RXMARINE CHEMICAL TAG::
Wash the filter with about 15 ml of water, transfer the combined filtrate and washing to a 1-L volumetric flask, dilute to the mark with water, and mix.
Thirty-five chemical solutions, acids, bases, complexing, argentometric, reducing, oxidising, salts and eluent mixtures, were studied continuously over a 7.5-month period. Twenty-seven remained reasonably stable and had acceptable expiration dates, which were equal to or more than 2 months longer than the established average deviation of DŽ% relative to the initial value
Using an iodine solution, you can test for the presence of starch. When starch is present, the iodine changes from brown to blue-black or purple.