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- Installation & training on-site setup, gas connection and operator onboarding
- Method + calibration a TOC/TIC + CO₂/water SOP set up on your samples
C-H-S Analyzers, Analysis equipment, Elemental Analyzers
ELTRA CW-800M Multi-Ramp CO₂ & Water Analyzer – TOC/TIC Acid-Free | Cement, Soil & Waste
Multi-ramp version of the CW-800 for simultaneous carbon dioxide and water — up to five programmable temperature steps release and resolve TOC/TIC and water fractions without adding acids, measured by infrared cells.
- ✔ CO₂ + water · TOC / TIC without acids · fraction "chromatogram"
- ✔ Up to 5 programmable ramps · resistance furnace to 1,000 °C · 1–2 IR cells
- ✔ Nitrogen & oxygen carrier · gold IR path · no halogen trap
- ✔ Lead time: configured to order — request current timeline
Price held 7 days after order.
Install + training included
Tailored service plan
Built for environmental and minerals labs
What your QC lab actually checks
Temperature-resolved carbon and water
Up to five programmable temperature steps to 1,000 °C, with selectable nitrogen or oxygen carrier, release the individual carbon and water fractions of a sample so infrared cells can resolve TOC and TIC without any acid digestion. The result is a fraction "chromatogram" of CO₂ and water — ideal for soils, sediments, cement, slag and waste where organic and inorganic carbon must be separated.
An applications engineer on the line
Temperature-program design, carrier-gas sequence, calibration and blank control from engineers who run materials characterization in-house. Sub-4h reply, NDA standard.
About this product
The ELTRA CW-800M is a multi-ramp version of the CW-800 for the simultaneous determination of carbon dioxide and water — and for TOC/TIC without adding acids. Up to five programmable temperature steps (up to 1,000 °C) with selectable carrier gas release the different carbon and water fractions of a sample, which infrared cells measure to build a “chromatogram” of the fractions. Minimal sample preparation, a gold IR path and no halogen trap make it robust for cement, minerals, soil, slag and waste.
Why environmental and minerals labs choose the CW-800M
Temperature-resolved carbon and water fractions — TOC/TIC without acids.
Up to 5 programmable ramps
Define up to five temperature steps with different carrier gases to release and resolve individual carbon and water fractions in a single run.
TOC & TIC without acids
Separate total organic and total inorganic carbon thermally — no acid digestion, less sample handling and no acid waste to manage.
CO₂ + water in one chromatogram
Simultaneous CO₂ and water determination produces a fraction “chromatogram” that shows how carbon and water are distributed across the temperature program.
Gold IR path, dual carrier gas
Customized IR cells with a gold path extend cell life on halogen- or acid-containing samples; nitrogen and oxygen carriers, no halogen trap and electronic gas-flow control keep it low-maintenance.
How Additive Plus supports it
A configured, installed analyzer with a temperature program dialed in on your samples.
Step 01
Configure to your samples
We build the multi-step temperature program, carrier-gas sequence and IR-cell setup for your TOC/TIC and moisture question before it ships.
Step 02
Install & train
Factory-trained engineers install the analyzer, connect nitrogen, oxygen and the PC/balance, and train your team on programs and analysis.
Step 03
Method & QC support
We help build the SOP — ramp steps, calibration, blank control and a repeatable TOC/TIC and CO₂/water baseline.
What the CW-800M measures
Full technical specifications are in the Specifications tab. Key measurement capability:
| Parameter | CW-800M |
|---|---|
| Measured | Carbon dioxide and water · TOC / TIC (acid-free, by temperature) |
| Principle | Multi-ramp thermal release (resistance furnace to 1,000 °C, up to 5 steps) + solid-state IR |
| Detection | 1–2 infrared cells · gold IR path · no halogen trap |
| Carrier gas | Nitrogen and oxygen 99.995 % (2–4 bar) |
| Analysis time | ~5–20 minutes (program-dependent) |
| Requirements | PC, monitor, 0.0001 g balance · quartz boats |
Typical sample materials
Where carbon fractions (TOC/TIC) and bound water must be resolved.
Cement & gypsum
CO₂ and crystallization water
Soil & sediment
TOC / TIC without acids
Minerals & ores
Carbonate content
Slag & waste
Carbon fractions
Construction materials
Incoming and process QC
Environment / recycling
Organic vs inorganic carbon
Not sure the CW-800M is the right analyzer?
Compare with related ELTRA analyzers in our catalog.
Single-stepELTRA CW-800View analyzer →
Carbon / sulfurELTRA CS-580AView analyzer →
Surface carbonELTRA SurfaceC-800View analyzer →
Carbon / sulfurELTRA CS-580AView analyzer →
Surface carbonELTRA SurfaceC-800View analyzer →
Tell us whether you need TOC/TIC fractionation, carbonate CO₂, bound water, or all three — our applications engineer will build the right CW-800M temperature program and IR-cell configuration. Sub-4h reply, NDA standard.
Why source the CW-800M through Additive Plus
- Authorized channel for ELTRA / Verder Scientific lab equipment — sales, installation, training and service in one place.
- Configured to your samples — temperature program, carrier-gas sequence and IR cells specified before shipping.
- Method development on your samples — ramp steps, calibration, blank control and a repeatable TOC/TIC SOP.
