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ProfessorFluoride toothpaste can still be effective after its expiration date, but its potency may decrease over time. Using fluoride toothpaste past the expiration date can still help protect against tooth decay, but it may not be as effective as a product that is within its recommended shelf life.
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Does nitrous oxide expire?
No, this compressed gas has a long, long shelf life. But the cylinder it is smooshed into has a code date on it. Under nominal storage conditions, it should last decades, but corrosion can affect the cylinder or the valve. And should the tank be emptied, it cannot be refilled if the cylinder's "useful life" has passed. It will have to be hydrostatically tested and recertified. We know that nitrous oxide (N2O) is pretty stable stuff under nominal conditions. It stays the way it is when it is bottled up.
Does opened purified water go bad?
Opened purified water can start to taste different after a while due to the absorption of odors and flavors from its environment, but it does not necessarily go bad. As long as it has been stored properly and there are no signs of contamination, it is safe to drink beyond the expiration date on the bottle.
Which is best for food plants tap or alkaline water?
Tap water is generally suitable for most food plants, as long as it is not too high in salts or other contaminants. Alkaline water can be beneficial for some plants that prefer a higher pH, but you should be cautious as it may not be suitable for all types of food plants. It's a good idea to test the pH of your tap water and adjust it if necessary to meet the specific needs of your plants.
What are the elements of a good fighter in arnis?
A good fighter in Arnis is skilled in weapon and empty-hand techniques, has good footwork and agility, and possesses quick reflexes. They are adaptable, able to react and counter effectively in various situations, and have good stamina to endure long matches.
How many pages is The Good Earth by Pearl S Buck?
"The Good Earth" by Pearl S. Buck is around 400 pages long, depending on the edition and formatting.
