4. ACID Hydrochloric acid 1l 5 INSOLUBLE Filter paper Whatman 100/pk 5 MATTER No.41 or equivalent Silica crucible 100ml capacity 20 5. CALCIUM Calcium carbonate 500g 3 AND Hydrochloric acid 1l 5 MGNESIUM EDTA 500g 3 Eriochrome black T 25g 3 indicator Rectified spirit 2.5l 20 Sodium hydroxide 500g 2 Murexide indicator 25g 5 Sodium chloride 500g 3 Calcein indicator 50g 3 Thymolphthalein 100g 5 Potassium chloride 500g 5 Ammonium chloride 500g 3 Ammonium hydroxide 500g 3 Disodium ethylene 500g 2 ethylene diamine dehydrate Magnesium sulphate 500g 3 (MgSO4.7H2O) 6. SULPHATE Gravimetric 1l 3 method Hydrochloric acid Barium chloride 500g 2 Methyl orange 50g 3
4. ACID INSOLUBLE MATTER Hydrochloric acid 1l 5 Filter paper Whatman No.41 or equivalent 100/pk 5 Silica crucible 100ml capacity 20 5. CALCIUM AND MGNESIUM Calcium carbonate 500g 3 Hydrochloric acid 1l 5 EDTA 500g 3 Eriochrome black T indicator 25g 3 Rectified spirit 2.5l 20 Sodium hydroxide 500g 2 Murexide indicator 25g 5 Sodium chloride 500g 3 Calcein indicator 50g 3 Thymolphthalein 100g 5 Potassium chloride 500g 5 Ammonium chloride 500g 3 Ammonium hydroxide 500g 3 Disodium ethylene ethylene diamine dehydrate 500g 2 Magnesium sulphate (MgSO4.7H2O) 500g 3 6. SULPHATE Gravimetric method Hydrochloric acid 1l 3 Barium chloride 500g 2 Methyl orange 50g 3