- <24h response from engineers who run materials characterization in-house. NDA standard.
| Brand | ELTRA |
| Model | CW-800M |
| Measured elements | carbon dioxide, water |
| Furnace alignment | horizontal |
| Sample carrier | quartz boats |
| Field of application | agriculture, biology, chemistry / plastics, construction materials, environment / recycling, geology / mining, others |
| Furnace | resistance furnace with quartz tube, adjustable up to 1000 °C |
| Detection method | solid state infrared absorption |
| Number of IR cells | 1 - 2 |
| Material of IR path | gold |
| Typical analysis time | 5 - 20 min (depending on program) |
| Chemicals required | copper oxide, magnesium perchlorate, sodium hydroxide |
| Gas required | nitrogen 99.995 % pure (2 - 4 bar / 30 - 60 psi) oxygen 99.995 % pure (2 - 4 bar / 30 - 60 psi) |
| Power requirements | 230 V, 50/60 Hz, max. 10 A, 2300 W |
| Dimensions (W x H x D) | 550 x 800 x 600 mm / 21.65 x 31.5 x 23.62 in |
| Weight | ~ 65 kg |
| Required equipment | PC, monitor, balance (resolution 0.0001g) |
| Optional accessories | TIC module, voltage stabilizer 5 KVA |
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- ✔ Resistance furnace to 1,550 °C (1 °C steps) · up to 4 solid-gold IR cells
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- ✔ Lead time: configured to order — request current timeline
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ELTRA CS-580A Carbon/Sulfur Combustion Analyzer – C & S, TOC/TIC | 0.005–100%
Combustion analyzer for the simultaneous determination of carbon 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 60–120 seconds.
- ✔ C / 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
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- ✔ Lead time: configured to order — request current timeline
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- ✔ 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
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- ✔ 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
In stock
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- ✔ Lead time: configured to order — request current timeline
In stock
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- ✔ Lead time: configured to order — request current timeline
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ELTRA ELEMENTRAC CS-i Induction Carbon/Sulfur Analyzer – Metals & Ceramics | 0.6 ppm–6%+
Induction-furnace analyzer for carbon and sulfur in inorganic samples and metals — combustion above 2,000 °C with up to four infrared cells covering 0.6 ppm to more than 6 % at 1,000 mg, in about 40 seconds.
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- ✔ Lead time: configured to order — request current timeline
In stock
· Lead time: configured to order — request current timelineFrom environmental and minerals labs running the ELTRA CW-800M
Unedited feedback from QC teams.
★★★★★
TOC and TIC on sediments without acid digestion. The temperature program separates the fractions cleanly and there is no acid waste.
MF
Markus F. Lab Supervisor · Environment / recycling
★★★★★
The multi-step ramps let us resolve carbonate CO₂ from organic carbon in one run. Reporting is much simpler now.
LS
Lucia S. QC Engineer · Geology / mining
★★★★★
Gypsum and cement fractions are repeatable and fast. Low maintenance with the gold IR path and no halogen trap.
AR
Ahmed R. Materials Engineer · Building materials
Common questions
Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.
What does the ELTRA CW-800M measure, and how is it different from the CW-800?
The CW-800M simultaneously determines carbon dioxide and water, and it additionally separates TOC (total organic carbon) and TIC (total inorganic carbon) without adding acids. Unlike the single-step CW-800, it lets you define up to five programmable temperature steps with different carrier gases, so different carbon and water fractions are released and resolved in one run as a fraction "chromatogram".
How does the measurement work?
You weigh the sample into a quartz boat and place it on the loading mechanism of the furnace. A user-defined program then applies different temperatures (up to 1,000 °C) and carrier gases, and the CO₂ and water released at each step are measured by infrared cells. The software builds a chromatogram of the carbon and water fractions. An external PC controls the process; a typical analysis takes up to about 20 minutes depending on the program.
Can it separate TOC and TIC without acid?
Yes — that is the key advantage of the CW-800M. Because carbon is released thermally in defined temperature steps, total organic and total inorganic carbon can be distinguished without acid digestion. This removes acid handling and acid waste from the workflow and reduces sample preparation, which is valuable in environmental, soil, sediment and building-material labs.
Which materials is the CW-800M used for?
The CW-800M is used for gypsum, cement, limestone, minerals, ores, soil, slag and waste, across construction-material, geology/mining, environment/recycling and agriculture labs. Anywhere the organic and inorganic carbon fractions or bound water need to be resolved, the programmable temperature steps give a clear picture with minimal preparation.
What carrier gases and consumables does it use?
The CW-800M uses nitrogen and oxygen at 99.995 % purity (2–4 bar) as selectable carrier gases, and copper oxide, magnesium perchlorate and sodium hydroxide as reagents. Customized infrared cells with a gold IR path extend cell life on halogen- or acid-containing samples, so no halogen trap is required. Electronic gas-flow control keeps the temperature-program conditions stable.
What does the CW-800M need to run?
It needs nitrogen and oxygen at 99.995 % purity, an external PC and monitor, and a balance with 0.0001 g resolution. It runs on 230 V, 50/60 Hz (max 10 A, 2,300 W). A TIC module and a 5 kVA voltage stabilizer are available as options. The analyzer measures about 550 × 800 × 600 mm and weighs ~65 kg, so it fits on a standard lab bench.
What is the lead time, and can Additive Plus set it up?
The CW-800M is configured to order; request a quote for the current lead time. Additive Plus is an authorized ELTRA / Verder Scientific channel and handles installation, gas and balance connection, calibration and operator training, then helps build your multi-step TOC/TIC and CO₂/water 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 CW-800M Multi-Ramp CO₂ & Water Analyzer – TOC/TIC Acid-Free | Cement, Soil & Waste direct, or talk to materials engineer