ANN 111: Principles of Animal Nutrition and Feed Technology (2+1)

REAGENTS

Reagents

• Standard solutions ( 0.1N H₂SO₄ & 0.1N NaOH)
• Phenolphthalein indicator
• Concentrated H₂SO₄
• Methyl red indicator
• 40% NaOH solution
• Catalyst mixture

Catalyst Mixture

• This is used to induce oxidation and also to raise the boiling point without any spurting. This mixture is made up of copper sulphate, potassium (or) sodium sulphate and selenium.
• Different proportions are used in practice. In this laboratory the catalyst mixture is prepared by mixing 85 parts of CuSO₄ + 14 parts of sodium sulphate and 1 part of selenium.