HASA 4 Gallon Liquid Chlorine Case
Product Overview
The standard specification for fast-acting, residue-free sanitization without raising cyanuric acid levels.
Pool techs reach for HASA Chlor when they need an immediate sanitizing response without adding stabilizer or calcium to the pool. This 4 Gallon case contains 12.5% sodium hypochlorite (equivalent to 15.14 Liters of Sodium Hypochlorite solution), providing a clean, fast-acting alternative to granular shocks. Because it is a liquid, it disperses instantly to destroy algae and bacteria, making it a proven choice for both routine maintenance and heavy corrective treatments.
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Benefits & What Makes It Different
12.5% Sodium Hypochlorite
This professional-grade sodium hypochlorite solution delivers immediate sanitizing power, raising free chlorine levels rapidly without needing to dissolve.
Zero Cyanuric Acid
Unlike dichlor or trichlor, this liquid formula adds no stabilizer (CYA), helping you maintain the ideal water range of 30–50 ppm without risk of stabilizer lock.
Precise Dosing Control
Formulated so that 10.7 ounces will raise 10,000 gallons of pool water by 1ppm, allowing for highly accurate adjustments to maintain the target 1–3 ppm free chlorine range.
Product Details
Sodium Hypochlorite 12.5%
10.7 oz per 10,000 gallons to raise free chlorine by 1ppm
Compatibility
- Do not mix directly with any other pool chemicals, especially acids, as this releases toxic chlorine gas.
- Wait at least 30 minutes after application and verify free chlorine is between 1–3 ppm before swimming.
When To Use This
Pro Tip
In hot climates where intense sunlight burns off chlorine rapidly, always add your liquid chlorine after dusk. This allows the active sodium hypochlorite to sanitize the water overnight without UV degradation, maximizing the efficiency of your 4 Gallon case.
Common Questions & Instructions
How much HASA liquid chlorine do I need to raise my free chlorine by 1ppm?
To raise 10,000 gallons of pool water by 1ppm, you will need approximately 10.7 fluid ounces of HASA Chlor 12.5% sodium hypochlorite. For a standard 4 Gallon case (which totals 15.14 Liters), this allows for multiple precise adjustments to keep your pool within the ideal 1–3 ppm free chlorine range.
Does hasachlor chlorinating liquid affect pH or calcium hardness?
HASA liquid chlorine has a high pH, so it may temporarily raise your pool's pH slightly upon application, though normal sanitizing action typically neutralizes this. Unlike cal-hypo shock, it adds zero calcium hardness, making it ideal for regions with naturally hard water where keeping calcium within 200–400 ppm is a priority.
Can I use HASA chlor in a liquid chlorine feeder?
Yes, this product is highly compatible with a HASA liquid chlorine feeder or other automatic liquid dosing systems. It is the standard specification for automated sanitization because it contains no binders or scale-forming minerals that could clog feeder tubing or injection fittings.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
