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