Aniline Oil is brown-coloured liquid, heavier than water and pure enough for the preparation of the aniline colours. It is oily poisonous liquid amine obtained from nitrobenzene and used to make dyes, plastics, and medicines. The aniline oil is also removed by means of filter paper. Aniline oil boils at 175° or 180°C.

In the case of an anion exchange membrane, free anion in the electro-deposition coating bath move from the painting bath to cathode. Then free anions permeate the anion exchange membrane, move to the electrode solution and connect with H+ ions produced at the anode to form acid and discharged from the upper overflow nozzle together with the electrode solution. In the case of cation exchange membranes as well as anion exchange membranes, anions in the electro-deposition coating bath move from the painting bath to the anode. However the cation exchange membranes prevent anions from permeating to the electrode solution, whereas H+ ions permeate the cation exchange membranes and acid remains in the painting bath as it is.

The anion exchange resins are commonly used resin. It contains hydroxide ions and are divided into strong and weak base classes. These are used to remove negatively charged ions, such as SO2-4. Anion exchange resins are generally lower in their exchange capacity and durability than cation exchange resins and are seldom used for industrial separation.

Annealing Furnace is described having a rotatable table with five stations such as loading station, a preheating station, a heating station, a cooling station and an unloading station. The system is very efficient when one charge is cooling a succeeding charge being heated while the next succeeding charge is being preheated.

Annealing Inductors are used for annealing of stainless steel, assembled and cast into high temperature refractory.

Annealing Lines are used for the thermal treatment of sheet and strip. These are used to produce micro structurally engineered steels. These are characterized by tight control of the annealing process, high throughput rates, high yields, significant energy savings, and by the production of high quality products.