Some Aspects of the Autoclave Test for Testing the Durability of Glass

JSGT 1922 V06 T279-T288

 The author is of opinion that should the question of a standard test be considered, as has been suggested, by the Glass Standards Committee of the Society, the advantages of the autoclave test are sufficient to warrant its careful consideration. It is not thought, however, that one set of conditions could advantageously be specified, since this course would inevitably lead to results of doubtful value. It would appear that the principle governing durability tests for glasses is that the conditions should be sufficiently severe to afford sharp discrimination, but that much greater severity is detrimental. It is believed that satisfactory conditions can be established for commercial glassware of all degrees of durability, and that, although other or more vigorous conditions may be useful in control or investigation, the three tests described above should prove adequate for general purposes.

William Learmonth Baillie