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because it will contaminate the liguid/solution inside the bottle..tha's why you should always throw excess liquid solution. the contaminated chemical that is used could also cause a chemical reaction therefore having a high explosion risk.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoThe reagents may have become impure or otherwise changed their chemical properties as a result of exposure to the atmosphere or other conditions in the laboratory after being removed from their original containers.
Wiki User
∙ 13y agoAny unused chemicals that you return to the stock bottle have been unintentionally altered already, and so are not actually pure. The surface of the container that you measure it in has bacteria and other chemicals - whether it be from the cleaning agents used, or from them not being properly cleaned when they were last used - that contaminate the chemicals that you are using.
Wiki User
∙ 7y agoThe motivation is to avoid contamination of the pure reagent in the bottle.
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Do you return all unused chemicals to their original containers?
After my opinion it is not recommended in laboratory.
What are some chemical reagents?
Laboratory Supplies and Reagents : Reagents are perhaps one of the most important components of any laboratory. Along with various laboratory supplies, reagents are required for almost every reaction that takes place in the laboratory. There are many different kinds of reagents in the laboratory. Some can be rather dangerous while others are quite harmless and common. A reagent, also known as a reactant, is a substance or a compound that is consumed in a chemical reaction. It should be distinguished from solvents and catalysts, however, which are involved in a chemical reaction, but are not consumed in the process. Generally speaking, a reagent is a substance of some sort that is added to create a specific reaction or to test for a specific reaction. Additionally, reagents are used to see if another substance is present. Reagents are the laboratory supplies without which a laboratory cannot function. Even mechanical methods, those reactions that are carried out by machines, require reagents to perform their tests. A list of all possible reagents would seem to have nearly no end. Most reagents are simple chemical compounds, of which sulphur is one of the most common, while others are very specific compounds created for certain reactions. As laboratories supplies go, reagents also require a lot more care in storage. While most reagents can be kept at room temperature, some require special storage conditions. Some reagents, for example, lose their properties if exposed to bright sunlight for too long, while others need to be kept at below freezing temperatures - even though the reagent itself does not freeze. And as if these particular conditions aren't bad enough many reagents have an expiry date as well. For the most part, the expiry date on most reagents is far in the future. Others, however, start losing their potency as soon as they are opened and need to be used in a matter of days before becoming completely useless. Some reagents have a lifetime of a couple of hours and are mixed the moment it is to be used. The lifetime of these laboratory supplies is an important consideration when the stock manager has to order new supplies and a lot of money can be wasted on unused, inert reagents. In most laboratories, reagents are very important. They play a role in nearly everything that happens and without them a great many processes cannot take place. These are important laboratory supplies that need to be managed and used correctly if resources are not to be wasted.
How do you dispose of unused sulfuric acid?
== ==
What do you do with unused chemicals?
Dispose of unused chemicals according to your teacher's instructions.
What is a Unused neurotransmitters are absorbed in a process?
reuptake
What is the return policy on Dickies clothing?
Dickies has a 100% satisfaction guarantee on their clothing. Any item can be returned within 14 days with original packaging and unused.
Can you have a unused baby bottle pop code?
Yes!
Where must unused dts flight tickets be returned?
The CTO ( or the TO )
Material returned note?
is used to record any unused materials which are returned to stores. It is also used to update the stores records.
Is there a market for an unused champagne bottle 18 liters Melchior size?
no, sorry!
What percentage of my premium will be returned if I cancel car insurance?
This depends on your terms and conditions,but in general any unused premuim can be returned or tranfered to another car.
How do you get baby bottle pop codes?
Get a baby bottle pop candy and look all over it then you will see the code there will be unused codes on every pop.
Why shouldn't you return unused chemical back to the bottle?
Unused chemicals might be contaminated, and if you poured it back into the original container, you can ruin the entire contents.
Do you return all unused chemicals to their original containers?
After my opinion it is not recommended in laboratory.
What is goods on consignment?
goods received in good faith. if unused woulld be returned. if used channellized for get paid for used goods.
How much are original unused Woodstock tickets worth?
$40.00
How much is an original unused Beatle Shea Statium ticket worth?
A original Beetles ticket is worth $2,000,000. That is a lot of money.
