chlorine
Chlorine
The chemical element chlorine with the symbol Cl and atomic number 17 is located in group 7 of the periodic table and thus belongs to group 17 of the IUPAC classification. Like fluorine, bromine, iodine, and tennessine, chlorine is part of the halogens. In nature, chlorine only occurs in various bound compounds. The most common chloride is sodium chloride, often referred to as table salt or simply as salt.
Chloride has important biological functions, is a common component of seawater, and helps regulate the body's water balance.
Chlorine, which is mainly produced by electrolysis, is primarily used for chlorine-containing compounds such as vinyl chloride, the basis for the production of PVC plastic.
Applications of chlorine
The most important historical application of chlorine lies in its use as a bleaching agent. It can be used either in elemental form or further processed into bleaching powder by reacting with calcium hydroxide. Chlorine was first used as a poison gas in World War I. In addition to many chlorine gas accidents in swimming pools, chlorine is still used today as a chemical weapon, despite its limited injury potential. Chlorine is a widespread industrial chemical that, in principle, any pool attendant has access to.
The disinfecting effect of hypochlorite, which is formed during the reaction of chlorine with water, is used in water treatment, known as chlorination. Not only drinking water but especially pool water is disinfected this way. However, since the reaction with water also produces carcinogenic substances such as trihalomethanes, chlorine is increasingly being replaced by chlorine dioxide or ozone for disinfection.
Chlorine in private use
Chlorine can be used effectively against algae growth in swimming pools. Chlorine (Cl2) has no place in ponds with fish, which everyone should know by now. However, if chlorine accidentally enters a pond, quick action is required. Chlorine burns the sensitive mucous membranes of the fish, which should be relocated immediately, and the pond water replaced. The fish usually require follow-up treatment. If the mucous membranes have already been damaged, the fish must be treated with the appropriate medication to prevent fungal infections.
Chlorine Cl2 limits for ponds and pools
-Chlorine < 0.1 mg/l: In a pond with fish, this chlorine level is not yet catastrophic, but quick action is necessary to save the beloved fish. For a swimming pool, this level is too low and algae cannot be effectively eliminated.
-Chlorine 0.1 – 0.3 mg/l: This chlorine concentration in a pond harms not only the fish but also the pond plants. For pools, the chlorine content is still too low to destroy algae.
-Chlorine 0.3 – 0.6 mg/l: If such a value is measured in a pond with fish, chances are slim for saving them. For pools and swimming baths, these are optimal values — algae are reliably destroyed and there is no significant danger to skin or eyes.
-Chlorine > 0.6 mg/l: At this chlorine concentration in a fish pond, nothing can be saved. Even for pools, this level is too high. The pool water should be diluted quickly to reduce the concentration. Otherwise, it could lead to burning skin and red eyes.
Chlor

Average rating of 4.5 out of 5 stars
Chloriklar Chlor Effervescent Tablets – Fast-Acting Solution for Acute Water Problems The Chloriklar Chlor Effervescent Tablets are the ideal choice for a fast and effective shock treatment for acute water problems in your pool. These 20 g effervescent tablets dissolve quickly and efficiently increase the active chlorine level in the water. Whether combating bacteria, viruses, or turbidity – thanks to their special formulation, the tablets ensure hygienically flawless pool water and clear water conditions. They can be added directly to the skimmer or dissolved in a bucket and dosed into the pool water, allowing for flexible and convenient application. Technical Details and Benefits: Fast Action: Quickly increases the active chlorine content to resolve water problems rapidly. Versatile Application: Can be added directly to the skimmer or dissolved in a bucket and dosed into the pool water. Effective Shock Treatment: Ideal for quickly combating contamination, bacteria, and viruses. Universally Applicable: Suitable for all pool sizes and filter types without restrictions. Easy Handling: The fast-dissolving tablets are very user-friendly and ensure uncomplicated pool maintenance. Application Recommendations: Dosage for Water Problems: Add 10 Chloriklar Chlor Effervescent Tablets per 10 m³ of pool water to solve acute issues. Flexible Addition: Place the tablets directly in the skimmer or dissolve them in a separate bucket before adding the solution to the pool water. Regular Monitoring: Check the active chlorine level after application to ensure the desired effect has been achieved. The Chloriklar Chlor Effervescent Tablets are the perfect solution for fast and effective pool water treatment. Ideal for private and commercial swimming pools, they provide a reliable shock treatment that quickly restores your water to optimal condition. For hygienic, clear pool water you can rely on! Please observe the following safety advice: "Use biocides safely. Always read the label and product information before use". Caution

