UJI77OFFICIAL_>

uji77uji77 (25). No followersNo postsNot following anybody3 SP#275,024. Joined July 2025 Active 10 months ago. Follow. Explore · All Posts · Communities · @uji77.SNI 6989. 77:2011. Standar Nasional Indonesia. Air dan air limbah Bagian 77 : Cara uji sianida (CN-) secara spektrofotometri. ICS 13.060.50. Badan Standardisasi Nasional