Specific surface area test sample quality
Analyze the sample on nitrogen adsorption and suggest that the sample tested should provide a total surface area of ​​40 to 120 square meters. Less than 10 this range, the test results may be unstable; greater than this range, increase the unnecessary analysis time.
However, when the sample has a high specific surface area, the minimum sample amount should not be less than 100 mg, which can reduce the weighing error. For such samples, the weighing process must be more serious, and small deviations in sample weight can cause large changes in the test results. Too little sample volume or very small specific surface area will affect the test results.
However, when the sample has a high specific surface area, the minimum sample amount should not be less than 100 mg, which can reduce the weighing error. For such samples, the weighing process must be more serious, and small deviations in sample weight can cause large changes in the test results. Too little sample volume or very small specific surface area will affect the test results.