The testing instrument is used to calculate the percentage of ash same as the index of added mineral loading. To perform the test, weight a piece of specimen. Now burn the specimen and weight the ash of the burnt sample and calculate the percentage easily. The test procedure involves tearing the specimen in small grates and place it in the already weighed crucible. Now check the weight again.
Now carefully heat the crucible over a Bunsen burner to certain that the paper burns until it is fully burnt. After performing this, transfer the crucible into a presto muffle furnace at 800+25. C or as per the set standards and generate the heat in the furnace until all the carbonaceous matter is burnt off.
Now cool down the crucible in desiccators and measure its weight. Repeat the operation until the weight become constant.
How to calculate the ash content?
Ash, % by weight = 100 a-x/b-x
A= Weight in gram of the crucible and the ash (w3)
B= weight of the crucible and the material (W1) (in grams)
X= weight of the crucible (W2) (In grams)
For accurate results, make three tests and report minimum, maximum and average.