Limit Test of Ammonium
Introduction In pharmaceutical substances, ammonium impurities ki presence product quality aur patient safety dono ko affect kar sakti hai. Isliye Limit Test of Ammonium perform kiya jata hai taaki ensure ho sake ki ammonium ions prescribed limit ke andar hain. 📌 Ye practical viva + exams me frequently poocha jata hai. 🎯 Aim of the Practical To determine whether the amount of ammonium impurity present in a given pharmaceutical substance is within the official pharmacopoeial limit. 🧠 Principle (Easy Language) Ammonium ions, alkaline medium me Nessler’s reagent ke sath react karte hain aur 🟡 yellow to brown colour produce hota hai. 👉 Test solution ka colour 👉 Standard solution ke colour se compare kiya jata hai. ✔ Agar test solution ka colour lighter ya equal ho → sample passes the test ❌ Darker ho → fails 🧪 Reagents Required Nessler’s Reagent Standard Ammonium Solution Sodium Hydroxide Solution Distilled Water 📌 Exam Tip: 👉 Nessler’s reagent = Ammonium detection reagent ⚗️...