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Chemical fume hoods are the first protection against exposure to dangerous chemicals that all laboratory users should have. They are the first line of defense against inhaling chemicals.
Material Safety Data Sheet(s) tell you how to properly use, store, and dispose of chemicals.
Well, if it's never been used or it's totally clean, there is no reason why you can't eat or drink out of laboratory glassware. If the glassware is contaminated with chemicals, it is, however, absolutely inadvisable to do so!
Taste is what sense you should never use in a laboratory
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Used coolant should be properly recycled.
Chemicals
we should not not eat or play in the laboratory because liquid or food may drop into chemicals and can be dangerous.
You should dispose of chemicals in bins at contained hazardous waste sites. These sites will properly dispose of your used chemicals for you.
There may be harmful chemicals in the laboratory, you may need special protection so you don't harm yourself.
Refuse should be carried ashore and properly disposed of by means readily available within the port's facilities .
Paints often contain toxins and pollutants that can seep into groundwaters if not disposed of properly. Most communities have special toxic round-up days when they accept batteries, paints, and other toxic chemicals.
The monitor and several components inside the cpu. they should be properly disposed of.
There should not be food in the laboratory because the food could contaminate any nearby chemicals or test items. Plus, if somebody temporary leaves food in a laboratory, then returns and begins eating the food, then the food itself could be contaminated with any nearby possibly harmful chemicals. So it is just a good idea to eat and drink your fill before entering the laboratory.
Ink cartridges should be disposed of properly no matter the brand. Take your empty cartridges to a local electronic store. They usually dispose of them properly.
Food and drinks should never be brought in the laboratory because there are alot of dangerous and harmful chemicals and if they came in your drink or food, food poisoning will occur.
The most common courtesy referring to the American flag is that the flag should never touch the ground. When the flag becomes tattered it should be disposed of properly.