High Precision Contact Lens Oxygen Permeability Analyzer ASTM Standard
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Standards
(1) ISO 18369 – Ophthalmic optics – Contact lenses – Requirements and test methods.
(2) GB/T 11417 – Contact lens oxygen permeability measurement.
(3) ANSI Z80.20 – American National Standard for Contact Lens Oxygen Permeability.
(4) ISO 9913-1 – Ophthalmic materials – Oxygen permeability of polymer materials.
(5) ISO 9913-2 – Ophthalmic materials – Polarographic method for Dk measurement.
Features
(1) Dual input design supports simultaneous measurement of two test electrodes.
(2) Polarographic measurement ensures high accuracy and reproducibility.
(3) Compatible with soft, hard, hydrogel, silicone hydrogel, and other high Dk lenses.
(4) Complete system integration with host, electrode assembly, central thickness gauge, and temperature/humidity control.
(5) Precision temperature control (0.0–50.0°C) with 0.1°C resolution and ±0.2°C accuracy.
(6) Adjustable electrode excitation voltage (0.750 VDC) for polarographic measurements.
(7) Current measurement range with multiple gear options for low- and high-permeability lenses.
(8) Compact and portable design suitable for laboratory use.
Technical Parameters
| Parameter | Specification |
|---|---|
| Dual Input | Supports 2 test electrodes simultaneously |
| Power Supply | 210–250V AC, 5 W |
| Temperature Control | 0.0–50.0°C (Resolution 0.1°C, Accuracy ±0.2°C) |
| Electrode Excitation Voltage | 0.750 VDC |
| Electrode Specifications | Gold cathode Ø4 mm; Silver anode inner Ø5.75 mm, outer Ø12.75 mm |
| Size (W×D×H) | 356 × 190 × 102 mm |
| Current Zero Adjustment | 0–100 nA |
| Current Measurement Gears | 19.99 nA (±10 pA), 199.9 nA (±100 pA), 1.999 μA (±1 nA), 19.99 μA (±10 nA), 199.9 μA (±100 nA) |
Accessories
(1) Electrode assembly frame with two electrode slots.
(2) Gold cathode and silver anode electrodes.
(3) Central thickness gauge for accurate lens measurement.
(4) Constant temperature and humidity chamber.
(5) Calibration and adjustment tools.
(6) User manual and compliance certificates.
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