How to clean and dry glassware?

The glassware come in contact with, either directly or indirectly via medium, must be free of contaminating substances. Glassware often is contaminated or can easily become contaminated so it is easily important that all glassware should be handled with extreme care and its treatment needs be closely supervised.

Procedure:-

1. First of all, labels and ink marking should be removing by wiping with acetone before washing and immediately rinse it.
2. Clean the glassware with the help of detergent and then dipped into sulphuric acid solution containing potassium dichromate, which is effective for acid treatment of glassware.
3. Glassware is placed in freshly prepared acid bath for at least one hour. Now the cleaning solution becomes dark brown, and then it should be discarded.
4. Glassware removed from solution and placed in a suitable container distilled water and thoroughly rinsed.
5. After rinsing, glassware should be dried thoroughly in the oven at 70*be covered and air-dried overnight.
6. Wrap the glassware with the paper and fixed the autoclave tape. The color of the tape is white, acts as indicator to showed us the complete sterilization.
7. Put the glassware in the autoclave bag. After 15 minutes, we can find the autoclave tape black, shows complete sterilization.