Beiguang Jingyi BC-20A Online/Offline Total Organic Carbon (TOC) Analyzer

Overview

The Beiguang Jingyi BC-20A Online/Offline Total Organic Carbon (TOC) Analyzer is a dual-mode analytical instrument engineered for high-precision quantification of organic carbon content in ultrapure water systems. It operates on the principle of non-dispersive infrared (NDIR) detection following complete oxidation of organic compounds to CO₂. Oxidation is achieved via synergistic UV irradiation (using TiO₂-coated quartz reaction tubing) and persulfate chemistry under controlled acidic conditions—ensuring >95% oxidation efficiency across diverse organic matrices including low-molecular-weight acids, alcohols, and residual solvents. The resulting CO₂ is stripped from solution, carried through a delay coil to stabilize gas-phase concentration, and measured by a thermally stabilized NDIR sensor. This architecture eliminates reliance on catalytic combustion or membrane-based separation, reducing maintenance overhead while maintaining trace-level sensitivity and robust baseline stability. Designed explicitly for regulated environments, the BC-20A supports both continuous online monitoring (up to three parallel sample streams) and discrete offline laboratory analysis—enabling seamless integration into water system validation protocols without requiring duplicate instrumentation.

Key Features

• Pump-free fluidic design: Eliminates peristaltic tubing, pressure regulators, and associated consumables—reducing calibration drift, particulate shedding, and long-term operational cost.
• Dual-mode operation: Configurable for real-time online deployment (e.g., PW, WFI, UPW loops) or benchtop offline testing with identical metrological performance.
• High-fidelity flow control: Precision mass-flow regulation ensures consistent residence time in the UV/persulfate reactor, directly contributing to measurement reproducibility (<±0.001 mg/L).
• Embedded industrial-grade CPU: Enables real-time signal processing, adaptive baseline correction, and onboard diagnostics—including leak detection, lamp intensity monitoring, and sensor health assessment.
• Full data integrity architecture: Built-in audit trail (16 configurable event types), electronic signatures, and immutable raw data logging compliant with FDA 21 CFR Part 11 Annex 11 and EU GMP Annex 11 requirements.
• Modular connectivity: Standard Ethernet (TCP/IP), RS-232, and dry-contact relay outputs support integration into SCADA, MES, and LIMS platforms; optional USB data export for regulatory submission packages.

Sample Compatibility & Compliance

The BC-20A is validated for use with pharmacopeial water grades including Purified Water (PW), Water for Injection (WFI), and Ultrapure Water (UPW) per USP , EP 2.2.44, and ChP General Chapter 0861. Its oxidation efficiency meets ISO 8573-7:2019 criteria for trace organic quantification in compressed gases and liquid process streams. The instrument’s hardware and firmware are designed to satisfy computerized system validation (CSV) requirements under ICH Q9/Q10 frameworks. All software modules—including method configuration, user management, and report generation—support full ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available). Regulatory documentation packages (IQ/OQ/PQ templates, risk assessments, and traceability matrices) are provided upon request.

Software & Data Management

The BC-20A runs on embedded Linux-based firmware with a 7-inch capacitive color touchscreen interface supporting multi-language operation (English, Chinese, Spanish). Data acquisition occurs at 1 Hz resolution with automatic zero/scale verification every 24 hours. Raw conductivity and NDIR voltage traces are stored alongside metadata (operator ID, sample ID, timestamp, environmental temperature). Historical datasets (>5000 entries) are searchable by date range, event type, or numeric threshold. Optional audit trail module logs all critical actions—including method edits, calibration events, and user logins—with SHA-256 hashing for tamper evidence. Export formats include CSV, PDF (with digital signature), and XML for direct ingestion into electronic quality management systems (eQMS).

Applications

• Pharmaceutical water system qualification: Continuous TOC surveillance of PW/WFI distribution loops and point-of-use locations during commissioning and routine operation.
• Clean-in-place (CIP) and cleaning validation: Quantitative verification of organic residue removal from bioreactors, piping, and filtration housings per PDA Technical Report No. 29.
• Semiconductor UPW monitoring: Detection of ppb-level organics in sub-10 nm lithography rinse water where carbon-induced particle nucleation compromises yield.
• Power plant demineralized water: Early warning of condenser tube leakage or resin degradation through trending of baseline TOC shifts.
• Academic and contract research laboratories: Method development for novel oxidation chemistries or matrix-specific interference studies using programmable reaction parameters.

FAQ

Does the BC-20A require external calibration gases or reference standards?

No. The instrument uses internal CO₂ standardization via electrolytic generation and NDIR sensor auto-zeroing—eliminating dependency on certified gas cylinders or liquid TOC standards for daily operation.

Can the BC-20A be integrated into an existing DCS or PLC network?

Yes. Modbus TCP and OPC UA protocols are supported via Ethernet port; analog 4–20 mA output (optional) enables direct connection to legacy controllers.

Is the UV lamp life monitored and reported?

Yes. Real-time UV intensity is measured by a dedicated photodiode; remaining lamp service life is displayed and triggers predictive maintenance alerts.

What sample volume is required for offline analysis?

Only 15 mL per analysis cycle—compatible with standard volumetric flasks and syringe-driven injection ports.

How is data security enforced during remote access?

SSHv2 encryption, TLS 1.2 for web interface, and configurable session timeout ensure secure remote diagnostics and firmware updates without exposing raw data streams.