This standard specifies the vacuum oven method for the determination of free water content in compound fertilizers. This standard does not apply to compound fertilizers that can produce non-moisture volatile substances during the drying process.
GB/T 8576-2010 Referenced Document
GB/T 8571 Preparation of laboratory samples for compound fertilizers
GB/T 8576-2010 history
2010GB/T 8576-2010 Determination of free water for compound fertilizers.Vacuum oven method
1987GB 8576-1988 Determination of free water content in compound fertilizer by vacuum oven method