MIPO-5CL C-PVC High-Chlorine Content Analyzer
| Origin | France |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported Instrument |
| Model | MIPO-5CL |
| Pricing | Upon Request |
Overview
The MIPO-5CL C-PVC High-Chlorine Content Analyzer is a fully automated, microcoulometric combustion-titration system engineered for precise and trace-level quantification of total chlorine in chlorinated polyvinyl chloride (C-PVC), PVC resins, chlor-alkali process intermediates, and related halogen-rich organic matrices. It operates on the principle of high-temperature oxidative combustion followed by potentiometric microcoulometric titration using a silver/silver sulfide reference electrode pair. Sample material—whether solid granules, powder, or liquid—is introduced into a dual-zone combustion furnace where controlled pyrolysis (under He/O₂ atmosphere) ensures complete liberation of organically bound chlorine as hydrogen chloride (HCl). The gaseous HCl is swept into an electrolytic titration cell containing Ag⁺ ions; the stoichiometric reaction Ag⁺ + Cl⁻ → AgCl(s) consumes charge proportional to chlorine mass, enabling direct gravimetric calculation without external calibration standards. This method complies with ASTM D3176, ISO 10589, and GB/T 2917.1–2002 for halogen determination in polymers and industrial chemicals.
Key Features
- Microcoulometric detection with <1% relative standard deviation (RSD) across 0–100% Cl mass fraction, validated per ISO/IEC 17025 internal quality control protocols
- Two-stage programmable combustion furnace: F1 (He-purged pyrolysis zone, up to 1100 °C, ramp-controlled) and F2 (1000 °C oxidation zone with integrated O₂ injection nozzle and quartz reaction tube)
- Single-cell titration architecture with real-time charge integration, eliminating need for standard solutions, dilution series, or manual endpoint detection
- Sample introduction flexibility: accommodates 0.2–50 mg solid or 10–100 µL liquid samples via autosampler-compatible crucibles or micro-syringes
- Integrated drying and post-analysis purge cycle to prevent cross-contamination and ensure baseline stability between runs
- Modular design supports optional expansion: AOX adsorption module (for absorbable organic halides per ISO 9562), sulfur analysis kit (via SO₂ detection mode), and GLP-compliant audit trail firmware
Sample Compatibility & Compliance
The MIPO-5CL is validated for heterogeneous, thermally stable, and chlorine-dense matrices including rigid and flexible C-PVC compounds, PVC suspension/resin powders, chlorinated solvents (e.g., chloroform, carbon tetrachloride), and caustic brine sludge from membrane-cell chlor-alkali plants. It meets regulatory requirements for QC release testing under GMP Annex 18 (pharmaceutical excipients), EPA Method 1650 (AOX screening), and EN 14582 (halogen content in WEEE plastics). All combustion and titration parameters are logged with time-stamped metadata, supporting 21 CFR Part 11 compliance when paired with optional electronic signature and user-access-control software modules.
Software & Data Management
Instrument operation and data acquisition are managed via MIPO ControlSuite v4.x—a Windows-based application supporting method templates, multi-user permission levels, and automated report generation (PDF/CSV). Raw coulometric current-time integrals, furnace temperature profiles, and titration cell potential curves are stored in encrypted SQLite databases with configurable retention policies. Audit trails record all parameter modifications, sample re-runs, and calibration events. Export functions include LIMS-ready XML schema (ASTM E1384) and spectral overlay for inter-laboratory comparison studies.
Applications
- Quality assurance of C-PVC pipe compound batches prior to extrusion (specification range: 63–67% Cl)
- Batch-to-batch consistency monitoring in vinyl chloride monomer (VCM) polymerization reactors
- Chlorine balance auditing in membrane-cell electrolysis units (anolyte/catholyte stream analysis)
- Regulatory screening of halogenated flame retardants (e.g., deca-BDE degradation products) in recycled plastic feedstocks
- Method transfer validation between R&D labs and contract testing facilities under ISO/IEC 17025 accreditation scopes
FAQ
What sample preparation is required prior to analysis?
No acid digestion, solvent extraction, or pre-concentration is needed. Solid samples are weighed directly into quartz boats; liquids are injected via gastight syringe. Moisture content >5% should be pre-dried at 60 °C under N₂.
Can the system quantify chlorine speciation (e.g., organic vs. inorganic Cl)?
No—the MIPO-5CL reports total extractable chlorine only. Speciation requires coupling with IC-MS or XPS, though AOX mode provides semi-quantitative organic halogen screening.
Is routine maintenance limited to consumables?
Yes. Primary consumables include quartz combustion tubes (replaced every 500 analyses), AgNO₃ electrolyte (replenished weekly), and ceramic crucibles. Furnace thermocouples and titration cell electrodes are rated for ≥2 years continuous use.
Does the instrument support remote diagnostics?
Yes—via optional Ethernet-connected service port with TLS-encrypted VNC access for certified field engineers; firmware updates delivered through secure HTTPS repository.