Average rating of 4.7 out of 5 stars
Chlorifix Chlor Granulate – Effective Shock Treatment for Pool Water Problems Chlorifix Chlor Granulate from Bayrol is a fast-dissolving product for targeted shock treatment of pool water issues. It quickly and reliably increases the active chlorine content of your pool water to effectively combat bacteria, viruses, fungi, and organic turbidity. Thanks to its innovative microbead formulation, it produces less dust during dosing compared to conventional chlorine granulates, making application particularly pleasant and convenient. Technical Details and Benefits: Fast Action: Increases active chlorine content immediately after dosing, efficiently addressing water issues. High-Quality Raw Materials: Ensure effective disinfection and provide hygienically flawless water. Innovative Microbeads: Reduce dust formation and make handling easier. Versatile Applications: Suitable for all pool sizes and filter types without restrictions. Universal Compatibility: Can be used with all water hardness levels and dissolves without leaving residues. Application Recommendations: Dosage: For pool water issues, add 200 g Chlorifix Chlor Granulate per 10 m³ of water directly to the pool water. Flexible Addition: The granulate can be dosed directly or dissolved in a separate bucket and then added to the pool water. Regular Monitoring: After application, check the chlorine and pH levels to ensure optimal water quality. With Chlorifix Chlor Granulate, you benefit from a fast and effective solution for shock treatment of your pool. Ideal for private and commercial swimming pools – ensure hygienic and crystal-clear water ready for worry-free swimming! Trust Bayrol for reliable and modern pool care. Please observe the following safety advice: "Use biocides safely. Always read the label and product information before use". Caution

Average rating of 4.6 out of 5 stars
ChloriLiquid Pool Dosage Systems Chlor Liquid Concentrate – Effective Pool Disinfection with Hardness Stabilization ChloriLiquid Pool Dosage Systems Chlor Liquid Concentrate from Bayrol is a highly effective solution for pool water disinfection. The liquid concentrate based on inorganic, non-stabilized chlorine reliably eliminates bacteria and removes turbidity. At the same time, the included hardness stabilizer effectively prevents lime deposits at dosing points, ensuring sustainable care of the pool equipment. Developed for use in automatic measuring, control, and dosing systems, ChloriLiquid provides a convenient and efficient way to maintain your pool. Technical Details and Benefits: Powerful Disinfection: Removes bacteria and impurities, ensuring clear, hygienic pool water. Hardness Stabilization: Reduces lime deposits at dosing points, protecting the equipment and ensuring even dosing. Efficient Application: Suitable for automatic systems like Pool Relax, PoolManager, or separate chlorine dosing pumps. Fast Action: Ensures optimal water quality immediately after dosing. Inorganic Chlorine: Non-stabilized, making it particularly suitable for applications where stabilization is not required or desired. Additional Features and Compatibility: Automation: Optimized for use in automatic systems to simplify pool care and ensure consistently high water quality. Versatility: Can be used in pools with various filter types and sizes. Practical Handling: Easy to dose and reliably effective, ideal for continuous operation. Application Recommendations: Use with Dosing System: Fill ChloriLiquid into your automatic measuring or control system according to the manufacturer’s instructions. Regular Monitoring: Regularly check chlorine and pH levels to ensure consistent water quality. Prevention of Lime Deposits: Use ChloriLiquid consistently to protect dosing points from scaling. With ChloriLiquid Pool Dosage Systems Chlor Liquid Concentrate, you get a reliable and modern solution for pool water care. Perfect for both private and commercial applications, this product offers an effective combination of powerful disinfection and technical protection – for crystal-clear water and long-term protection of your pool equipment! Trust Bayrol for high-quality pool care products. Caution: No shipping abroad available. Please observe the following safety advice: "Use biocides safely. Always read the label and product information before use". Caution
Content: 20 Liters (€3.50 / 1 Liters)

