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Preservative-free artificial formulations are indicated for patients who cannot tolerate artificial tear formulations with preservatives, patients who are using artificial tears more than four to six times a day, [10] and patients who are using multiple topical eye drops with preservatives. [9] Preservative-free eye drops are found in single vials.
Eye drops are being recalled due to a rare bacterium found in artificial tears. Find a list of recalled drops in 2023. Plus, eye infection symptoms.
Potassium metabisulfite is a common wine or must additive, in which it forms sulfur dioxide (SO 2).Sulfur dioxide is a disinfectant. It also acts as a potent antioxidant, protecting both the color and delicate flavors of wine.
Cryopreservation is an effective way to transport biological samples over long distances, store samples for prolonged periods of time, and create a bank of samples for users. Molecules, referred to as cryoprotective agents (CPAs), are added to reduce the osmotic shock and physical stresses cells undergo in the freezing process. [ 2 ]
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