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Why should screw cap of a reagent bottle be placed bottom up on the table?
Wiki User
∙ 9y ago
If the cover of a reagent bottle is placed on a table with the bottom down, it can pick up material from the table which would contaminate the contents of the reagent bottle after the cap is put back on the bottle.
Wiki User
∙ 9y ago
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How After removing a screw cap from a reagent bottle the cap should be placed?
on the counter with the inner side up
Why must the glass stopper of a reagent bottle never be placed directly on the laboratory bench?
The stopper of a chemical reagent container should be handled carefully for two reasons. Firstly, it may contain chemical residues which can be dangerous. Additionally, if the stopper is dirtied it may contaminate the reagent in the bottle when the stopper is put back on.
What is reagent bottle and how is used?
used as a container where you put chemicals that can't be thrown in the sink.
What should you do when you have finished using a reagent?
wash hands and clean glassware
Why should you not put down a cork for a chemical bottle when pouring?
It might pick up dirt and other contamination from the surface upon which it is placed, and this could then be transferred to whatever is in the chemical bottle. If this happens, any time you now use the chemical in the bottle, it is contaminated.
How After removing a screw cap from a reagent bottle the cap should be placed?
on the counter with the inner side up
Why must the glass stopper of a reagent bottle never be placed directly on the laboratory bench?
The stopper of a chemical reagent container should be handled carefully for two reasons. Firstly, it may contain chemical residues which can be dangerous. Additionally, if the stopper is dirtied it may contaminate the reagent in the bottle when the stopper is put back on.
What is reagent bottle and how is used?
used as a container where you put chemicals that can't be thrown in the sink.
Why should the spatula used for spooning solid chemical from a reagent bottle be clean and dry?
So you don't get water, dirt or other contaminants in the reagent bottle. The reagent bottle should contain chemicals that are as pure as possible. If each person put a dirty spatula in the bottle, the reagent bottle would very quickly accumulate all kinds of junk, ruining the chemicals inside or causing hazardous chemical reactions.
Why should the spatula used for spooning solid chemicals from reagents bottle be clean and dry?
So you don't get water, dirt or other contaminants in the reagent bottle. The reagent bottle should contain chemicals that are as pure as possible. If each person put a dirty spatula in the bottle, the reagent bottle would very quickly accumulate all kinds of junk, ruining the chemicals inside or causing hazardous chemical reactions.
Why is it important to a dry and clean spatula in scooping solid chemicals from reagent bottle?
This standard procedure -dry and clean spatula in scooping solid chemicals from reagent bottle- should prevent contamination of - and exposure to dirt and humidity to - the other chemical reagents.
Why should spatula used for spooning solid chemicals from reagent bottle be clean and dry?
use shuvel mate!!
If you have obtained more than the required amount of a solid chemical from a reagent bottle you should .?
dispose of the excess as directed
Why is it important not to pipette a reagent solution directly from bottle of a reagent stock solution?
Contamination. Your stock solution has a known molarity and should not be contaminated with anything. Even a "clean" pipette tip. Its just good lab etiquette.
When building a pallet to be over the road how should the cases be placed on the pallet?
They should be placed with the large cases on the bottom and smaller ones on top
How should a flag be placed over a casket?
The flag should be placed smoothly and gently around the casket; the stars should be at the bottom of the casket and the d trips are at the top,
When building a pallet to be shipped over the road how the cases should be placed on the pallet?
They should be placed with the large cases on the bottom and smaller ones on top
