In detail
Modes
The UNICUBE trace is optimized for the analysis of:- CN
- N
Analytical specifications
Weighing range
Large weighing range spanning from micro (< 1 mg) to macro (around 1 g of soil) applications and up to 15 mg of organic matter.
Precision
< 0.1 % absolute (homogeneous substance), depending on sample type, analysis mode, and configuration
Element concentration range
Largest dynamic range of element concentrations:
C: up to 50 mg absolute or 10 ppm - 100 %
N: up to 10 mg absolute or 10 ppm -100 %
Analysis time
~ 5 min, self-optimizing depending on element content and sample weight. Depending on sample type, analysis mode, and configuration.
Technical specifications
High-temperature combustion unit
Complete sample digestion at up to 1,200 °C (or 1,800 °C at the point of combustion when tin foil is used) with a ten-year furnace warranty. A jet injection of oxygen directly to the sample leads to the highest oxygen concentrations at the point of combustion, as well as low gas consumption. 100 % recovery is guaranteed even for samples, that are traditionally hard to combust.
Detector
Thermal Conductivity Detector (TCD) optimized for C and N
Maximum furnace temperature
1,200 ° C (whereby 1,800 °C is briefly reached at the combustion point when using tin foil)
Required gases
Helium and oxygen
Purge and trap chromatography
While N as N2 travels directly to the thermal conductivity detector (TCD), C as CO2 is trapped on our TPD column. Only once the nitrogen peak reaches baseline, the column is heated rapidly and CO2 travels to the detector. This results in perfect peak separation without overlap, and automatic optimization of the analysis time.
Sample introduction
- Integrated 60*, 80*, or 120 positions autosampler (for solids and liquids in capsules), reloadable during analysis
- Integrated 2 ml vial, 50 positions liquid autosampler with rinse and waste vial*, reloadable during analysis
Instrument control
Windows® based UNICUBE® trace operating software with LIMS integration and auto sleep and wake-up function for automated and unattended overnight operation. 21 CFR Part 11 functionality available.*
Dimensions
48 x 55 x 57 cm (W x D x H)
* optionally available
Accessories
Electronic balance
Balance and elemental analyzer form a system. We offer analytical balances from the leading manufacturers with our instruments. Please ask us for further information.
Capsule sealing press
Tool for the exact dosing and gas-tight sealing of tin or silver capsules, for liquid and sensitive samples.
Sample former and pressing tools
For simplified sample preparation, we offer a manual tool for compressing samples in tin foil or cups, and a mechanical press for the preparation of pellets with paper wrapping.
Unmatched analytical performance:
Limit of detection (LOD) of 10 ppm or < 15 μg C
- The soli TOC® cube is the most sensitive instrument in the market and offers an unmatched measurement range from 0.001 – 100 % carbon.
- Reproducible measurements due to precise adjustable temperature with fast heating rates. Temperature is measured where it matters, directly at the crucible.
- Consistent high measurement quality thanks to the use of a post-combustion catalyst. This ensures that even high carbon-content samples are quantitatively oxidized.
- Optimized separation of residual organic carbon (ROC) and total inorganic carbon (TIC) for special samples thanks to integrated carrier gas switching.
Fast & easy analyses: Autosampler for 24/7 operation & automated ash removal
- Autosampler with 89 positions, optimized for unattended 24/7 high-throughput operation.
- Minimized efforts for sample preparation due to the advanced temperature ramping and the crucible technology.
- Automated ash removal and clearly arranged, easily accessible system components minimize maintenance efforts.
Einfachste Probenvorbereitung: Minimierter Aufwand dank Tiegeltechnologie
- Einfache Analyse von Progeneinwaagen bis zu 3 g.
- Auch inhomogene Proben lassen sich zeitsparend einwiegen und präzise analysieren, da größere Probeneinwaagen den Aufwand für Homogenisierung deutlich reduzieren.
- Komfortable TOC-Messungen gemäß DIN EN 15936 mit direkter Ansäuerung der Probe im alternativen Keramiktiegel.
- Verringerte Kosten für Verbrauchsmaterialien durch wiederverwendbare Tiegel.
Unübertroffene Flexibilität: Anpassbar auf Ihre analytischen Anforderungen
- Optionale Bestimmung des Gesamtstickstoffs (TN) möglich.
- Die Analyse von Kohlenstoff in Flüssigkeiten ist für bestimmte Konzentrationen möglich.
- TOC400, ROC und TIC900 kann in nur einem Verfahrensschritt bestimmt werden. Hierzu werden die unterschiedlichen Bindungsformen des Kohlenstoffs mittels Temperaturrampe aus unterschiedlichen Zieltemperaturen unter oxidativen und pyrolytischen Bedingungen unterschieden.
- Alternativ kann auch das klassische Verfahren mittels Ansäuerung zur TIC Entfernung, Trocknung und anschließender TOC-Messung durchgeführt werden.
- DIN 19539 und DIN EN 15936/ISO 10694 konforme Analysen mit nur einem Gerät möglich.
Nutzerfreundliche Wartung: Komfortabel & werkzeuglos
- Wartung in Sekundenschnelle durch übersichtlich angeordnete, leicht zugängliche Systemkomponenten und ein werkzeugloses Klemmverbindungssystem.
- Die automatische Ascheentfernung sowie die herausragende Robustheit und Langlebigkeit des Gerätes reduzieren Wartungs- und Reparaturaufwände.
- Das werkzeuglose Klemmverbindungssystem sorgt jederzeit für ein dichtes, zuverlässiges Gerät ohne Leckage.
