石蕊试纸 Traditional 石蕊試紙 shí ruǐ shì zhǐ 🔊 litmus paper + Keep this word Meanings shí ruǐ shì zhǐ 石蕊試紙 (chemistry) litmus paper Its characters 石shírock蕊ruǐstamen试shìto testHSK 3纸zhǐpaper (CL:張|张[zhang1],沓[da2])HSK 3