Total Organic Carbon (TOC) is the authoritative indicator for organic contamination control, widely used in pharmaceutical, semiconductor, power and environmental sectors. Superior to COD/BOD, TOC enables precise organic content quantification. As global water quality standards tighten, professional understanding of TOC metrics, detection principles and instrument selection is essential for industrial water compliance. This document summarizes TOC detection knowledge and features the high-performance ERUN-SP3-J3 TOC analyzer.
Four core carbon indicators define water organic and inorganic carbon levels:
TC (Total Carbon): Sum of all organic and inorganic carbon (TC = TOC + TIC).
TIC (Total Inorganic Carbon): Inorganic carbon including dissolved CO₂, carbonates and bicarbonates, measured by acidification and degassing.
TOC (Total Organic Carbon): Core water quality index, calculated by TC-TIC for general water sample analysis.
NPOC (Non-Purgeable Organic Carbon): Stable organic carbon residue after purging, applicable for drinking water, surface water and groundwater testing.
TOC analyzers quantify organic pollutants by oxidizing water-borne organics into CO₂ and detecting CO₂ concentration via two core technical modules: oxidation and detection.
UV Photocatalytic Oxidation: Reagent-free, gas-free and maintenance-free, with 0.1 μg/L ultra-low detection limit, ideal for high-purity and pharmaceutical water.
UV + Persulfate Oxidation: High oxidation strength for conventional pharmaceutical and environmental water, requiring regular reagent replacement.
High-Temperature Combustion: Suitable for wastewater and high-salt complex water, yet high energy consumption and insufficient precision for ultrapure water.
NDIR Detection: Standard industrial method compliant with EPA, ISO and USP for universal scenarios.
Direct Conductivity Detection: Consumable-free, high-sensitivity solution optimized for pharmaceutical and semiconductor ultrapure water.
Membrane Conductometry: Ultra-high selectivity for trace organic carbon detection in ultrapure water.
Optimal Industry Solution: UV photocatalytic oxidation + direct conductivity detection, achieving high precision, low operation cost and full compliance for high-purity water applications.
Instrument range must match onsite water quality conditions to ensure accurate and stable detection:
Water Type | Typical TOC Range | Recommended Range |
Ultrapure Water | 1–50 µg/L | 0.1–100 µg/L |
Water for Injection / Purified Water | 10–500 µg/L | 0.1–1000 µg/L |
Drinking Water | 1–5 mg/L | 0.1 µg/L–10 mg/L |
Industrial Wastewater | 5–500 mg/L | 1–1000 mg/L |
Pharmaceutical water testing requires compliance with USP <643>, EP 2.2.44 and CP standards with complete data traceability. Environmental detection needs to meet EPA, ISO and ASTM criteria.
Reagent-free modular instruments greatly reduce long-term maintenance expenses. Dual-mode (online/offline) devices adapt to real-time process monitoring and laboratory batch testing for diversified industrial demands.
ERUN-SP3-J3 is a high-precision benchtop TOC analyzer adopting reagent-free UV catalytic oxidation and conductivity detection. Designed for pharmaceutical, power, electronics and drinking water industries, it delivers high accuracy, low maintenance and full regulatory compliance for high-purity water detection.
Detection Range: 0.1~1000.0 μg/L
Test Items: TOC, TIC, TC, NPOC, conductivity, water temperature
Precision: 0.1 μg/L resolution, ≤±5% accuracy error, ≤3% repeatability
Stability: ±2%/D zero drift & range drift
Analysis Cycle: 3–5 minutes per sample
Configuration: 8-inch touch screen, 32GB storage, USB export & printing
Working Conditions: 0~40℃ ambient temperature, 0~100℃ water sample temperature
Power: 220VAC±10% / 12V DC, 60W
Dimension & Weight: 276*132*198mm, 5Kg
No Consumables & Low Cost: No acid, catalyst or carrier gas required, supporting green and low-cost operation.
Full Compliance: Compliant with global pharmacopoeia standards and FDA 21 CFR Part 11 for reliable data audit.
Dual-Mode Flexible Use: Supports online/offline switching, compatible with autosamplers for unattended batch testing.
Easy Maintenance: Modular structure for fast servicing, with automatic over-limit alarm.
International Certification: CE, ISO 9001 and RoHS certified for global industrial application.
Widely applied for pharmaceutical WFI and purified water testing, power plant water monitoring, semiconductor ultrapure water analysis, municipal drinking water inspection and industrial deionized water quality control, effectively avoiding organic contamination-related production risks and non-compliance issues.
Erun is a professional manufacturer and global supplier of industrial water quality analyzers and sensors. We provide standardized and customized certified TOC detection solutions for pharmaceutical, power, electronic and environmental monitoring industries worldwide.
