[Twain Supply] The role of Twain in biological experiments

tween is the transliteration of tween, also called tween-type emulsifier, which is the condensation of span (sorbitol fatty acid ester) and ethylene oxide it is a type of non-ionic detergent. chemical name: polyoxyethylene sorbitan fatty acid ester, referred to as polysorbate (polysorbate). since span is an ester formed of sorbitol and different higher fatty acids,…