The majority of market stock is fire fighting foam for water-immiscible liquids such as oil, naphtha and hydrocarbon-fuels, and non-PFOS alternatives are already marketed for this use.
日本市场上的绝大多数灭火器泡沫库存为不能混溶于水的液体，如油、石脑油和烃类油以及已销售用于该用途的非全氟辛烷磺酸替代品。