9.20 Resistance under the influence of temperature Test substances:- Coca-Cola (red label)- Orange juice (100 % fruit juice)-Nivea Sun,sun lotion,sunscreen factor 15,Thiery, -Nivea Cream, Thierry, see Section 9, note - Sun lotion test mixture, Thierry, see Section 9, noteOpen Coca-Cola and orange juice containers shall be replaced after one week,sun protection agent and hand cream shall be replaced after one year,and the sun lotion test mixture after twoyears. The sun lo-tion test mixture shall be stored in a glass vessel in darkness.