Elementar rapid OXY cube Organic Elemental Analyzer
| Brand | Elementar |
|---|---|
| Origin | Germany |
| Model | rapid OXY cube |
| Measured Element | Oxygen (O) |
| Detection Principle | High-Temperature Pyrolysis to CO + Thermal Conductivity Detection |
| Temperature Range | Up to 1450 °C |
| Accuracy | < ±0.1% (relative) |
| Sample Mass Range | 1–300 mg |
| Standard Autosampler | 120-position integrated |
| Detector Warranty | 10 years on thermal conductivity cell |
| Interference Suppression | Patented column purge technology |
| Compliance | Designed for GLP/GMP environments |
Overview
The Elementar rapid OXY cube is a dedicated high-temperature pyrolytic elemental analyzer engineered exclusively for the precise, interference-free quantification of oxygen in organic and inorganic solid and liquid matrices. Unlike general-purpose CHNS/O analyzers, the rapid OXY cube employs a purpose-built thermal decomposition architecture optimized for quantitative oxygen conversion—ensuring stoichiometric transformation of all oxygen atoms into carbon monoxide (CO) at temperatures up to 1450 °C. This elevated pyrolysis temperature suppresses CO₂ formation and maximizes CO yield, enabling matrix-independent quantification without empirical correction factors. The system leverages a dual-stage gas purification strategy: first, patented column purge technology actively removes reactive byproducts (e.g., H₂O, NOₓ, SO₂, halogenated compounds) prior to detection; second, a high-stability thermal conductivity detector (TCD) delivers long-term baseline stability and minimal drift. The result is a robust, reference-grade measurement platform delivering sub-0.1% relative accuracy across heterogeneous sample types—including coal, petroleum fractions, pharmaceutical intermediates, and specialty chemicals—under routine laboratory conditions.
Key Features
- Dedicated oxygen analysis architecture with furnace operating up to 1450 °C for complete, non-catalytic oxygen-to-CO conversion
- Patented column purge technology eliminating co-eluting interferences without consumable traps or frequent maintenance
- Integrated 120-position autosampler with gravimetric sample weighing interface and inert atmosphere sample handling
- Thermal conductivity detector backed by a 10-year warranty—engineered for reproducibility and low signal drift over extended operation
- Zero-blank sample transfer mechanism utilizing a precision-engineered ball-valve system to prevent ambient oxygen ingress
- Modular gas management with automated leak-check routines and real-time pressure monitoring for method integrity assurance
Sample Compatibility & Compliance
The rapid OXY cube accepts solid samples ranging from 1 mg to 300 mg—including powders, pellets, granules, and filter media—as well as liquid samples via optional quartz boat or micro-vial adapters. Validated applications span ASTM D5291 (oxygen in petroleum products), ISO 20846 (oxygen in automotive fuels), USP (heavy metals and residual oxygen in pharmaceutical excipients), and internal QC protocols for battery cathode materials and polymer additives. Instrument design adheres to IEC 61000-6-3/6-4 electromagnetic compatibility standards and includes hardware-level audit trail logging. When paired with optional Elementar’s vario LINK software, full 21 CFR Part 11 compliance is achievable—including electronic signatures, user access tiers, and immutable raw data archiving.
Software & Data Management
Control and evaluation are performed via Elementar’s vario LINK software suite—a Windows-based application supporting method development, sequence scheduling, real-time chromatogram visualization, and automated calibration curve generation. All raw detector signals, furnace thermocouple logs, gas flow parameters, and autosampler event timestamps are stored in a structured SQLite database with SHA-256 hash verification. Export options include CSV, PDF analytical reports, and LIMS-ready XML formats compliant with ASTM E1384 and ANSI/NIST ITL 100-3. Audit trails record operator ID, timestamp, parameter changes, and result overrides—retained for ≥36 months per GLP requirement.
Applications
- Quality control of coal and coke for oxygen content specification (ASTM D3176)
- Oxygen determination in lithium transition metal oxides (NMC, LCO) for battery material certification
- Residual oxygen quantification in pharmaceutical active ingredients and polymers per ICH Q5C
- Speciation support for environmental analysis of oxygen-containing contaminants in soil extracts
- Research-grade oxygen stoichiometry validation in metal-organic frameworks (MOFs) and catalyst supports
- Refinery feedstock screening for oxygenate content in bio-blended fuels
FAQ
What is the maximum recommended sample mass for accurate oxygen quantification?
The optimal range is 5–200 mg for solids; up to 300 mg may be used for low-oxygen matrices with extended integration time.
Can the rapid OXY cube analyze samples containing fluorine or chlorine?
Yes—the column purge system effectively removes HF and HCl vapors; however, high-halogen samples require quartz liner replacement after every 50 analyses.
Is external calibration required before each batch?
No—system calibration is performed using certified reference materials (e.g., benzoic acid, sucrose) during initial setup; daily verification with a control standard suffices.
Does the instrument support regulatory audit readiness out of the box?
Hardware-level event logging is native; full 21 CFR Part 11 compliance requires vario LINK software with licensed security modules and validated installation.
How often does the thermal conductivity detector require recalibration?
Under normal use, TCD zero/balance adjustment is needed only after major maintenance or ambient temperature shifts >5 °C; factory calibration remains valid for 24 months.
