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.
1. Bubble the gas through limewater. The most effective way to test for COÂ² is to bubble the gas through lime water, a diluted solution of calcium hydroxide (slaked lime). When you bubble carbon dioxide through the solution, it forms a solid precipitate of calcium carbonate â chalk or limestone.Calcium carbonate is insoluble in water.. Bubble the gas through the limewater. Half-fill a test tube with limewater â then boil it. Use a delivery tube to pipe the contents of the COÂ² sample test tube directly into the boiling limewater. You can use a flexible pipe or a (metal) straw as a delivery tube, if nothing better is around.