Manual of chemical analysis as applied to the examination of medicinal chemicals : a guide for the determination of their identity and quality, and for the determination of their identity and quality, and for the detection of impurities and adulterations : for the use of pharmaceutists, physicians, druggists, and manufacturing chemists, and of pharmaceutical and medical students . Gay Ltjssacs Bukettb. Fro. 18. litre-flasks for the preparation of the test-solutions (Fig. 15);these, when filled to a mark on the neck, have mostly a capa-city of 1,000 cubic centimetres (1 litre) of distilled vrat
Manual of chemical analysis as applied to the examination of medicinal chemicals : a guide for the determination of their identity and quality, and for the determination of their identity and quality, and for the detection of impurities and adulterations : for the use of pharmaceutists, physicians, druggists, and manufacturing chemists, and of pharmaceutical and medical students . Gay Ltjssacs Bukettb. Fro. 18. litre-flasks for the preparation of the test-solutions (Fig. 15);these, when filled to a mark on the neck, have mostly a capa-city of 1,000 cubic centimetres (1 litre) of distilled vrater; 54 MANUAL or CHEMICAL ANALYSIS. some cylindrical graduated litre-jars (Figs. 16 and 17), dividedinto 100 or 1,000 centimetre-parts, and used for the preparationof test-solutions as well as for the admixture of parts of a litre ;and one or several graduated tubes for the delivery and measure- rs. 20. Fig. Geislees Burette. MoHRS BtTBETTE. ment of the test-solutions; pipettes and burettes. The formerare provided either with a single mark upon the narrow neck,or are graduated into a number of cubic centimetres or partsthereof. In using pipettes, they are filled by sucking and then VOLUMETRIC ANALYSIS. 55 closed above with the forefinger of the right hand (Fig. 18);the delivery is effected by a more or less gentle displacement ofthe finger. Burettes are preferable for delivery and measure-ment, and are now most generally employed; they hold to acertain mark 100 or lesscubic centimetres, and aredivided into a correspond-ing number of equal parts. There are three kinds ofburettes in use, which differmainly in their constructionfor delivery : Gay Lussacsburette, Geislers burette,and Mohrs burette. Of these, Mohrs buretteis now in general use ; itconsists of a graduated glasstube, of about half an inchinside width, and about 30inches in length ; to its con-tracted lower extremity isfitted (Fi
Size: 1435px × 1742px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1, bookdecade1870, booksubjectpharmaceuticalchemistry
