## Aim

The aim of conducting a LOD (Loss on Drying) test on cow dung is to determine the moisture content present in the sample.

## Procedure

Sample Preparation: Take a representative sample of cow dung. Ensure that the sample is homogenized by thoroughly mixing it to obtain a representative portion for testing.

Weighing: Accurately weigh an appropriate amount of the cow dung sample.

Prepare the Apparatus: Make sure the equipment is clean and calibrated.

Recording the Initial Weight: Place the weighed cow dung sample in the drying apparatus and record its initial weight.

Drying: Drying is carried out at a temperature between 100 to 105 degree Celsius till the weight is not constant.

Final Weighing: Weigh the sample again to determine the final weight.

## Observations

Weight of Dish= 35.02g

Weight of Cow dung + Dish = 112.24g

Mass of Cow dung = 112.24g – 35.02g

Mass of Cow dung = 77.22g

## Calculations

Final weight of Dried Cow dung = 48.42g – 35.02g = 13.4g

Calculate the percentage of moisture content in the cow dung sample using the following formula:

Moisture content (%) = [(Initial weight – Final weight) / Initial weight] x 100

Moisture content (%) = [(77.22g – 13.4g) / 77.22] x 100

Moisture content (%) = 82.64%

Solid content (%) = 17.36%

## Result

The moisture content in Cow dung is 82.64%.