.healthyswimming.or. g. Protecting swimmers and their families from RWIs. is the reason that pool staff regularly check. both chlorine and pH levels. Chlorine and pH, your disinfection team, are the first defense. against germs that can make swimmers sick.
[kokâ²És] pl. cocci. Etymology: Gk, kokkos, berry. a bacterium that is round, spheric, or oval, such as gonococcus, pneumococcus, staphylococcus, and streptococcus. coccal, adj.
1 Cocci (or coccus for a single cell) are round cells, sometimes slightly flattened when they are adjacent to one another. 2  Bacilli (or bacillus for a single cell) are rod-shaped bacteria.  Spirilla (or spirillum for a single cell) are curved bacteria which can range from a gently curved shape to a corkscrew-like spiral.