Step1: Add 2 g pre-dried powdered sample in that crucible and record as Initial weight.
place crucible
add sample
ON
TARE
0.0 gms
Step2: Put this sample crucible in muffle furnace and set the temperature to 500°C
Open Lid
Place Crucible
Close Lid
Turn On
PT 000C
ST 000C
Switch off the muffle furnace after 5 hrs and wait for 1 hr.
Step3: Then take out sample crucible carefully with help of tong and confirm proper ashing of sample
Open Lid
Remove Crucible
Close Lid
Step4: Take weight of sample crucible and recorded as final weight of sample
place crucible
ON
TARE
0.0 gms
Total Ash Content will be calculated using the following equation
Weight of Crucible (gms) = 10
Weight of Initial Sample (gms) = 2
Weight of Final Sample (gms) = 11.5 - 10 = 1.5
Total Ash(%) = 1.5 / 2 * 100 = 75%
Step5: Take the ash in a beaker and add 25 mL of hydrochloric acid to it.
Put ash in beaker
Pour hydrochloric acid
Step6: Heat the sample beaker for 5 minutes using hot plate
Turn On
Place Beaker
Remove Beaker
Step7: Filter it carefully using ashless filter-paper
Place filter paper
Place Funnel
Pour Acid
Step8: Put the sample crucible in muffle furnace and set the temperature to 500°C
Open Lid
Place Crucible
Close Lid
Turn On
PT 000C
ST 000C
Step9: Then take out sample crucible carefully
Open Lid
Remove Crucible
Close Lid
Step10: Take weight of sample crucible and recorded as final weight of sample
place crucible
ON
TARE
0.0 gms
Total Insoluble Ash Content will be calculated using the following equation
Weight of Crucible (gms) = 10
Weight of Initial Sample (gms) = 2
Weight of Final Sample (gms) = 11 - 10 = 1
Total Insoluble Ash(%) = 1 / 2 * 100 = 50%