Sources Of Errors In Tga:

There are a number of sources of error in TGA, and they could lead to inaccuracies within the recorded temperature and mass data. A few of the errors might be corrected through placing the thermobalance at proper place and handling it along with great care. For knowing we are discussing a few general sources of errors during operation of a thermobalance.

Buoyance effect:

If a thermally inert crucible is heated while empty there is common an apparent weight modifies as temperature increases. This is because of effect of change within buoyancy of the gas in the sample environment along with the temperature, increase convection and probable effect of heat from the furnace in the balance itself. Present, in most modern thermobalances, this effect is negligible. Therefore, if essential, a blank run along with empty crucible could be performed over the appropriate temperature range. The resultant record could be used as a correction curve for subsequent experiment performed in the similar condition.