What is the difference between distilled water and water for injection?

1, with different properties: distilled water is distilled water and condensed water. Water for injection meets the requirements of China Pharmacopoeia.

2. Different characteristics: distillation is a thermodynamic separation process, which uses the different boiling points of components in mixed liquid or liquid-solid system to evaporate low-boiling components. There are two characteristics in the design and manufacture of water for injection system: one is the increasing use of disinfection/sterilization facilities in the system, and the other is the evolution of pipeline distribution system from traditional water supply pipeline to circulating pipeline.

3. Different operation modes: The operation of water injection system needs to consider the regular cleaning and disinfection of pipeline distribution system. One is to make the water into the same batch number as the product, which is the batch operation mode. Distilled water contains a small amount of water-soluble components in glass. Therefore, when carrying out secondary or multiple distillations, it is necessary to use a timely distiller to obtain very pure water, and the obtained pure water should be kept in a timely or silver container.

Extended data:

Precautions:

1, the shell must be well grounded to avoid danger.

2. Clean the inside of the pot before each use, drain the water and replace it with fresh water. Be careful not to damage the tin layer on the surface.

3. If conditions permit, use deionized water instead of tap water.

4. Only after the pot is filled with enough water can it be electrified and heated. The water source cannot be interrupted during the work, and the liquid level should always be kept at the water level. If there is no water or little water in the pot, the electric heating tube will burn out.

5. When replacing the electric heating pipe, the gasket at the joint of the water pipe must be lined to ensure that the seal is watertight, otherwise the water droplets attached to the head of the electric heating pipe will lead to insulation breakdown. The connection between the lead wire and the bolt of the electric heating tube should be tightly pressed, otherwise the contact resistance is too high, which will cause serious heating, and the electric spark may also burn the head of the electric heating tube.

6. Regularly remove the scale in the inner wall of evaporation pan, the surface of electric heating tube, the inner wall of condenser, the surface of condensing tube and the outlet pipe of condenser, so as not to affect the condensation effect, reduce the thermal efficiency, block the pipeline and reduce the service life.

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