Explain the common stapes of Washing glassware and plastic ware In laboratory
The common steps for washing glassware and plasticware in a laboratory are as follows:
1. Pre-rinse: Begin by pre-rinsing the glassware or plasticware with warm water to remove any visible debris or residues.
2. Detergent washing: Use a mild detergent or laboratory cleaning solution to wash the glassware or plasticware. Apply the detergent to a sponge or brush and thoroughly scrub the interior and exterior surfaces of the items. Pay special attention to any stuck-on substances or stains.
3. Rinse: Rinse the glassware or plasticware with warm water to remove the detergent or cleaning solution. Ensure that all traces of the detergent are eliminated.
4. Special treatments: Some laboratory glassware may require special treatments. For example, acid-resistant glassware may need to be soaked in a diluted acid solution to remove stubborn residues. Follow the instructions specific to the type of glassware being cleaned.
5. Rinse again: Rinse the glassware or plasticware with distilled or deionized water to remove any impurities in the tap water that may leave residues or cause contamination.
6. Drying: After the final rinse, allow the glassware or plasticware to air dry on a clean, dust-free surface or use a clean lint-free cloth to wipe them dry. It is important to ensure that the items are completely dry before use or storage to prevent any potential contamination.
7. Inspection: Before using the glassware or plasticware, inspect them to ensure there are no visible residues or damages. If any issues are detected, repeat the cleaning process or discard the item if necessary.
It is essential to follow any specific cleaning instructions provided by the laboratory or the manufacturer to maintain the integrity and functionality of the glassware or plasticware.