Society of Glass Technology · [Sheffield] · leaf 588
e obstruc-tion. In electric control for which the abovewas designed, banks of carbon filament lamps asresistances were employed instead of the usualrheostats in series and in parallel. This was statedto facilitate greatly the change from one steadytemperature to another, as, once the… … 212. Report on Standardisation of Sizes and Shapes ofApparatus. W. D. Collins (J. Ind. Eng. Chem., 1921, 13,1070; 1922, 14, 654 and 738).—The report embodied the findingsof a committee of the (American) Scientific Apparatus MakersAssociation and of the (American) Committee on GuaranteedReagents and…
Glass
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