BS EN 17375:2020 pdf free.Electronic cigarettes and e-liquids -Reference e-liquids.
BS EN 17375 4.3.1 To perform tests, there are two reference e-liquids (see 4.3.2 and 4.3.3) and their composition is described in 4.3.4. 4.3.2  A reference e-liquid, termed 70/30, which contains propylene glycol (PG) (4.2.1) and glycerol (vegetable glycerine) (VG) (4.2.2) in a ratio of 7:3 respectively.4.3.3 A reference e-liquid, termed 50/50, which contains propylene glycol (PG) (4.2.1) and glycerol (vegetable glycerine) (VG]) (4.2.2) in a ratio of 1:1 respectively.  4.3.4 The compositions of the reference e-liquids are detailed in Table 1. Masses are expressed in g per 100 g, and are not corrected for purity of the particular ingredient. 4.4 Storage of reference e-liquids The maximum expiry date of the reference e-liquids is determined by the earliest expiry date of an individual ingredient. Reference e-liquids shall be stored under conditions that prevent alteration of their compositions. It is recommended to store at a temperature between 5。C and 25 °C, away from light sources, and in an airtight (preferably glass) container. Prior to use, the reference e-liquids shall be brought to ambient
room temperature. 5 Use of reference e-liquids 5.1 Selection of reference e-liquid Electronic cigarettes complying with the scope of this document shall be tested with one of the two
reference e-liquids listed in Table 1. The manufacturer shall justify the choice made between the two reference e-liquids; as a guide low power devices would be better suited to using the e-liquid with PG/VG 70/30 ratio, and high power devices would be better suited to using the e-liquid with the PG/VG 50/50 ratio. The product information available to the consumer shall indicate which reference e-liquid was used for the emissions testing. 5.2 Period of use after opening Reference e-liquids should be used within 24 h after opening if stored appropriately. E-liquids are hygroscopic. Exposing opened containers of e-liquids to ambient atmosphere might change their compositions, so exposure of the reference e-liquids to ambient atmosphere should be minimized.BS EN 17375 pdf download.