Nitrogen Distillation Unit

1.Name of the Instrument: Nitrogen Distillation Unit (Kjeldahl Distillation Unit)

2.Working Principle : The instrument operates on the Kjeldahl principle. After acid digestion converts organic nitrogen into ammonium sulfate, alkali is added to release ammonia gas. The ammonia is distilled, absorbed in boric acid, and titrated with standard acid to estimate nitrogen content.

3. Applications and types of studies for which the instrument is used:
• Available and total nitrogen in soil
• Total plant nitrogen analysis
• Organic manure and fertilizer analysis
Types of studies:
• Soil fertility studies
• Nutrient management
• Fertilizer recommendation
• Organic farming research
• Crop nutrition studies

4. User Instructions A. Sample collection: :A. Soil, plant, organic manure, fertilizer
B. Preparation: • Samples should be dried and ground
C. Quantity
•Soil: 250 g
• Plant: 100 g

• Organic manure/ fertilizer: 200 g

4. Submission requirements:• • Clearly label sample.
• Mention sample type and location.