Water analyzer TOC-20

liquidsfoodlaboratory

Applications
On-line real-time monitoring and offline laboratory testing of pharmaceutical waters (purified water, water for injection) and cleaning validation. Also suitable for environmental monitoring, electronics, food industry and R&D laboratories.

Main features

• Dual-mode operation: selectable real-time (on-line) and off-line testing for flexible deployment.
• UV-oxidation with direct conductivity detection for reliable TOC measurement without added reagents.
• Wide dynamic range: 0.001 mg/L (1 μg/L) – 1.5 mg/L (1500 μg/L) with 0.001 mg/L resolution.
• No liquid pump tubing design reduces consumables and simplifies installation while stabilizing flow.
• High-performance CPU for faster processing and improved precision.
• Color touch screen with intuitive user interface for straightforward operation.
• Built-in data storage and audit trail: ≥5 years; user/account management compatible with FDA 21 CFR Part 11.
• Automatic alarm and error notification for abnormal readings.
• Expandable interfaces: Ethernet, RS232, 4–20 mA, power output; PC software and external mini printer supported.
• Custom programs available via independent R&D to meet specific customer workflows.

Operation principle
Organic compounds are oxidized by a UV lamp converting organics to CO2; TOC is determined by direct conductivity measurement: TOC = TC(after oxidation) − TIC(not oxidized). This reagent-free method reduces running costs and maintenance.

Schematic Diagram (direct conductivity method)

• 1 — Delay line
• 2 — Oxidation unit (UV lamp)
• 3 — Inorganic carbon conductivity electrode
• 4 — Total carbon conductivity electrode
• 5 — Ceramic pump

Illustrations / Images referenced on the product page (descriptive, not links)
Product images on the page illustrate the instrument exterior, user interface and internal layout to assist assessment and installation planning.

Specifications
Model: TOC-20
Power: 100–240 VAC, 50 Hz, 120 W
TOC detection range: 1 μg/L – 1500 μg/L (0.001–1.5 mg/L)
Conductivity detection range: 0.055 μS/cm – 8.000 μS/cm
Detection limit / Resolution: 0.001 mg/L
Accuracy / Repeatability: ≤ ±3%
Response time: within 5 minutes
Sample temp: 1–95 °C; Ambient: 5–65 °C
Dimensions: approx. 400–410 × 240 × 270–310 mm
Weight: 8.5 kg
Display: Color touch screen; Resolution: 0.001 mg/L
Data & audit trail: ≥5 years storage; U-disk export; PC software available
Compliance: Chinese Pharmacopoeia, USP <643>, EP <2.2.44>, FDA 21 CFR Part 11 (authority management)
Interfaces: Ethernet, RS232, 4–20 mA, power output

Technical characteristics

• Model: TOC-20
• Power requirements: 100–240 VAC, 50 Hz, 120 W
• Measuring range: 0.001 mg/L – 1.5 mg/L (1500 ppb)
• Conductivity range: 0.055 μS/cm – 8.000 μS/cm
• Detection limit / Resolution: 0.001 mg/L
• Accuracy / Repeatability: ≤ ±3%
• Response time: ≤5 minutes
• Temperature range (sample): 1–95 °C; (ambient): 5–65 °C
• Dimensions & weight: ~400–410 × 240 × 270–310 mm; 8.5 kg
• Display: color touch screen; Storage & export: U-disk, PC software, external mini printer
• Audit & security: ≥5 years history, username/password management, level 4 permissions (FDA 21 CFR Part 11 support)
• Expansion: Ethernet, RS232, 4–20 mA, power output