Dying for a swim
June 13, 2013, noon
A local council in the United Kingdom has taken the unusual step of adding black dye to a popular swimming spot, in a bid to deter bathers. With a pH almost as high as ammonia, the ‘blue lagoon’ at Harpur Hill in Derbyshire posed a significant threat to the health of swimmers, and councilors hope that, by making the pool less visually appealing, fewer people will risk entering its waters.
Watch Acid and Alkalis, Part 1 and Part 2 and find out why high and low pH values can be so hazardous.