EXPEC SUPEC 5500 Online Potentiometric & Photometric Titrator

Overview

The EXPEC SUPEC 5500 Online Potentiometric & Photometric Titrator is an industrial-grade, fully automated titration platform engineered for continuous, unattended quantitative analysis in process-critical environments. It operates on dual measurement principles: potentiometric titration (based on potential change at indicator electrode vs. reference electrode) and photometric titration (based on absorbance shift at defined wavelengths during reaction endpoint detection). The system supports pH, redox, precipitation, and complexometric titrations—enabling precise determination of analytes such as chloride, bromide, cyanide, hydroxide, carbonate, acid value, alkalinity, and metal ion concentrations. Designed for 7×24 operation, it integrates directly into plant control networks via Modbus TCP or OPC UA, delivering real-time concentration data with traceable audit trails compliant with GLP and GMP frameworks.

Key Features

• Fully automated workflow: integrated auto-sampling, filtration, dilution, titration, rinsing, waste disposal, and result upload—no manual intervention required.
• High-precision fluid handling: 1/20,000 resolution syringe pump with ≤2% endpoint error and ≤1% RSD across repeated measurements.
• Multi-stream capability: supports up to four independent sample intake points with configurable priority sequencing and time-stamped acquisition logs.
• Multi-method flexibility: simultaneously enables potentiometric titration, photometric titration, colorimetric analysis, and direct potentiometry within a single instrument architecture.
• Corrosion-resistant construction: IP65-rated enclosure with micro-positive pressure sealing; electropolished stainless steel housing with epoxy-powder coating; all-wetted parts fabricated from PTFE, PFA, or chemically inert ceramics.
• Intelligent endpoint algorithms: adaptive dynamic titration, fixed-volume addition, equivalence-point balancing, temperature-compensated signal processing, and human-eye-mimicking photometric recognition logic.

Sample Compatibility & Compliance

The SUPEC 5500 accommodates aqueous, mildly acidic/alkaline, and low-viscosity organic matrices typical of refinery streams, leachates, electrolyte baths, and pharmaceutical intermediates. Sample inlet compatibility includes 4–20 mA analog signals, digital pulse inputs, and discrete I/O for external pump control. All analytical methods are structured to align with ASTM D974 (acid number), ASTM D2896 (base number), ISO 8235 (cyanide in metallurgical solutions), USP (titrimetric assays), and ISO/IEC 17025 documentation requirements. Data integrity safeguards include electronic signatures, user-access levels, and 21 CFR Part 11–compliant audit trail generation for calibration events, method changes, and result exports.

Software & Data Management

The embedded EXPEC TitraControl™ software provides browser-based configuration, method development, and remote diagnostics. Each analysis cycle generates a timestamped report containing raw sensor traces, derivative curves, equivalence point calculations, QC flagging, and metadata (e.g., ambient temperature, reagent lot ID, maintenance status). Export formats include CSV, PDF, and XML for integration into LIMS or MES platforms. Scheduled calibration checks, automatic drift compensation, and programmable blank subtraction ensure long-term metrological stability. System logs retain ≥12 months of operational history with SHA-256 hash verification for tamper-evident archiving.

Applications

• Petrochemical: Acid number/BN of lubricants, chloride in crude oil, bromine index in naphtha, sodium in catalyst streams.
• Metallurgy: Cyanide in gold leaching effluents, total rare earth oxides (TREO) in separation liquors, Zn²⁺/Fe²⁺/H₂SO₄ in zinc electrowinning electrolytes.
• Chemicals: Hydroxyl value in polyols, NaOH/Na₂SiO₃ in silicon wafer texturing baths, brine hardness in chlor-alkali cells.
• Power & Water: Boric acid in nuclear primary coolant, silica in boiler feedwater, Langelier Saturation Index (LSI) in recirculating cooling systems.
• Food & Beverage: Free SO₂ in wine, peroxide value in edible oils, ascorbic acid in fortified juices, titratable acidity in dairy products.
• Semiconductor: [Cu²⁺], [H₂SO₄] in electroplating baths; TMAH concentration in photoresist developers; H₂O₂ in CMP slurries.
• Pharmaceutical: Assay of active pharmaceutical ingredients (APIs), chloride/sulfate impurity quantification per ICH Q2(R2), residual catalyst metals in synthesis intermediates.

FAQ

What titration methods does the SUPEC 5500 support?
It supports potentiometric, photometric, colorimetric, and direct potentiometric modes—including pH, redox, precipitation, and complexometric endpoints.
Can the system operate without operator supervision for extended periods?
Yes—designed for 7×24 unattended operation with automatic cleaning cycles, reagent level monitoring, and fault-triggered alerts via email/SNMP.
How often does the system require calibration or maintenance?
Standard maintenance interval is every 7 days; sensor recalibration and titrant standardization can be scheduled automatically or triggered by QC sample deviation thresholds.
Is the wetted path compatible with aggressive reagents such as concentrated HCl or NaOH?
All fluidic components—including tubing, valves, titration cell, and electrodes—are constructed from PTFE, PFA, or glass-lined materials rated for continuous exposure to ≤5 mol/L HCl, ≤10 mol/L NaOH, and oxidizing agents including KMnO₄ and KBrO₃.
Does the system meet regulatory requirements for pharmaceutical or food-grade applications?
Yes—it supports 21 CFR Part 11 compliance through role-based access control, electronic signatures, and immutable audit trails; validated IQ/OQ protocols are available upon request.