Average rating of 4.7 out of 5 stars
Chlorilong Classic Chlorine Tablets – Slow-Dissolving Tablets for Reliable Long-Term Disinfection The Chlorilong Classic Chlorine Tablets from Bayrol offer an effective and long-lasting solution for pool water care. With their slow dissolution and constant chlorine release, they ensure reliable long-term disinfection and keep the water hygienically clean. They not only eliminate bacteria but also remove turbidity, keeping your pool water crystal clear. Thanks to the innovative pressing technology, the tablets dissolve evenly, providing additional security for pool maintenance. Technical Details and Benefits: Slow Dissolution: The 250 g chlorine tablets ensure continuous and long-lasting chlorine release. Effective Disinfection: Fights bacteria and viruses, as well as organic turbidity and impurities. Innovative Pressing Technology: Ensures even dissolution and stable chlorine release. Safe for Pool Surfaces: Thanks to high-quality raw materials and a copper sulfate-free formula, surface damage is avoided. Universal Applicability: Suitable for all pool filter types and pools with a volume of over 20 m³. Extended Application Possibilities: Constant Effect: Ideal for continuous maintenance of large pools. Long-Term Effect: With a duration of 7 to 10 days, your pool water remains consistently clean and clear. Compatibility: Works with all filter types, offering maximum flexibility in pool care. Application Recommendations: Dosage: Place the chlorine tablets every 7 to 10 days directly in the skimmer. Regular Monitoring: Check chlorine and pH levels regularly to ensure optimal water conditions. Care Intervals: Use Chlorilong Classic as part of your regular pool maintenance to maintain consistently excellent water quality. With Chlorilong Classic Chlorine Tablets from Bayrol, you are opting for a proven solution for reliable long-term disinfection and constant water quality. This product is ideal for private and commercial pools – ensuring a hygienic swimming experience with minimal maintenance! Trust Bayrol for high-quality pool care products. Please observe the following safety advice: "Use biocides safely. Always read the label and product information before use". Caution
Content: 1.25 kilogram (€19.16 / 1 kilogram)

Average rating of 4.8 out of 5 stars
Chlorilong Power 5 Chlor Tablets with Clorodor – Multifunctional Solution for Perfect Pool Care The Chlorilong Power 5 Chlor Tablets with Clorodor from Bayrol provide a comprehensive solution for pool water care with innovative features and consistent effectiveness. These 250 g slow-dissolving multifunctional tablets combine five essential benefits: long-lasting disinfection, turbidity removal, algae prevention, lime avoidance, and chlorine stabilization, keeping your pool water hygienically clean and crystal clear. Thanks to high-quality raw materials and a special pressing technique, the tablets dissolve evenly and release chlorine continuously in the optimal amount. With Chlorilong Power 5, you benefit from reliable disinfection and safe usage, all without copper sulfate. Technical Details and Benefits: Five-Action Effect: Permanent elimination of bacteria, viruses, and fungi. Effective removal of turbidity for crystal-clear water. Reliable prevention of algae growth. Avoidance of lime deposits and protection of pool surfaces. Chlorine stabilization for long-term water quality maintenance. Even Chlorine Release: Innovative pressing technology ensures constant chlorine release, enhancing pool care safety. Copper Sulfate-Free: No damage to pool surfaces, ideal for gentle care. Compatibility: Suitable for all pool filter types and pools with a volume of 20 m³ or more. Practical Sizes: Available in 1.25 kg cans or 5 kg buckets for different needs. Application Recommendations: Dosage: Place the chlorine tablets in the pool skimmer every 7 to 10 days. Regular Monitoring: Monitor chlorine and pH levels to ensure consistent water conditions. Optimal Results: Integrate Chlorilong Power 5 into your regular maintenance routine for long-lasting effects and clear pool water. With the Chlorilong Power 5 Chlor Tablets with Clorodor from Bayrol, you choose a powerful and multifunctional solution for pool care. Ideal for private and commercial pools – enjoy hygienic, sparkling clear water and carefree swimming with minimal effort! Trust Bayrol for reliable and advanced water care. Please observe the following safety advice: "Use biocides safely. Always read the label and product information before use". Caution
Content: 1.25 kilogram (€19.16 / 1 kilogram)

