A tool designed to determine the quantity of sodium hypochlorite solution needed to achieve a target free chlorine level in a swimming pool. This calculation typically considers the pool’s volume, the current chlorine level, and the strength of the bleach being used. For example, a pool owner might use this to calculate how many fluid ounces of 6% bleach are required to raise the chlorine level in a 10,000-gallon pool from 1 ppm to 3 ppm.
Precise chemical balance is critical for swimmer safety and water clarity. Incorrect chlorination can lead to ineffective sanitation, fostering algae growth and bacteria proliferation, or overly high chlorine levels, causing skin and eye irritation. Historically, pool owners relied on generalized charts or approximations, often leading to inaccuracies. The advent of readily available calculation methods improves the precision of chemical additions, minimizing the risk of under- or over-chlorination, contributing to a healthier and more enjoyable swimming experience and potentially reducing chemical costs over time.