https://www.ft.com/content/4593b93e-1887-11e8-9376-4a6390addb44

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There has been a shortage of medical grade saline for years. I prefer to go with the 15ml vials-- I like to use them to rinse my lenses as well as to fill the lens. I've found that it greatly increases my insertion success, and prevents midday fogging.

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https://www.amazon.com/gp/product/B00XCQ44TC/ref=oh_aui_search_detailpage?ie=UTF8&psc=1