General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 21060-2007
Scope
This standard specifies two methods, namely method A and method B. Flowability is determined by measuring the time it takes for powder or granular plastic to flow out of the funnel. Information related to processability can be obtained from method A, while method B is designed for process control during production. NOTE: The method described is not applicable to all powder and granular plastics.
GB/T 21060-2007 Referenced Document
GB/T 2918-1998 Plastics--Standard atmospheres for conditioning and testing