11/5/2023 0 Comments Liquid pool shockCan You Use Expired Pool Chemicals?įor several reasons, using your expired pool chemicals is not advisable. If you wish to learn more about this, check out my detailed article on how to store your pool chemicals. So to store your pool chemicals properly, keep the following in mind: Even lidded products can leak, and while a drop or two might not seem harmful, it is a threat, especially if located near a unit with electrical heating coils or kerosene. Apart from safety concerns, storage is also essential to maintain the potency and effectiveness of these chemicals.įurther, it is possible that the elements present in pool chemicals, such as oxidizing or acidic elements, can damage electrical objects and other equipment in the storage area by causing rust. They are sometimes hazardous, potentially volatile substances that require careful and proper storage. Pool chemicals cannot be stashed in the corner of your yard and forgotten about. Store your test kits in a cool, dry area away from direct sunlight. Check the container your tests come in for an expiration date. Test strips can usually last up to 2-3 years, and liquid test reagents typically have a shelf life of 1-2 years. But keep in mind that if soda ash is stored in a humid room, it will cause it to clump and lose effectiveness – eventually converting it into sodium bicarbonate. Soda ash or sodium carbonate lasts 2-5 years but can last longer if kept in the right conditions. However, since the acid can break down the container it is stored in over time, make sure to keep an eye on it. Muriatic acid or sodium bisulfate can last as long as five years. But it can have a longer shelf life if stored correctly in a sealed container and kept dry. Sodium bicarbonate or baking soda can last around two years. Stain and scale removers can last indefinitely when stored indoors in a cool, dry location within an airtight container. Direct sunlight, extreme humidity, and temperatures above 75☏ or below freezing can ruin it. AlgaecideĪlgaecide can remain effective for up to five years when stored in cool and dry conditions. However, it must be kept in an airtight container for the best results. Cyanuric AcidĬyanuric acid, also called pool conditioner or stabilizer, can technically last forever. Like pool shock, chlorine tablets can last up to 3-5 years and should not be exposed to direct sunlight or air for maximum longevity and chemical effectiveness. Granular chlorine should never be exposed to the air since it is moisture-absorbent and quickly becomes a mushy, unusable paste if left outside. Pool shock, or granular chlorine, has a shelf life of up to 3-5 years, depending on the container it is stored in, which needs to be airtight. My top tip is to buy a fresh batch every pool season and use it over that season only. It loses almost 90% of its potency after a year, even with the best storage conditions. Liquid chlorine has the shortest shelf life of all your pool chemicals, losing up to 50% or half of its potency approximately 5-6 months from when first opened. The best way to keep track of the shelf life of your chemicals is to look at the manufacturer’s best-by date. I have expanded further on the shelf life of most major chemicals below, but keep in mind that this is a general look at the expiration dates. Liquid and dry chemicals have different shelf lives. The bottom line is that most of your pool chemicals (with the exception of liquid chlorine), such as clarifiers, stain or scale removers, muriatic acid, granular chlorine, pool shock, or algaecides, will last you for a good 3-5 years. In dry and cool storage conditions, if kept in airtight containers away from sunlight, you’re looking at several years of long-lasting potency from your chemicals. However, most pool chemicals, including shock, also have a generous shelf life.
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