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Non-chlorine oxidizer that does not raise chlorine residual
Non-chlorine shock is a great alternative to chlorine in hot tubs, spas, and pools
Easy-to-use, quick-dissolving shock treatment
Spa entry can occur shortly after adding it to the water
Use 11g per 1,000 litres (220 gallons) of spa water
CAS Number ：70693-62-8

Non-chlorine shock contains a combination of oxygen and potassium. It may be known as Oxone, Potassium Monopersulfate, or Potassium Peroxymonosulfate, and is usually abbreviated MPS.
There are a lot of potential benefits to non-chlorine shock. It dissolves immediately upon hitting the water and leaves no residue. You need about 1 pound per 10k gallons of pool water. It works to oxidize organic matter from dead skin cells, sweat, sunscreen, dirt, leaves, and other sources. It also oxidizes chloramine.
Unlike chlorinated shock, chlorine-free has a pH level of 9 (neutral is 7). That’s somewhere between ocean water and hand soap. Chlorinated shocks have a pH closer to household cleaners. Because chlorine-free shocks have a lower pH than their chlorinated counterparts, swimming can resume just 15 minutes after the shock it added. It also will not bleach out pool liners, paint, or your swim trunks.
The main disadvantage of non-chlorine shock is that it does not kill algae of pathogenic bacteria (the stuff that makes you sick). For this reason, it is best used when the water is murky or the combined chlorine is too high. But if you are trying to deal with an algae bloom or unusually heavy pool use (lots of swimmers), non-chlorine bleach will not help much.

Calcium hypochlorite is commonly used to disinfect public swimming pools and drinking water. Commercially available calcium hypochlorite is 68% pure and contains other chemicals, Sodium Chloride, Calcium Chloride and Calcium Hydroxide, which are generated during the production process. Calcium hypochlorite solutions can be used as general-purpose disinfectants.
CAS Number：7778-54-3

Trichloroisocyanuric acid (TCCA), commonly known as trichloro, is a white crystalline powder with a strong chlorine odor. It is a powerful chlorinating and oxidizing agent widely used in water treatment (swimming pools, drinking water), industrial settings.
Preferred IUPAC name： 1,3,5-Trichloro-1,3,5-triazinane-2,4,6-trione
CAS Number：87-90-1