The document specifies safety requirements in order to increaseThe safety inThe use of snorkels for swimmers and divers. It is applicable to snorkels, which allow users to breathe atThe water surface whilst floating withThe face submerged. It covers snorkels used by swimmers, skin divers as well as SCUBA (acronym for self contained underwater breathing apparatus) divers.
EN 1972:1997 history
2015EN 1972:2015 Diving equipment - Snorkels - Requirements and test methods
1997EN 1972:1997 Diving Accessories - Snorkels - Safety Requirements and Test Methods