Modes
The UNICUBE is optimized for the analysis of:-
CHNS
-
CHN
-
CNS
-
CN
-
O*
-
Cl*
* optionally available
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.
Element concentration range
Large dynamic concentration range:
-
C: Up to 14 mg absolute or 0 - 100 % (0 - 50 mg in CN mode*)
-
H: Up to 2 mg absolute or 0 - 100 %
-
N: Up to 10 mg absolute or 0 - 100 %
-
S: Up to 3 mg absolute or 0 - 100 %
-
O*: Up to 6 mg absolute or 0 - 100 %
-
Cl*: Up to 1.2 mg absolute or 0 - 100 %
Precision
< 0.1 % absolute (homogeneous substance), depending on sample type, analysis mode, and configuration
Analysis time
≥ 7 min for simultaneous CHNS determination, 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)
- Infrared (IR) Detector* for sulfur and oxygen
- Electrochemical Detector* for chlorine
Maximum furnace temperature
1,200 ° C (whereby 1,800 °C is briefly reached at the combustion point when using tin foil)
Required gases
Helium or argon and oxygen
Purge and trap chromatography:
Separation of gaseous components via our TPD column. This column releases individual gases at different temperatures. The release of a gas is only initiated when the prior gas peak has reached baseline. This results in perfect peak separation without overlap, and automatic optimization of the analysis time.
Sample introduction
- Integrated 60*, 80*, 120, or 240* 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® 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.
Audit-ready: Instrument qualification &
21 CFR Part 11 software option
- Quick and reliable IQ/OQ/vendor PQ, executed by trained service engineers using only certified measuring devices.
- Easy-to-grasp qualification documents delivered in a binder, to which all appendices are added.
- All necessary reference materials are supplied.
- User-friendly 21 CFR Part 11 software option for guaranteed data integrity.
Highly reliable analytical results: Even for the most challenging samples
- Optimal combustion thanks to a lance, that delivers oxygen directly to the point of combustion.
- Intelligent peak separation, which adjusts dynamically to each individual sample.
- Interference-free sulfur analysis as well as trace sulfur analysis thanks to an optional infrared detector, whose signal can be read out together with CHNS via thermal conductivity detector.
- Extremely low nitrogen blanks as ambient air is effectively flushed away with our patented ball valve technology before start of the analysis.
Wide range of use: Big dynamic range & great sample variety
- Besides the determination of C, H, N and S (simultaneously if desired), the UNICUBE® has optional oxygen and chlorine analysis capabilities.
- Covers an unusually big dynamic range – especially on the higher end thanks to the big capacity of the column for gas separation.
- Even big samples such as 1 g of soil or an entire 45 mm filter can be analyzed without issues.
- No matter if solid, liquid, viscous, or gaseous – the UNICUBE® offers a suitable and convenient method of introduction for your sample.
- ≤ 14 mg C (≤ 50 mg C im CN-Modus) bzw. (≤ 50 mg C in CN mode)
- ≤ 2 mg H
- ≤ 10 mg N
- ≤ 3 mg S
- ≤ 6 mg O
- ≤ 1,2 mg Cl bzw. 1.2 mg Cl
Protected against gas supply shortages: Low gas consumption & easy carrier gas switch
- Low gas consumption as gas flow is set to 0 automatically, when no analysis run is taking place.
- A 50 l helium bottle with 180 bar lasts for 2,900 CHNS-measurements.
- Easy change between helium and argon with the flip of a switch.
- No hardware adjustments necessary when switching the carrier gas; only a carrier gas specific calibration needs to be present.
Pleasant & easy to work with: Low-maintenance instrument design
- Little maintenance thanks to a long-lasting calibration, an unusually big ash collector as well as separate combustion and reduction tubes.
- Fast maintenance due to clearly arranged, easily accessible system components and tool-free clamp connections.
- Unusually quiet thanks to an improved ventilation system.
- Samples can be added to the autosampler (60*, 80*, 120 or 240* positions) at any time – even in the middle of an analysis run.
*optional configuration
Software that makes your life easy: Unattended, user-friendly operation
- One glance at the software`s “traffic light”-bar tells you if you are ready for analysis.
- Gas flows, pressures and other critical information is always displayed.
- A counter keeps track of how many more samples can be run before the next maintenance task is due.
- Unattended overnight operation possible thanks to auto sleep and event-monitoring functions.
- The Windows® based operating software features LIMS integration, automated backups and 21 CFR Part 11 compliant functionality.
