Standard Scientific Glass Industries

Minimum order quantity: 1 Piece

Borosilicate Glass Essential Oil Determination Apparatus is for estimation of volatile oil lighter than water, receiver with stopcock, flask, oil separator tube and condenser.

Minimum order quantity: 1 Unit

Dolphin Labaware Borosilcate Glass Membrane Filter Assembly,

1000 ml, Conical Flask with 400 ml Cup.

The Dean And Stark Apparatus typically consists of vertical cylindrical glass tube, often with a volumetric graduation along its full length and a precision stopcock at its lower end, very much like a burette. The lower end of a reflux condenser fits into the top of the cylinder. Immediately below the joint between the condenser and the cylinder is a sloping side-arm that joins the cylinder to a reaction flask. The lower end the side-arm turns sharply downward, so that the side-arm is connected to the reaction flask by a vertical tube. The reaction flask is heated. Boiling chips within it assist with the calm formation of bubbles of vapor containing the reaction solvent and the component to be removed. This vapor travels out of reaction flask up into the condenser where water being circulated around it causes it to cool and drip into the distilling trap. Here, the immiscible liquids separate into layers (water below and solvent above it). When their combined volume reaches the level of the side-arm, the upper, less-dense layer will begin to flow back to the reactor while the water layer will remain in the trap. The trap will eventually reach capacity when the level of the water in it reaches the level of the side-arm. At this point, the trap must be drained into the receiving flask. The process of evaporation/ condensation/ collection may be continued until it ceases to produce additional amounts of water. Made of 3.3 borosilicate glass. Uniform wall distribution of the Flask makes it suitable for heating. Consists of a graduated Receiver with 0.1 intervals.

Minimum order quantity: 1 Unit

Essential Oil determination (Dean and Stark type) vertical tube combined with condenser and measuring tube with stopcock A return tube for the aqeous part of the distillate connects the bottom of the measuring tube and the vertical tube