Average rating of 4.7 out of 5 stars
Chlorilong Power 5 Mini Chlor Block Copper Sulfate-Free – Compact and Effective Pool Care for Crystal Clear Water The Chlorilong Power 5 Mini Chlor Block Copper Sulfate-Free offers an efficient and compact solution for long-term disinfection of pool water. With its slow-dissolving 340 g chlorine block, it ensures thorough disinfection, eliminates bacteria, and removes turbidity. Thanks to the included anti-algae granules, algae growth is effectively prevented, while the chlorine-stabilizing formula constantly maintains hygienic pool water. The innovative pressing process ensures uniform dissolution and consistent chlorine release, ensuring optimal water quality – ideal for smaller pools or for maintenance during vacation periods. Technical Details and Benefits: 5-in-1 Action: Continuous disinfection against bacteria, viruses, and fungi. Effective algae prevention with anti-algae granules. Turbidity removal for crystal-clear water. Limescale prevention to avoid deposits. Chlorine stabilization for long-lasting effectiveness. Innovative Pressing Process: The mini chlorine block dissolves evenly and releases a consistent amount of chlorine into the water. Gentle Formula: Free of copper sulfate, protecting pool surfaces. Long-Term Care: Treats pools with a volume of 20 m³ for up to 14 days – perfect for vacation or extended absences. Compact Size: Particularly suitable for smaller pools and easy application. Application Recommendations: Dosage: Place the mini chlorine block every 10 to 14 days in the skimmer. One block is sufficient for pools up to 20 m³. Regular Monitoring: Regularly check chlorine and pH levels to ensure consistent water quality. Vacation-Friendly: Ideal for longer care intervals to guarantee perfect pool water quality even in your absence. With the Chlorilong Power 5 Mini Chlor Block Copper Sulfate-Free, you get a powerful, user-friendly solution for pool care. Whether for private pools or smaller pools, enjoy hygienically clean water and worry-free swimming. Trust Bayrol for reliable and modern pool care! Please observe the following safety advice: "Use biocides safely. Always read the label and product information before use". Caution
Content: 0.34 kilogram (€43.97 / 1 kilogram)

Chlorine Bromine Feeder – Efficient Disinfection for Crystal-Clear Pool Water The Chlorine Bromine Feeder is the ideal solution for precise and automatic dosing of chlorine or bromine to disinfect swimming pool water. Whether for new pool construction or the renovation of an existing system, this unit ensures simplified and safe water treatment. With versatile installation options and a user-friendly design, the feeder meets the needs of both private and professional pool owners. Features and Technical Details The Chlorine Bromine Feeder impresses with innovative functionality and durable construction: Flexible Installation Options: In-line Installation: Direct integration into the return line, after the pool filter and heater. Off-line Installation: Installation as a bypass for added flexibility. Optimized Dosing Rate: The filling capacity ranges between 1.6 and 2.2 kg, depending on the tablet type. Dosing rate adjustment via external control valve – no risk of vapor release. Convenient Filling: Easy top-loading access for effortless refilling. Standard Connection: d 50 mm on both sides, suitable for common pool installations. Complete Package: All required installation accessories included for hassle-free setup. Benefits at a Glance With the Chlorine Bromine Feeder, you benefit from: Efficient Disinfection: Ensures hygienic water quality. Ease of Use: User-friendly design for quick installation and operation. Flexible Integration: Multiple installation options for different pool systems. Long-Term Reliability: Sturdy construction for lasting use. The Chlorine Bromine Feeder makes pool maintenance significantly easier and guarantees crystal-clear, hygienic water. Invest in quality and efficiency – your pool deserves the best disinfection. Rely on a safe and modern water treatment solution!

