If you want to ensure that you’ll always have some saline solution around, without paying an arm and a leg for it, here is the best homemade way to do it: Combine 1 pint water and 4 grams sodium chloride tablets (each tablet is 1 gram, so, 4 tablets per pint). For a quart, simply double to 8 tablets of 1 gram each. If using a granulated product (such as salt), use one teaspoon per pint, or two teaspoons per quart. DO NOT USE TABLE SALT; it probably contains added iodine, but it most surely will contain anti-caking agents, which you don’t want in your water for this purpose (It’s ok to use all natural salt, as long as it is iodine and caking agent free).