Ruwan shayar da tawul a kan fata, jita-jita da kayan daki an kwatanta shi a rayuwa ta ainihi don gwada shayar da ruwa, wanda ya dace da gwajin shayar da ruwa na tawul, tawul ɗin fuska, tawul ɗin murabba'i, tawul ɗin wanka, tawul da sauran samfuran tawul.
Haɗu da ma'auni:
ASTM D 4772-Tsarin Hanyar Gwaji don Shayar da Ruwan Ruwa na Tawul (Tsarin Gwajin Guda)
GB/T 22799 “—Tawul samfur Hanyar gwajin sha ruwa”
