Moisture Content Proximate Analysis Procedure
🔥 The procedure demonstrated is the moisture content test, one of the proximate analyses conducted in the Nutrition Science and Feed Laboratory of the Faculty of Animal Husbandry and Agriculture, Diponegoro University.
🌡️ The main objective is to determine the water content of a feed material or sample.
🔥 The crucial step involves heating the sample in an oven at 105°C for six hours until a constant weight is achieved.
🔬 Necessary equipment includes a desiccator, crucibles, analytical balance, oven, and the feed sample material.

Handling the Desiccator
🌬️ To prevent steam from escaping the sample during cooling, carefully turn the valve on the desiccator lid slowly to ease lid movement.
🔒 Ensure the desiccator valve is then turned until it is tightly sealed to prevent sample vapor from escaping.

Moisture Content Calculation
📊 The final result for moisture content ($X$) is calculated using the formula:
$$\text{Moisture Content (\%)} = \frac{Y - Z}{Y - X} \times 100\%$$
Where:
- $X$ is the weight of the crucible after oven drying (in grams).
- $Y$ is the initial weight of the sample (in grams).
- $Z$ is the weight of the crucible plus the sample after oven drying (in grams).

Key Points & Insights
➡️ The experiment requires achieving a constant weight of the sample after drying to ensure accurate moisture removal.
➡️ Proper handling of the desiccator valve is critical to maintain the integrity of the sample's weight measurement during the cooling process.
➡️ The calculation formula $\frac{Y - Z}{Y - X} \times 100\%$ is used to accurately determine the percentage of moisture loss relative to the initial sample weight.

📸 Video summarized with SummaryTube.com on Dec 29, 2025, 05:53 UTC