistance furnace (up to 1550°C) and optional 36- or 130-position carousel autoloaders deliver continuous 24/7 unattended serial carbon and sulfur analysis for coals, ores, cement raw meals, and mineral processing

plants.

Automated sample boat loader carousel available in 36 or 130 positions with optical boat positioning and drop sensors
Maximum furnace operating temperature 1550°C, gas-tight dense ceramic combustion chamber, 2–4 L/min oxygen supply
Sample analysis cycle duration 60–180 s depending on sample matrix, multi-range linear calibration algorithm
Spare parts: boat pushers, carousel stepper motors, CO2/H2O absorption glass tubes, certified Ascarite chemical packing

ELEMENTRAC ONH-p / ONH-p 2 Impulse Oxygen, Nitrogen and Hydrogen Analyzers

ELEMENTRAC ONH-p and ONH-p 2 inert gas fusion analyzers featuring a water-cooled impulse furnace (up to 8.5 kW, exceeding 3000°C) quantify ultra-trace and bulk concentrations of oxygen, nitrogen, and hydrogen in steels, titanium, superalloys, copper, zirconium, and refractory powders.

Impulse electrode furnace up to 8.5 kW (>3000°C), 99.999% helium or argon carrier gas, detection limit down to 0.05 ppm
Hybrid detection: NDIR infrared cells for oxygen (as CO/CO2) and solid-state thermal conductivity cell (TCD) for N2 and H2
Automated pneumatic upper electrode brushing, optional autoloader for graphite crucibles and optical pyrometer temperature tracking
Spare parts: upper/lower water-cooled electrodes, inner/outer graphite crucibles, cleaning brush inserts, FKM O-ring seals

ELEMENTRAC H-r Diffusible and Residual Hydrogen Analyzers

Dedicated ELEMENTRAC H-r analyzers featuring a horizontal resistance furnace are engineered for standard-compliant quantification of diffusible and residual hydrogen in weld seams, heavy steel plates, wire rods, and titanium components in accordance with ISO 3690 and AWS A4.3.

Diffusible hydrogen testing up to 1100°C with large quartz sample tubes accommodating massive weld pins without pre-cutting
High-sensitivity temperature-stabilized thermal conductivity cell (TCD) exhibiting baseline drift under 0.1 ppm
Inert nitrogen or argon carrier gas protection with automated calculation of hydrogen yield in mL/100 g deposited metal
Spare parts: quartz sample introduction boats, resistance heating coils, gas calibration dosing valves, micro-particle filters

TGA Thermostep Macro Thermogravimetric Analyzers

Automated TGA Thermostep proximate analyzers combine a programmable 1000°C furnace with an internal high-resolution balance (0.1 mg precision) for simultaneous proximate determination of moisture, volatile matter, and ash content across 19 sample batches.

Sample carousel supporting 19 test crucibles plus 1 tare/reference position, sample mass up to 5 g, operating temperatures up to 1000°C
Integrated electronic micro-balance with 0.0001 g (0.1 mg) resolution, automated atmosphere switching between N2, O2, and dry air
Standard test compliance: ASTM D5142, ASTM D7582, DIN 51718, ISO 11722 for solid fuels, coke, plastics, and agricultural waste
Spare parts: calibrated TGA ceramic crucibles with covers, weighing balance pedestals, heating coils, furnace top seal gaskets

Original ELTRA Consumables, Crucibles, Reagents and Standards

Certified supplies of original ELTRA GmbH ceramic and graphite crucibles, chemical absorption reagents, oxidation catalysts, combustion accelerators, and certified reference materials (CRM) guaranteeing analytical repeatability across ELEMENTRAC, CS-800, ONH-2000, and CS-580 analyzers.

Ceramic crucibles (part numbers 90148, 90149, 90150), combustion boats 90160, and inner/outer graphite crucibles for ONH gas analyzers
Chemical absorption reagents: magnesium perchlorate Anhydrone (90210), sodium hydroxide on support Ascarite (90220), quartz wool (90330)
Catalysts and accelerators: wire-form copper oxide (90200), platinum catalyst (90280), pure tungsten (90500), high-purity iron chips (90520)
Consumable spare parts: quartz and alumina combustion tubes, Viton/FKM sealing ring sets, electrode cleaning brushes, filter elements 11170

Equipment identification and ELTRA GmbH nameplate verification

ELTRA GmbH (Retsch-Allee 1-5, 42781 Haan, Germany; founded in 1981, division of Verder Scientific within the global Verder Group) is a world-renowned manufacturer of elemental combustion analyzers and thermogravimetric systems.

When ordering replacement combustion tubes, induction coils, optical detection cells, chemical reagents, or crucibles, specify the analyzer model (ELEMENTRAC CS-i, CS-d, CS-r, CHS-r, ONH-p 2, H-r, CS-580A or legacy CS-800, ONH-2000) and the serial number from the backplate.