Average rating of 4.8 out of 5 stars
Chlor Granules SpaTime – Reliable Immediate Action for Hygienic Spa Water Chlor Granules SpaTime is a proven disinfection method for the effective cleaning and maintenance of spa water. It delivers fast and reliable immediate action to keep your water free from bacteria and germs. This ongoing disinfection is especially important in spas, where high water temperatures provide ideal conditions for bacterial growth. With Chlor Granules, you protect your health and ensure optimal water quality. Technical Details and Benefits: Rapid immediate action: Fights bacteria and germs right after dosing. Traditional method: Proven chlorine granules ensure continuous disinfection. Ideal protection: Ensures user health through effective water hygiene. Easy dosing: Clear dosage instructions for uncomplicated application. Optimized water care: Keeps chlorine levels within the ideal range of 1.0–1.5 mg/L. Application Recommendations: Dose after each use: Add 5 g of chlorine granules per m³ directly to the spa water for immediate hygiene. Regular checks: Monitor chlorine levels regularly to ensure they remain in the ideal range of 1.0–1.5 mg/L. Immediate action benefit: The granules take effect right after dosing, avoiding any disinfection gaps. SpaTime Chlor Granules Spa Water Care is essential for all spa owners who prioritize safety, hygiene, and ease of use. Ideal for both private and commercial spas, this disinfectant ensures that your water remains consistently hygienic – for a worry-free and healthy spa experience. Trust SpaTime for reliable water care. "Use biocides safely. Always read the label and product information before use." Danger

Average rating of 4.8 out of 5 stars
Chlor Long-Lasting Tabs – Reliable Long-Term Disinfection for Hygienic Pool Water The Chlor Long-Lasting Tabs are the perfect solution for efficient and long-lasting disinfection of your pool water. These calcium-free tablets effectively combat bacteria, viruses, and fungi, ensuring that your pool water remains hygienically perfect. Additionally, they remove organic turbidity and impurities, contributing to clear water quality. The residue-free dissolution prevents deposits and protects against filter clogging – ideal for worry-free pool maintenance. Technical Details and Benefits: Long-Lasting Effect: Effectiveness over an extended period for a consistent hygiene standard. Comprehensive Disinfection: Fights bacteria, viruses, and fungi, ensuring a healthy swimming experience. Effective Turbidity Removal: Removes organic impurities and promotes crystal-clear water. Universal Compatibility: Suitable for all water hardness levels without interfering with water chemistry. Residue-Free Dissolution: No deposits or filter clogging, making maintenance easier and prolonging filter lifespan. Application Recommendations: Dosage: Place the Chlor Long-Lasting Tabs in the skimmer or a suitable dosing chamber according to pool size and manufacturer instructions. Regular Monitoring: Check the chlorine and pH levels regularly to ensure water values are within the optimal range. Long-Term Care: Use the tabs for continuous disinfection and clear pool water over an extended period. With the Chlor Long-Lasting Tabs, you choose a reliable and hassle-free pool care solution. This product is ideal for both private and commercial pools, ensuring that your water remains clean, clear, and hygienic. Enjoy worry-free swimming with this practical and powerful solution! Please observe the following safety advice: "Use biocides safely. Always read the label and product information before use". Caution

Average rating of 4.8 out of 5 stars
Chlor Multifunction Tabs – All-in-One Pool Water Care for Perfect Hygiene and Clarity The Chlor Multifunction Tabs are the optimal all-in-one solution for comprehensive pool water care. These tablets combine multiple functions such as continuous disinfection, algae prevention, flocculation (for sand filters), and hardness stabilization to keep your pool water hygienically clean and crystal clear. They have a long-lasting effect – up to 14 days – and protect your water effectively from bacteria, viruses, fungi, algae growth, and cloudiness. With their universal applicability and residue-free dissolution, they provide a convenient and powerful solution for swimming pools up to 30 m3. Technical Details and Benefits: Multi-Functionality: Continuous disinfection, algae prevention, flocculation, and hardness stabilization in one tablet – for comprehensive water care. Long-Term Effect: One tablet protects the pool water for up to 14 days from bacteria, viruses, algae growth, and cloudiness. Residue-Free Dissolution: Leaves no deposits or residues that could clog filters. Compatibility: Suitable for all water hardness levels and pools up to 30 m3, ideal for small swimming pools or large skimmer baskets. Effective Algae Prevention: Prevents algae growth and ensures consistently clear water conditions. Application Recommendations: Dosage: Place one Chlor Multifunction Tab in the skimmer basket or dosing chamber of your pool system. Duration of Effect: One tablet lasts for approximately 14 days, depending on pool usage and environmental conditions. Regular Monitoring: Check the chlorine and pH levels regularly to ensure optimal water conditions. With the Chlor Multifunction Tabs, you opt for a practical, long-lasting, and powerful solution for pool care. These tablets guarantee efficient water disinfection, reliably prevent algae growth, and promote crystal-clear pool water – ideal for private and commercial pools. Enjoy carefree swimming with maximum comfort and minimal maintenance! Please observe the following safety advice: "Use biocides safely. Always read the label and product information before use". Caution

