Unibrol USP 250 mg Tablets called for quarantine
- 2021-01-18 14:44:11
The moisture content of Edible Oils is taken as the loss of weight resulting from air drying of Edible Oils sample up to 1050C for a period of one hour
The moisture content of Edible Oils is taken as the loss of weight resulting from air drying of Edible Oils sample up to 1050C for a period of one hour. The value recorded should be regarded as relative rather than absolute, as some thermal degradation and oxidation of the sample may occur during the test condition
· Analytical balance,
· Oven dryer,
· Prepare the requisite number of dishes by drying in an air oven with lids off. Transfer the covered dishes to desiccators and allow cooling to room temperature.
· Weigh the dish plus lid.
· Weigh 5 to 10g of sample evenly over the dish surface and replace the lid, determine the weight accurately, the sample addition and weighing should be carried out.
· Switch on the Oven dryer, and set the temperature below 1050C.
· Dry the test portion in flat dish with tight-fit cover, for 1 hour up to 1050C. Remove dish cover, cool in desiccators, and weigh.
· Set the Temperature at 105oC and retry during 1 hour and repeat process until change in weight between successive dryings at 1hour intervals is ≤ 2 mg.
· At the completion of drying, replace the lids and allow cooling to room temperature in desiccators, weigh the dish plus sample
Calculation and Expression of Results
Express the Moisture content as a percentage of the original sample weight,
Moisture, %m/m =
C: Weight in g of dry matter and dish,
B: Weight of Test sample portion and dish
A: Weight of Empty dish.
ISO 662: 2016 - Determination of Moisture Content and Volatile matter in animal and Vegetable Oils and Fats.