Introduction

INTRODUCTION

  • The material obtained after complete combustion of a sample is total ash.
  • It comprises of two portions:
    • The portion that is soluble in dilute acids (soluble ash), contains all essential minerals and that is the useful portion of the ash.
    • Other portion, insoluble in dilute acids (insoluble ash) consists mainly of silica. For the most part, it represents impurity or adulteration.
Last modified: Wednesday, 18 August 2010, 6:29 AM