Average rating of 4.8 out of 5 stars
Chlor Tablets – Fast Dissolving Disinfection for Crystal Clear Pool Water The Chlor Tablets are a proven and effective solution for disinfecting swimming pool water. With their fast dissolution, they work immediately against bacteria, fungi, and viruses, ensuring hygienically clean water. At the same time, the tablets effectively break down organic turbidity and impurities. Thanks to their calcium-free and pH-neutral properties, they are universally applicable and ensure effortless pool care without residues or deposits. Technical Details and Benefits: Fast Action: Work immediately upon addition to combat bacteria, viruses, and fungi, improving water hygiene. Effective Turbidity Breakdown: Remove organic impurities and ensure crystal-clear pool water. Calcium-Free and pH-Neutral: Do not affect water hardness or pH levels, gentle on pool chemistry. Residue-Free Dissolution: No deposits or filter blockages, making pool maintenance easier. Universal Applicability: Suitable for all water hardness levels and pool types, both private and commercial. Application Recommendations: Dosage: Add the Chlor Tablets directly to the skimmer or dosing chamber according to pool size and manufacturer’s recommendations. Regular Monitoring: Check the chlorine and pH levels regularly to ensure consistent water quality. Optimal Results: Use the tablets as part of a regular pool maintenance routine to keep the water clear and clean. The Chlor Tablets are an essential component for easy pool maintenance. With their fast action and residue-free behavior, they guarantee a worry-free swimming experience. Ideal for anyone looking for efficient, hygienic, and reliable pool care – perfect for both private and commercial applications! Please observe the following safety advice: "Use biocides safely. Always read the label and product information before use". Caution

Average rating of 4.7 out of 5 stars
Chlor Granules Pool Disinfection – Fast Dissolving Solution for Hygienic Pool Water The Chlor Granules Pool Disinfection is the ideal choice for fast and reliable water disinfection in your swimming pool. With its immediate effect, the granules effectively combat bacteria, fungi, and viruses, ensuring hygienically flawless water quality. Additionally, it removes organic turbidity and impurities to guarantee crystal-clear pool water. The calcium-free and pH-neutral granules are universally applicable and leave no residues that could clog filters. Technical Details and Benefits: Fast Dissolving: Provides immediate disinfection and rapid improvement of water hygiene. Effective Disinfection: Effectively combats bacteria, fungi, viruses, and organic turbidity. Calcium-Free and pH-Neutral: Suitable for all water hardness levels without negatively affecting water chemistry. Residue-Free Dissolution: Prevents deposits and protects pool filters from blockages. Universal Applicability: Perfect for private and commercial pools of any size. Application Recommendations: Dosage: Add the recommended amount of chlor granules according to pool size and specific requirements directly to the pool water. Regular Monitoring: Regularly monitor the chlorine and pH levels to ensure the water values remain within the optimal range. Use as Needed: Use the granules for quick and targeted water disinfection, especially when visible turbidity or increased maintenance is needed. With the Chlor Granules Pool Disinfection, you enjoy an easy and effective solution for water care. Ideal for all pool owners who value cleanliness, hygiene, and clarity. Ensure a healthy swimming experience and sparkling clear pool water – always ready for carefree swimming fun! Please observe the following safety advice: "Use biocides safely. Always read the label and product information before use". Caution
Content: 5 kilogram (€7.65 / 1 kilogram)















