Packaging and storage
Preserve in suitable, tight containers.
Label it to indicate the method of preparation and that it is not for parenteral administration.
Water conductivity 645
Perform Stage 2, Step 4
using a sufficient amount of water to perform the test. The conductivity is not more than 25 µS/cm for containers with a nominal volume of 10 mL or less at 25 ± 1
; and not more than 5 µS/cm for containers with a nominal volume greater than 10 mL at 25 ± 1
To 100 mL, add 10 mL of 2 N sulfuric acid, and heat to boiling. For Sterile Purified Water in containers having a fill volume of less than 50 mL, add 0.4 mL of 0.02 M potassium permanganate, and boil for 5 minutes; where the fill volume is 50 mL or more, add 0.2 mL of 0.02 M potassium permanganate, and boil for 5 minutes. If a precipitate forms, cool in an ice bath to room temperature, and pass through a sintered-glass filter: the pink color does not completely disappear.