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uji778102019 SNI 6989.77-2011-Pengujian Sianide. SNI 6989.77:2011. Standar Nasional Indonesia. Air dan air limbah – Bagian 77 : Cara uji sianida (CN-)uji77 (25). No followersNo postsNot following anybody3 SP#275,024. Joined July 2025 Active 10 months ago. Follow. Explore · All Posts · Communities · @uji77.