This comprehensive laboratory manual provides a step-by-step guide to the standardized chemical methods used for analyzing nitrogenous compounds in fertilizers. Designed in accordance with Indian Standards (IS), the book is tailored for professionals, quality control chemists, researchers, students, and laboratory technicians working in the field of agricultural and industrial fertilizer testing.
Structured with clarity and precision, the manual begins with fundamental guidelines on lab safety, sample handling, and preparation protocols. It then delves into detailed methodologies for the estimation of key nitrogen components—Total Nitrogen (Kjeldahl Method), Nitrate Nitrogen, Ammoniacal Nitrogen, Biuret, and Urea Nitrogen—with a dedicated section on Arsenic content determination using the IS-specified Gutzeit Method.
Each analytical method includes:
• Theoretical principles
• Reagents and apparatus required
• Procedural steps with critical control points
• Calculation formulas
• Precautions and interferences to consider
The manual also emphasizes quality assurance, offering statistical tools for data validation and annexures for ready reference—covering standard solution preparation, IS code listings, and sample data sheets.
Whether you're setting up a fertilizer lab, training technical staff, or ensuring regulatory compliance, this book serves as an authoritative and practical resource for nitrogen analysis in fertilizers.