I. Purpose
The purpose of this test was to test the compatibility of polarized polycarbonate lenses with low-foaming neutral VALTRON detergents.
II. Parameters of the Experiment
- Conditioning of the Substrates:
Several trays of gray and brown polycarbonate lenses were submitted for testing along with a sample of PM solvent for final wiping. No further conditioning was necessary.
- Preparation of Detergent Solutions:
4% VALTRON DP048 neutral low-foaming detergent
4% VALTRON SW4110 neutral low-foaming detergent
4% VALTRON DP95013 neutral low-foaming detergent
500mL each of the above detergent solutions was prepared in separate stainless steel trays using deionized water. The solutions were heated to and maintained at 140°F/60°C.
III. The Experiment
- A gray lens was examined under a high-intensity light source and any cracks or scratches were noted.
- 500mL of 4% VALTRON DP048 was prepared in a stainless steel tray. The solution was heated to and maintained at 140°F/60°C.
- A gray lens was placed in the detergent solution and soaked for 10 minutes.
- The lens was removed from the solution and was given a 15-second spray rinse of low-pressure deionized water at room temperature.
- Next, the lens was given a final wipe with PM solvent.
- The substrate was allowed to dry and then examined under a high-intensity light source for any microcrazing.
- Steps 1-6 were repeated with the gray and brown lenses using 4% VALTRON DP048, 4% VALTRON SW4110 and 4%VALTRON DP95013.
- The results are summarized in Table 1.
IV. Results
Table 1: Compatibility Testing of Polarized Polycarbonate Lenses with VALTRON Detergents
| Gray |
DP048 |
4 |
10 |
140/60 |
No microcrazing observed. Solution was cloudy |
| Brown |
DP048 |
4 |
10 |
140/60 |
No microcrazing observed. Solution was cloudy |
| Gray |
SW4110 |
4 |
10 |
140/60 |
No microcrazing observed. Solution was cloudy |
| Brown |
SW4110 |
4 |
10 |
140/60 |
No microcrazing observed. Solution was cloudy |
| Gray |
DP95013 |
4 |
10 |
140/60 |
No microcrazing observed |
| Brown |
DP95013 |
4 |
10 |
140/60 |
No microcrazing observed |
*Small cracks and scratches were visible on the lenses and were noted before testing.
V. Conclusion
The low-foaming neutral VALTRON detergents evaluated in this experiment are compatible with the polarized polycarbonate lenses. No microcrazing or damage to the lenses was observed following the completion of the experiment.
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