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Lessing ring

Fig. II, 16, 1 illustrates a set-up for simple fractionation a Hempel column is shown, but it may be substituted by a modified Hempel, a Vigreux or an all-glass Dufiton column. The Hempel column may be filled with glass rings, h porcelain Lessing rings, or with porcelain rings. The mixture to be fractionated is placed in a bolt - head flask of convenient size (it should be one third to one half full), a few fragments of porous porcelain added, the column fixed in position, and a water condenserattacfied to the side arm. The distillate is collected in small flasks or in test tubes. The bulb of the thermometer should be just below the level of the side arm. Fig. II, 16, 1 illustrates a set-up for simple fractionation a Hempel column is shown, but it may be substituted by a modified Hempel, a Vigreux or an all-glass Dufiton column. The Hempel column may be filled with glass rings, h porcelain Lessing rings, or with porcelain rings. The mixture to be fractionated is placed in a bolt - head flask of convenient size (it should be one third to one half full), a few fragments of porous porcelain added, the column fixed in position, and a water condenserattacfied to the side arm. The distillate is collected in small flasks or in test tubes. The bulb of the thermometer should be just below the level of the side arm.
RASCHIG RING LESSING RING CROSS-PARTITION RING TRIPLE SPIRAL RING DOUBLE SPIRAL RING... [Pg.237]

All figures are on a dumped basis. Metal Lessing Rings are also made in stainless steel, copper, and aluminum. [Pg.250]

Lesquerolic acid, physical properties, 5 35t Lessing rings, 7 28 Lethal agents, 5 815—822 Lethal concentration (LC50), 23 112-113. See also LC50... [Pg.517]

Figure 4.13. (a) Ceramic Raschig rings (b) Ceramic Lessing ring (c) Ceramic Berl saddle (d) Pall ring... [Pg.217]

See other pages where Lessing ring is mentioned: [Pg.92]    [Pg.92]    [Pg.96]    [Pg.97]    [Pg.97]    [Pg.19]    [Pg.11]    [Pg.95]    [Pg.86]    [Pg.86]    [Pg.247]    [Pg.270]    [Pg.271]    [Pg.250]    [Pg.250]    [Pg.255]    [Pg.255]    [Pg.267]    [Pg.204]    [Pg.92]    [Pg.92]    [Pg.96]    [Pg.97]    [Pg.97]    [Pg.131]    [Pg.131]    [Pg.46]    [Pg.212]    [Pg.193]    [Pg.193]    [Pg.216]    [Pg.218]    [Pg.758]    [Pg.318]    [Pg.102]    [Pg.106]    [Pg.7]    [Pg.76]    [Pg.8]   
See also in sourсe #XX -- [ Pg.92 ]

See also in sourсe #XX -- [ Pg.270 ]

See also in sourсe #XX -- [ Pg.237 ]

See also in sourсe #XX -- [ Pg.92 ]

See also in sourсe #XX -- [ Pg.8 ]

See also in sourсe #XX -- [ Pg.8 ]

See also in sourсe #XX -- [ Pg.270 ]

See also in sourсe #XX -- [ Pg.237 ]

See also in sourсe #XX -- [ Pg.92 ]

See also in sourсe #XX -- [ Pg.270 ]

See also in sourсe #XX -- [ Pg.92 ]

See also in sourсe #XX -- [ Pg.189 , Pg.190 ]



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Ceramic lessing rings

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