WATER PURIFIER
Scientific calculation of Sodium Hypochlorite dosage for safe disinfection.
Chemical Disinfection & Water Safety Protocols
Access to safe drinking water is the most critical factor in survival and public health. When biological contamination is suspected and boiling is not an option, chemical disinfection using household bleach (Sodium Hypochlorite) is a globally recognized solution. The Water Purifier Solver utilizes the standard health protocols to calculate the exact number of drops needed to neutralize bacteria, viruses, and some protozoa, ensuring the water is biologically safe for consumption.
The effectiveness of chlorination depends on two primary factors: Concentration and Contact Time. For standard household bleach with a concentration of 5% to 8.25%, the general rule is 2 drops per liter for clear water and 4 drops per liter for cloudy or highly turbid water. Turbidity (cloudiness) provides "hiding places" for pathogens, shielding them from the chemical action of the chlorine; therefore, doubling the dosage is necessary.
After adding the calculated dosage, it is imperative to stir the water and let it stand for at least 30 minutes. This window, known as the "Contact Time," allows the chlorine to complete the oxidation process and eliminate harmful microorganisms. If the water is extremely cold (near freezing), the contact time should be doubled to 60 minutes. A slight chlorine odor should be detectable after the wait period; if not, the dosage should be repeated and the wait time restarted. This systematic approach to "Water Intelligence" ensures that even suspect sources can be rendered potable in emergency scenarios.
Emergency Water Treatment Benchmarks
Step-by-Step Purification Guide
Water Purification Q&A
Chlorination is highly effective against bacteria and viruses, but it may not kill resistant parasites like Cryptosporidium or Giardia. For maximum safety, filtration through a 1-micron filter or boiling is recommended in addition to chemical treatment.
Health & Chemical Safety Disclaimer
Sodium Hypochlorite is a corrosive chemical. Ensure you are using the correct concentration and follow all safety warnings on the product label. This tool provides estimates for emergency use; use professionally treated water whenever possible.