Corneal contact lens polarographic oxygen permeameter

Applicable standards:

Compliant with GB/T 11417.7-2012 (Physical and Chemical Performance Test Method 4.3.3) standard.

Main functions:

a. It is applicable to the measurement of various optical power rotating symptomatic geometric lenses, and also applicable to the modified oxygen permeability coefficient of rigid, non hydrogel, and hydrogel elastic contact lens material standard lenses. The principle is to measure the oxygen permeability coefficient of corneal contact lenses.

b. The display units of current can be divided into nA and μ A. The display allows for alternating display of current between two electrodes through switch conversion, which increases testing speed and reduces possible errors.

Main technical parameters:

1. LCD display speed: ≥ 75'high

2. Oxygen permeability measurement range: 0-145 × 10-11 (cm2/s [mLO2/(ml • hpa)]

3. Current measurement range: 0~200 μ A, including 5 gear ranges

4. Measurement accuracy: 5% increment of readings, ± 1 word

5. Electrode excitation voltage: 750VDC

6. Electrode temperature range: 0~50 ℃

7. Temperature accuracy: ± 0.2 ℃

8. Calibration current: 0~-100nA

9. Calibration voltage: 0~2V

10. Input: Options A and B can be connected to two electrode sensors simultaneously for measurement

11. Polarographic electrode: The cathode is made of 24K gold with a diameter of 4mm, and the anode is made of 99.9% silver