Transactions of the INDIAN CERAMIC SOCIETY Vol. 21 1962
A Note on the Indian Standard Method for
Testing Alkalinity of Glass
PROKASH KUMAR CHOWRASHI AND SACHCHIDANANDA KUMAR
Pages : 102-106
DOI : 10.1080/0371750X.1962.11011994
The Indian Standard method for testing alkalinity of glass was modified
to improve the accuracy and raprdity of the m.ethod. Ten commercial glasses
having widely different chemical durabilities were tested for alkalinity· and the
extracted amounts of alkalies were estimated flam!] photometrically as well
as by titration. The results obtained by the two methods show that the extracted
glass conftituents other than the a~~alies did not have any effect on the titre value.
The same sample~ were also tested according t.o the DIN method as proposed
by the International Standards Orgarl!isation and the ratio of the titre values as
obtained by the !._S and D!l:L methods was found to be 0.55.