Products
Pool Chlorine Tablets — Sustained Chlorine Sanitization for Swimming Pools
Pool chlorine tablets are the most widely used sanitization format for residential, commercial, and public swimming pools worldwide. Each tablet delivers a measured dose of calcium hypochlorite that dissolves gradually into the circulating water, holding free chlorine residuals steady between service visits and eliminating the need for daily manual dosing. Everglory Industrial manufactures pool chlorine tablets in two standard formats — 3-inch (200g) slow-dissolving tablets for skimmers, floating dispensers, and erosion feeders, and 1-inch (20g) rapid-dissolving tablets for small pools, spas, and spot dosing. With 65-70% available chlorine and pressed without binders or fillers, our tablets are exported in UN 2880 certified plastic drums to distributors, pool service companies, and facility operators in more than 60 countries.
Why Choose Pool Chlorine Tablets Over Granular Chlorine?
Granular chlorine remains the standard choice for shock treatment, but for everyday pool sanitization, tablets offer clear operational advantages. Here are five reasons professional pool operators choose pool chlorine tablets as their primary maintenance sanitizer:
1. Consistent chlorine release
A 200g tablet dissolves over 2-7 days, feeding a steady stream of chlorine into the water instead of the sharp spike-and-decline curve of granular dosing. This keeps free chlorine inside the recommended 1-3 mg/L band around the clock.
2. Pre-measured convenience
Every tablet contains an exact, known quantity of calcium hypochlorite. Pool technicians simply count tablets instead of weighing granular product, which shortens service routes and removes dosing arithmetic errors.
3. Reduced handling risk
Tablets generate essentially no dust. There is no pouring, scooping, or pre-dissolving, which lowers inhalation and skin exposure risk for staff and reduces product lost to spillage during dosing.
4. Cost efficiency for bulk pool maintenance
For companies maintaining dozens or hundreds of pools, tablet dosing cuts labor hours per visit. One weekly tablet placement replaces daily granular applications, directly reducing the largest cost line in pool maintenance: labor.
5. Compatible with automatic feeders
Standard 3-inch tablets fit commercial erosion feeders and inline chlorinators, enabling fully automated dosing for hotels, water parks, and municipal facilities where continuous compliance is mandatory.
Pool Chlorine Tablet Specifications
All pool chlorine tablets are pressed from the same high-purity calcium hypochlorite used in our granular production line, so chlorine strength is identical across formats:
Pool Chlorine Tablets Dosing Guide
The table below provides starting dosages for 3-inch (200g) pool chlorine tablets at typical bather loads and water temperatures. Always verify the actual free chlorine residual with a test kit and adjust tablet count accordingly:
Dissolution accelerates in warm water and high-flow conditions. During peak summer months or heavy bather loads, test free chlorine every 1-2 days and add tablets more frequently rather than overdosing a single placement.
Application Methods for Pool Chlorine Tablets
Four accepted methods exist for deploying pool chlorine tablets. The right choice depends on pool size, circulation design, and the level of automation required:
- Skimmer basket: The simplest method for residential pools. Place 1-2 tablets in the skimmer basket while the pump runs; returning water carries dissolved chlorine to every corner of the pool. Run the pump at least 6-8 hours daily so tablets do not sit in stagnant water, which can concentrate chlorine near the skimmer and plumbing.
- Floating dispenser: A buoyant dispenser holds several 3-inch tablets and releases chlorine through adjustable vents as it drifts across the surface. Ideal for above-ground pools and facilities without skimmers. Adjust the vents to raise or lower the dissolution rate, and remove the dispenser while the pool is in use.
- Erosion feeder: A dedicated chamber installed on the circulation line forces water past a stack of tablets at a controlled rate. Erosion feeders deliver the most precise and consistent dosing and are standard equipment in commercial pools, hotels, and sports facilities that must maintain sanitizer residuals within strict regulatory limits.
- Inline chlorinator: Similar to an erosion feeder but plumbed directly into the return line after the filter, with a dial valve to regulate chlorine output. Inline chlorinators fully automate sanitization for larger residential and semi-commercial pools, requiring refills only once every one to two weeks.
Packaging and Storage
As a Class 5.1 oxidizer (UN 2880), pool chlorine tablets must ship in certified dangerous goods packaging. Everglory Industrial packs tablets exclusively in UN 2880 certified plastic drums with inner PE liners, compliant with IMDG requirements for sea freight:
Store drums in a cool, dry, ventilated space away from sunlight, acids, ammonia, and combustible materials, stacked no more than three layers high. Keep drums sealed between withdrawals; absorbed moisture softens tablets and shortens usable life. Properly stored product retains full strength for 24 months.
Quality Assurance
- COA per batch: A Certificate of Analysis documenting available chlorine, moisture, and tablet physical properties accompanies every production batch before release
- MSDS supplied: Material Safety Data Sheets are provided in English, French, or Spanish for regulatory submission and staff training at destination
- UN 2880 packaging certificate: All drums carry valid UN performance certification for Class 5.1 dangerous goods sea transport
- ISO 9001 quality system: Production, testing, and release procedures operate under a certified ISO 9001 quality management system
- Third-party inspection accepted: SGS, BV, or CIQ pre-shipment inspection can be arranged at the buyer's request for added assurance on large contracts
Frequently Asked Questions
Q: What is the difference between pool chlorine tablets and granular chlorine?
Both contain calcium hypochlorite at 65-70% available chlorine. Pool chlorine tablets dissolve slowly over several days and are made for continuous maintenance dosing, while granular product dissolves within minutes and is intended for shock treatment and rapid chlorine elevation. Most professional programs use tablets for daily residuals and granular for weekly or event-driven shocking.
Q: How long do pool chlorine tablets last in the pool?
A 3-inch (200g) tablet typically dissolves over 2 to 7 days depending on water temperature, pump run time, and flow past the tablet. Warmer water and higher circulation speed shorten dissolution. 1-inch (20g) tablets dissolve in 30 to 60 minutes and are used for small-volume or corrective dosing.
Q: Can pool chlorine tablets go directly in the skimmer?
Yes, the skimmer basket is a standard placement for 3-inch tablets, provided the pump runs daily so water keeps moving over the tablet. Never throw tablets loose into the pool itself — direct contact with vinyl liners or plaster can bleach and damage surfaces. For pools with short pump run times, a floating dispenser or feeder is safer.
Q: Do these tablets contain cyanuric acid (CYA)?
No. Our tablets are calcium hypochlorite, an unstabilized chlorine that adds no cyanuric acid to the water. This matters for pools that are already CYA-saturated, because trichlor tablets add CYA with every dose and eventually cause chlorine lock. Pool operators can add a separate stabilizer only when and where it is needed.
Q: What is your minimum order quantity for pool chlorine tablets?
Trial orders start at 1 metric ton. For recurring supply we recommend a full 20ft container, which carries roughly 20-27 MT depending on the drum sizes selected. OEM private label production requires a minimum of 5 tons. Share your volume plan and we will quote the most freight-efficient configuration.
Q: How long does shipping take?
Production takes 7-15 days after order confirmation. Ocean transit varies by destination — typically 15-25 days to Southeast Asia, 25-35 days to the Middle East and Africa, and 30-40 days to Latin America. We handle IMDG-compliant DG documentation in-house, so bookings are not delayed by paperwork. Your quote includes realistic lead times to your port.
Ready to source pool chlorine tablets direct from the manufacturer? Contact Everglory Industrial for a same-week quotation with CIF pricing to your port. Tell us your tablet size, chlorine grade, drum preference, and target volume — our export team replies within 24 hours in English, French, or Spanish.
