Why isn’t the result of 15.66 obtained?
• Moisture bonded inside of the material as crystal water is theoretically 15.66% however ambience has 10%RH ~ 90%RH moisture, which can adhere the sample in a mechanical fashion. Moisture that is 0.09% at the most of sample can adhere. Also, moisture and/or impurities left on a pan, measurement accidental errors, and combined of both can be the reason and the result may vary between 15.0 and 16.0% in actual measurement. • If the difference between the actual result and 15.66 is big it is concluded that heating temperature may be too low. When Sodium Tartrate Dihydrate is tested accuracy of measurement of MX/MF-50 should be set MID, heating temperature, 160C and after pre-heating for 8 minutes 5g of the sample be placed on a pan evenly.
1. Moisture bonded inside of the material as crystal water is theoretically 15.66%, however ambience has 10%RH ~ 90%RH moisture, which can adhere to the sample in a mechanical fashion. Ambient moisture that is 0.09% can adhere to most samples. Also, moisture and/or impurities left on a pan, accidental errors during measurement, or a combination of both can cause the result to vary between 15.0 and 16.0% in actual measurement. 2. If the difference between the actual result and 15.66 is large it is concluded that heating temperature may be too low. When Sodium Tartrate Dihydrate is tested, the accuracy of measurement of MS/MX/MF/ML should be set to MID of Standard Mode, with heating temperature of 160C; after pre-heating for 8 minutes, 5g of the sample should be placed on evenly on the pan.
