Hello,
The natural pH of tear fluid is 7.4; however, discomfort for the user Will not be felt as long as the pH of the administered medication stays in the ranks of 6.6-7.8.
have you controlled the ph?
The natural pH of tear fluid is 7.4; however, discomfort for the user Will not be felt as long as the pH of the administered medication stays in the ranks of 6.6-7.8.
have you controlled the ph?
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