Providing a clear photograph of the equipment rating plate along with original part numbers (e.g., heated dust filter 11170, ceramic crucibles 90148) ensures exact mechanical, chemical, and gas-tight compatibility.

ELEMENTRAC CS-i induction furnace technology (2.2 kW, >2000°C combustion)

The ELEMENTRAC CS-i series utilizes a 2.2 kW high-frequency induction furnace operating at 20 MHz to combust inorganic solid specimens (steels, cast iron, copper, titanium alloys, refractory ores, cement) in pure oxygen at temperatures exceeding 2000°C.

The integrated oxygen lance introduces 99.995% purity oxygen directly above the ceramic crucible, ensuring complete conversion of carbon to CO/CO2 and sulfur to SO2 within a rapid 40–50 second cycle.

We supply genuine RF generator work coils, coaxial connectors, quartz combustion tubes, automated pneumatic crucible pedestals, lance purge nozzles, and heated dust filter cartridges.

Dual-furnace versatility: ELEMENTRAC CS-d for inorganics and organics

The innovative ELEMENTRAC CS-d combines an induction furnace (>2000°C) and a resistance ceramic tube furnace with silicon carbide (SiC) elements (up to 1550°C) into a single analytical instrument.

This dual configuration enables multidisciplinary testing laboratories to analyze both difficult-to-fuse metals and organic coal, coke, fuel oils, rubber, and agricultural soils without requiring separate instruments or manual gas re-routing.

We deliver SiC resistance heating rods, high-density alumina combustion tubes, boat entry seals, thermocouple probes, and gas manifold solenoid valves.

Inert gas fusion in ELEMENTRAC ONH-p: trace gas extraction up to 3000°C

Accurate quantification of oxygen, nitrogen, and hydrogen in titanium alloys, nickel superalloys, copper, and zirconium relies on impulse furnace electrode fusion under helium or argon carrier gas at temperatures exceeding 3000°C.

Solid-state multi-range NDIR infrared cells measure oxygen as CO/CO2, while a temperature-stabilized thermal conductivity detector (TCD) quantifies nitrogen and hydrogen down to an ultra-trace detection limit of 0.05 ppm.

We supply upper and lower water-cooled electrode assemblies, graphite crucible holders, electrode cleaning brass/steel brushes, quartz reagent tubes, and FKM fluoropolymer seal sets.

Original ceramic and graphite crucibles, combustion boats and reagents

Analytical precision and blank value stability depend strictly upon the chemical purity of laboratory consumables. Original ELTRA ceramic crucibles (part numbers 90148, 90149, 90150) and combustion boats 90160 feature ultra-low carbon and sulfur blanks.

For ONH gas analyzers, high-density isostatically pressed and vacuum-degassed graphite crucibles eliminate atmospheric hydrogen and nitrogen contamination during rapid pulse heating.

We supply certified absorption reagents: magnesium perchlorate Anhydrone (90210), sodium hydroxide on support Ascarite (90220), wire-form copper oxide (90200), platinum catalyst (90280), and quartz wool (90330).

Accelerators, oxidation catalysts and certified reference materials (CRM)

Induction combustion of refractory metals requires high-purity metallic accelerators: pure tungsten granules (90500, 90502), high-purity iron chips (90520), and copper accelerators (90510) to facilitate rapid melting and oxidation.

Catalytic converters ensure complete conversion of carbon monoxide to carbon dioxide and sulfur dioxide for linear optical detection.

We supply certified reference standards (CRM) with traceable calibration certificates: steel pins, cast iron chips, coal, and coke standards for daily instrument verification and ISO/IEC 17025 laboratory accreditation.

Maintenance protocols, heated dust filter replacement and FKM seals

Maintaining peak analytical sensitivity in round-the-clock industrial testing requires scheduled preventative maintenance: daily dust trap cleaning, periodic FKM O-ring replacement, and regular catalyst repacking.

The heated dust filter cartridge (11170) prevents moisture condensation and sulfate aerosol deposition, safeguarding gold-plated NDIR optics from baseline drift and contamination.

We supply comprehensive preventative maintenance kits, replacement filters, brass electrode brushes, Viton O-rings, high-vacuum grease, and sample handling forceps.

Worldwide export, engineering selection and original ELTRA parts supply

We organize global export deliveries of ELTRA elemental analyzers, TGA Thermostep thermogravimetric systems, certified consumables, crucibles, catalysts, and replacement components.

Our engineering specialists verify catalog compatibility, prepare secure shockproof export packaging for fragile quartz and ceramic glassware, and coordinate international freight.

Contact our team with your laboratory sample matrices, target elements (C, S, O, N, H), or equipment serial number to receive an expert technical recommendation and commercial quotation.

Equipment configurations, manufacturing lead times, and pricing for ELTRA analyzers and consumables are quoted individually upon commercial request; public retail price lists are not published by the manufacturer. We are an independent supplier and not an authorized distributor.

This page is dedicated exclusively to eltra.com elemental analyzers and is isolated from encoder maker ELTRA s.r.l.