Medical definition of narrow-spectrum: effective against only a limited range of organisms effective against only a limited range of organismsâ¦ See the full definition
If your baby is younger than 4 months, Health Canada recommends boiling the water for use in mixing formula for 2 minutes.
Add 1/4 teaspoon (or 16 drops; about 1.50 milliliters) of bleach for each gallon of cloudy water (or 4 drops of bleach for each liter or each quart of cloudy water). Stir the mixture well. Let it stand for 30 minutes or longer before you use it.