Steam splash-heads

Fig. 11, 56, 9 depicts a splash head with a pear-shaped bulb and vertical delivery tube this is useful for steam distillation. The bottom cone is 24, 29 or 34 and the side cone is 19 or 24. 

Figure 8.2 Different apparatus used for steu distillation. A aodified Gaman steam distillation apparatus A, steam generation flask B, sample chamber C, splash head D, condenser B, delivery tube F, separatory funnel. B = micro steam distillation apparatus A, boiling flask B, collection bulb C, water return arm D, Condenser. C - steam distillation apparatus using a Dean and Stark type trap. D = Nielsen-Kryger steam distillation apparatus.

The flask is fitted with two inlet tubes, one narrow and adjustable positioned above the surface of the adamantanone suspension, and the other reaching half-way between the bottom of the flask and the surface. Both tubes are connected to the steam supply. The flask iB connected through a splash head and a short adapter to a 1-1. throe-necked round-bottomed... 

A simple apparatus for steam distillation is shown in Fig. 2.102. Flask A contains the liquid to be steam distilled it is fitted with the splash-head B which prevents the carry-over of the contents of the flask A into the receiver. To carry out a steam distillation, the solution (or mixture of the solid with a little water) is placed in the flask A, and the apparatus is completely assembled. Steam is passed into flask A, which is itself heated by means of a flame to prevent too rapid an accumulation of water. If the substance crystallises in the condenser and tends to choke it, the water should be run out of the condenser for a few minutes until the solid material has been melted and carried by the steam into the receiver the water should then be cautiously readmitted to the hot condenser. It is best to use a condenser of the double surface type if the rate at which the steam distillation is carried out is rapid if necessary two such condensers connected in series may be used since in most steam distillations best results are obtained when the process of distillation is carried out rapidly. The passage of steam is continued until no appreciable amount of water-insoluble material is... 

Fig. 4.5 Scheme of the Tecator KjelTec semi-automatic distillation unit 1 for steam distillation of ammonia. (1) Condenser (2) receiver flask (3) alkali pump (4) splash head (5) digestion tube (6) steam valve (7) expansion vessel (8) steam generator (9) electrodes. (Courtesy of Tecator). 

Place 250 ml commercial TBP and 100 ml 0.5 NaOH in a 1-litre flask fitted with a splash head for steam distillation. Heat the mixtime to 80 C, but take care not to heat above this temperature. Note (a). Remove the source of beat and steam distil for 3 hr, rejecting the distillate. Note (b). 

A facial steam can help you put your best face forward. To deeply clean the pores of dry or irritated skin, boil a pot of water, remove from the heat and add a generous handful of elder blossoms. Stir and place on a padded countertop. Drape a towel over your head and gently lean close to the steaming tea to sweat out grime, imbedded oil and your make-up. Deeply breathe the lovely aroma as you clean your skin. After about five minutes, splash your face with cool water. This is also a beneficial remedy for acne. 

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