Packaging and storage—
Preserve in glass or plastic containers. Glass containers are preferably of Type I or Type II glass.
Labeling—
Label it to indicate that it is for inhalation therapy only and that it is not for parenteral administration.
pH 
791
:
between 4.5 and 7.5, in a solution containing 0.3 mL of saturated potassium chloride solution per 100 mL of test specimen.
Ammonia—
For containers having a fill volume of less than 50 mL, dilute 50 mL of it with 50 mL of
High-Purity Water (see
Reagents under
Containers 661), and use this dilution as the test solution; where the fill volume is 50 mL or more, use 100 mL of it as the test solution. To 100 mL of the test solution add 2 mL of alkaline mercuric–potassium iodide TS: any yellow color produced immediately is not darker than that of a control containing 30 µg of added ammonia (furnished by using 1.76 mL of 1.0 N ammonium hydroxide) in 100 mL of
High-Purity Water. This corresponds to a limit of 0.6 mg per L for containers having a fill volume of less than 50 mL and 0.3 mg per L where the fill volume is 50 mL or more.
Chloride—
To 20 mL in a color-comparison tube add 5 drops of nitric acid and 1 mL of
silver nitrate TS, and gently mix: any turbidity formed within 10 minutes is not greater than that produced in a similarly treated control consisting of 20 mL of
High-Purity Water (see
Reagents under
Containers 661) containing 10 µg of chloride (0.5 mg per L), viewed downward over a dark surface with light entering the tubes from the sides.
Oxidizable substances—
To 100 mL add 10 mL of 2 N sulfuric acid, and heat to boiling. For Sterile Water for Inhalation in containers having a fill volume of less than 50 mL, add 0.4 mL of 0.1 N potassium permanganate, and boil for 5 minutes; where the fill volume is 50 mL or more, add 0.2 mL of 0.1 N 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.
