OTR tester C203H

calibrationchemicalfor medical devices

Overview
The C203H Oxygen Transmission Rate (OTR) test system is a Coulometric-sensor based, equal-pressure OTR tester compliant with ASTM D3985. It is engineered for high-precision OTR measurement of films, sheets and other barrier materials used in food, pharmaceutical, medical device, chemical, photovoltaic and electronics industries. The instrument supports medium-to-high barrier materials and multi-sample throughput with automated operation.

Product Features

• Coulometric Oxygen Sensor
  • Labthink ppb-level coulometric sensor for very low detection limits.
  • Absolute-value design per ASTM D3985; no routine calibration required.
  • Extended service life (approx. 3× conventional sensors) with over-limit alarm and automatic protection.
• Accurate, Stable Data
  • 360° air-circulation constant-temperature system for improved thermal stability.
  • High-precision temperature and humidity sensors for real-time monitoring and recording.
  • Automatic control of flow, temperature and relative humidity during tests; high repeatability down to 0.01 cc/(m2·day).
• Efficient Three-Cell Design
  • Three independent test cells (50 cm² standard area) for parallel testing and independent data per sample.
  • Simultaneous testing of three samples under identical conditions increases throughput per cycle.
  • Automatic sample clamping for consistent clamping force and improved sealing.
• Intelligent Operation
  • 12-inch Windows touch panel for convenient operation and data input.
  • Automatic mode: set temperature and humidity, start with one key for unattended tests.
  • Drawer-style test cells with one-key automatic in/out and audible/visual reminders.
• Safety and Reliability
  • Embedded industrial computer architecture to reduce system failures and secure data storage.
  • Optical and other sensors with sound and light alarms for safe operation.
  • Use of globally recognized brand components for consistent performance.
• Powerful Outputs & Options
  • Professional test modes and flexible control functions for R&D and QC.
  • Outputs: OTR curve, oxygen transmission coefficient curve, temperature and humidity curves.
  • Wide test and temperature ranges (customizable) to meet diverse barrier testing needs.
  • Optional GP-01 gas purification unit for oxygen-free carrier gas and DataShield™ data management (optional compliance features available).

Testing Principle

• The sample is clamped between two chambers; oxygen/air flows on one side and high-purity nitrogen on the other. Oxygen diffuses through the sample into the nitrogen stream and is carried to the coulometric sensor. The sensor measures oxygen concentration and the system calculates OTR from that data.

Reference Standards

• ASTM D3985
• ASTM F1307
• ASTM F1927 (optional)
• GB/T 19789
• GB/T 31354
• DIN 53380-3
• JIS K7126-2-B
• YBB 00082003-2015

Test Applications

• Films - OTR testing for plastic films, paper-plastic composite films, co-extruded films, aluminized films, aluminum-foil composite films, glass-fiber/aluminum/foil/paper composites and similar materials.
• Sheets - OTR testing for PP, PVC, PVDC sheets, metal foils, rubber sheets, silicon sheets and other sheet materials.

Technical Specifications (summary)

• Model: C203H
• Standard test area: 50 cm² (per cell)
• Test range (50 cm²): 0.01–200 cc/(m²·day); optional 0.005–200; extended/custom up to 400000 cc/(m²·day)
• Mask/alternate areas: 5 cm² (0.1–2000 optional); 1 cm² (0.5–10000 optional)
• Resolution: 0.0001 cc/(m²·day)
• Repeatability: 0.01 cc/(m²·day) or 1%, whichever is greater
• Temperature range: 15–50 °C standard; 5–60 °C optional; fluctuation ±0.05 °C
• Humidity range: O2 side 0%, 5–90% ±1%; carrier gas side 0%, 5–90% ±2%
• Test cells: 3 independent 50 cm² cells
• Sample size: 4.4” x 4.4” (11.2 cm × 11.2 cm); thickness ≤ 120 mil (3 mm)
• Gas: N2 99.999%, O2 99.5% (gas sources supplied by buyer)
• Air source pressure: ≥ 40.6 PSI / 280 kPa
• Interface: 1/8" metal tube
• Dimensions: approx. 60 cm × 50 cm × 70 cm
• Power supply: 120 VAC ±10% 60 Hz or 220 VAC ±10% 50 Hz
• Net weight: ≈ 100 kg (220 lbs)
• Standard configuration: mainframe, tablet computer, sampler, vacuum grease, Ø6 mm polyurethane tube
• Options: GP-01 Gas Purification Unit, DataShield™, GMP/CFR21 Part 11 options, air compressor