On-line Total Organic Carbon Analyzer

TOC-700M-OL

The TOC-700M-OL online total organic carbon analyzer is an instrument for determining the concentration of total organic carbon in water samples. It can detect TOC concentrations ranging from 0.001 mg/L to 100.0 mg/L, featuring high sensitivity, accuracy, and good stability.

Key Features

UV/persulfate-NDIR, 0.001-100mg/L

7" touch, 4 modes, gold NDIR, precise pump

Audit trail & access, GMP/21 CFR 11

Inquiry

Batch Inquiry

Description
Accessories
Download
Products FAQ

Brand: LabNav
Commodity name: On-line Total Organic Carbon Analyzer
Commodity ID: TOC-700M-OL
产品卖点1: UV/persulfate-NDIR, 0.001-100mg/L
产品卖点2: 7" touch, 4 modes, gold NDIR, precise pump
产品卖点3: Audit trail & access, GMP/21 CFR 11

Product Details

7-inch touch screen operation.

Working Principle

Difference method: The sample is fully oxidized to carbon dioxide and water by UV/persulfate oxidation. After condensation and dehydration, CO₂ is measured using a non-dispersive infrared (NDIR) detector to determine total carbon (TC) content. The inorganic carbon in the sample is decomposed into carbon dioxide and water by the acid reagent. After condensation and dehydration, CO₂ is measured by NDIR to determine total inorganic carbon (TIC) content. TOC = TC – TIC.
Direct method: The inorganic carbon in the sample is first decomposed into carbon dioxide and water by an acid reagent to remove total inorganic carbon (TIC). Then the organic carbon in the sample is decomposed into carbon dioxide and water by UV/persulfate oxidation. After condensation and dehydration, CO₂ is measured by NDIR to directly determine TOC content.

Measurement Modes

Mode	Operating Principle
TC mode	Determines total carbon in the sample. The sample in the UV reactor is decomposed into CO₂ under the action of oxidant, acid reagent, and UV.
TIC mode	Determines inorganic carbon (carbonate and bicarbonate) in the sample. In the UV reactor, carbonate and bicarbonate are decomposed into CO₂ by acid reagent.
TOC mode	Determines organic carbon in the sample. TOC is measured by difference: TOC = TC – TIC. The sample sequentially measures TC and TIC; The TOC obtained by difference includes both volatile and nonvolatile organic carbon.
NPOC mode	Determines nonpurgeable organic carbon in the sample. In the UV reactor, inorganic carbon is decomposed by acid reagent to CO₂ and purged, while volatile organic compounds are also purged. The remaining organic carbon is then decomposed into CO₂ by oxidants, acid reagents, and UV.

Applications

Petrochemical industry, Surface water, Drinking water, Circulating cooling water, Seawater

Software Description

The software meets GMP computerized system validation requirements:
Electronic Signature
Login via username and password, each unique.
Password length requirements enhance security.
The manual screen lock function ensures operational uniqueness and safety.
Access Control
Multi-level permission settings.
Administrators can assign different permissions to operators, ensuring personnel only have privileges commensurate with their job functions.
Data Integrity
The audit trail function is enabled and cannot be turned off.
All test results are saved and cannot be modified or deleted.
All operations (any user entry) are recorded.
If a test method is modified, the changed parameters are recorded.
Data can be exported and backed up to protect stored data for future retrieval.

Features

Four detection modes: TC, TIC, TOC, and NPOC, all in the same reactor.
A high-reflectivity gold-plated gas cell, a high-concentration infrared light source, and a high-sensitivity infrared detector ensure excellent NDIR performance and sufficient sensitivity and accuracy for ppb-level measurements.
A precision electromagnetic metering pump ensures accuracy and stability of sample injection volume.
Dual-tube electronic condensation dehydration technology;
Real-time visible detection curve for better visualization;
Multiple real-time self-monitoring functions for temperature, pressure, and flow rate;
User-definable calibration curve based on range, suitable for any water sample measurement.

Specifications

Analysis Method	UV/persulfate oxidation – NDIR detection principle
TOC Detection Range	0.001 mg/L – 100.0 mg/L
Carrier Gas	High-purity nitrogen (CO₂-free air)
Oxidant	Sodium persulfate solution
Analysis Time	3–8 min
Accuracy Error	±5%
Repeatability Error	≤3 %
Ambient Temperature	0–40 ℃
Relative Humidity	≤ 85%
Detectable Items	TC, IC, TOC, NPOC
Injection Volume	50–6000 μL
Sample Temperature	0–100 °C
Acid Reagent	Phosphoric acid solution
TOC Detection Precision	0.001 mg/L
Zero Drift	±2 %/D
Span Drift	±2 %/D
Power Supply	220 ± 22 V AC, 50 ± 1 Hz
Power Consumption	60 W
Dimensions (W×D×H)	47 cm × 48.5 cm × 115.5 cm
Weight	75 kg