User:Nadiezda Fernandez-Oropeza/Notebook/Notebook/2010/09/21: Difference between revisions

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==Entry title==
==Basic Notes for working on a Laboratory==
* Insert content here...
* Some basic procedures when working on a chemistry lab.


===Cleaning===
For proper cleaning of the glassware, check Koch Lab protocols: General Lab Techniques.
Important side notes:
* If you are using a sponge to clean the lab items, do not use the coarse side of the sponge when cleaning things made out of metal.
* Nitrogen gas is used to dry certain lab items.
* For a proper removal of the plastic gloves, check the following website:
[[http://education.qld.gov.au/health/pdfs/healthsafety/handsgloves.pdf  Proper glove removal]]
====Disposal of used acid and used base====
Pour the excess of acid or base into a big beaker full of RUNING water.
Let it flow until everything is dissolved. 
**Note: Water should be flowing for a considerable amount of time.
The concentrated acid or concentrated base is always added to water and not the other way round for two main reasons:
# This is an exothermic reaction. Thus, a lot of water is needed to absorb the heat generated. In other words, it is done to take advantage of the relatively high heat capacity of water.
# If water was added into acid, there is the risk of the acid splashing and reaching you. Adding the acid to the water cancels this risk off.
Gloves, wax weighting paper, and any other material that has or may have been in contact with the acid of base should be discarded in a properly designated waste bag.


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Revision as of 11:32, 21 September 2010

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Basic Notes for working on a Laboratory

  • Some basic procedures when working on a chemistry lab.

Cleaning

For proper cleaning of the glassware, check Koch Lab protocols: General Lab Techniques. Important side notes:

  • If you are using a sponge to clean the lab items, do not use the coarse side of the sponge when cleaning things made out of metal.
  • Nitrogen gas is used to dry certain lab items.
  • For a proper removal of the plastic gloves, check the following website:
[Proper glove removal]

Disposal of used acid and used base

Pour the excess of acid or base into a big beaker full of RUNING water. Let it flow until everything is dissolved.

    • Note: Water should be flowing for a considerable amount of time.

The concentrated acid or concentrated base is always added to water and not the other way round for two main reasons:

  1. This is an exothermic reaction. Thus, a lot of water is needed to absorb the heat generated. In other words, it is done to take advantage of the relatively high heat capacity of water.
  2. If water was added into acid, there is the risk of the acid splashing and reaching you. Adding the acid to the water cancels this risk off.

Gloves, wax weighting paper, and any other material that has or may have been in contact with the acid of base should be discarded in a properly designated waste bag.