A cikin Amurka, har zuwa ƙarshen Nuwamba 2001, an yi amfani da daidaitattun 209E na tarayya (FED-STD-209E) don ayyana buƙatun don ɗakuna masu tsabta. A ranar 29 ga Nuwamba, 2001, an maye gurbin waɗannan ƙa'idodin ta hanyar buga ƙayyadaddun ISO 14644-1. Yawanci, daki mai tsafta ana amfani da f...
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