The Vacuum Glove Boxes are a
combination of the vacuum chamber and glove box. Vacuum Glove Boxes are made
from 1 thick clear acrylic walls for making the Vacuum Glove Boxes
water-tight/air-tight seal and capable of handling b29.8 in. Hg negative pressure.
An inactive atmosphere is created when the vacuum pump removes the gases from the
major chamber and replaced with argon or nitrogen gas. The chemicals should be
dry before being placed in a glove box. For performing experiments in a non-combustible
environment and low pressure which also requires the user to manipulate objects
or non-harmful substances, the researchers should use Vacuum Glove Boxes.
Where are Vacuum Glove Boxes utilized?
Mostly Vacuum Glove Boxes are used for the manufacturing of
semiconductor components, spacecraft engineering, lithium battery development
and constructing a simulated vacuum environment.
How to use a Glove Box?
1. Transfer
of objects into the Glovebox:
·
Both doors should be closed. Turn the valve to
fill and fill nitrogen in the chamber when it’s under vacuum. Make sure that
both the doors are closed.
·
Transfer the object from the outer door in the
chamber. For making it easier to reach it from inside the Glovebox the object
should be slide as deep as possible. After this shut the door which is
isolating the antechamber from the environment. Make sure that the door is not
over tighten.
·
After closing the doors, evacuate the chamber by
turning the valve and wait for the pressure to be at an acceptable vacuum
level. Turn the valve to refill and then fill the chamber with nitrogen. Keep
repeating this cycle till it is at least done 3 times.
·
Now the inner door to the glove box is opened.
Place the object in a safe location in the glove box after removing it from the
antechamber. Close the door to the antechamber.
2. Transfer of the Objects from the Glovebox
·
The antechamber should be filled with nitrogen.
Transfer the object in the chamber by opening the inner door and then the inner
door to the antechamber should be closed. Make sure that if the object is containing
chemicals it is properly sealed.
·
Remove the object from the outer door. The
object should always be removed from the outer door.
·
Turn the valve to evacuate after closing the
outer door. Make sure that you have closed the outer door before turning the
valve to evacuate.
General Tips on Chemicals, Apparatus,
Solvents and Waste Disposal
The apparatuses should by dry for entering
into the glovebox. Only dry and deoxygenated chemicals should be taken in the
glove box. Only the required amount of chemicals should be taken.20-ml vials
are to be used for the transfer of solids and non-volatile liquids. Lab wipes
and a rubber band should be used for wrapping and holding the top of the vials.
Teflon stoppered flasks should be used for transferring volatile liquids. After
finishing your work clean the area after taking out all the apparatuses. Use
the Teflon-stoppered round-bottom flasks while taking in solvents. Use only dry
deoxygenated solvents from the solvent stills. Every time the solvent bottles
stored in the box should be capped. The gloves can be damaged from the solvent
vapors. Lab wipes should be used for wiping the solvent spills. The waste
should be disposed of in properly labelled waste beakers. Before disposing of
the needles after use it is necessary to recap them. Replace the waste container
in the glove box after disposing of the waste container in the lab waste. The
waste should be disposed of in the misc. waste after cleaning up the spills on
the glove box. It is important that the liquid waste bottle should be capped
every time. Your hands from the gloves should not be removed or inserted
quickly. If you will quickly remove or insert your hands from the gloves the
ambient air from the external environment will enter through any micropores on
the gloves. The atmosphere in the box will get compromised if the needles and
blades are not carefully used because the gloves are extremely delicate. The
chambers should always be left under vacuum after use. Always keep the record
of the activity and maintenance performed on the glovebox. Maintenance of
regeneration of purification system, vacuum pump oil change, etc. should be performed
on a regular schedule.
Conclusion
The
information given above explains the meaning of Vacuum Glove Boxes, how
to use a Portable
Glove Boxes, transfer of the
objects from the glove box and general tips on chemicals, apparatus, solvents,
and waste disposal. The above information provides you the details of the glove
box.
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