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GB/T 32361-2015 Test methods for pore size properties of membrane filters—Bubble point and mean flow pore test 255.0 via email in 1~3 business day valid
GB/T 28230-2011 Enumeration of coliforms in ballast water of entry-exit ships by membrane filtration 120.0 via email in 1~3 business day valid
GB/T 33898-2017 General technical specification for membrane bioreactor 255.0 via email in 1~3 business day valid
GB/T 28229-2011 Detection of diarrheagenic Escherichia coli in ballast water of entry-exit ships 180.0 via email in 1~3 business day valid
GB/T 25279-2010 Hollow fiber flat-plat membrane module 180.0 via email in 1~3 business day valid
GB/T 28228-2011 Detection of Listeria monocytogenes in ballast water of entry-exit ships 180.0 via email in 1~3 business day valid
GB/T 32360-2015 Test methods for ultrafiltration membranes 225.0 via email in 1~3 business day valid
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