When you use it for Acetone, do you find it contains the acetone between uses or does it evaporate?

remember that the seal should be air tight , if you over tighten you will damage gasket and it will leak. I snug up filler cap and once I air charge it with air and product (acetone) I always keep a spray bottle of soapy water and spray all orifices check for bubbles (leaks) you can go back in weeks as long as there are no leaks then there is no evaporation. I find it to be a great product.

Can this work for a compressed air can for cleaning computers and cameras? I'm not sure if it will release air with enough force.

It will release air at as much pressure as you put into it which can be quite a bit. If doing a camera lens be very careful it is completely clean air otherwise you would pit the lens with any debri. The nozzle that comes with the sprayer may produce too wide of a spray for what you are trying to do. You may need to drill the nozzle out or modify the sprayer with something else. I use nozzles for small air guns to focus the spray. Hope this helps.

can these be used to spot spray insecticide or weed killer around house and garden? how far will they spray?

I'd just get a cheap plastic sprayer like the ones at the big box home centers. This won't shoot far enough and the control of the stream/spray is not that good.

can you connect a flexible hose at the discharge to have more reach in tight spaces???

I know that I could do it. You will need to make an adapter or find a connector/hose that has the correct thread. I used an air gun nozzle set that had male threads. All I did was put a nut between the nozzle and the discharge thread to adapt, it works perfect. It will shoot a stream about 20 ft. I use the nozzle to inject Timbor termite killer into wood beams. Sorry I do not have the thread size in front of me but it is pretty standard.

Brand	Vaper
Tank Volume	0.25 Gallons
Color	Red
Recommended Uses For Product	Removes Propellants
Material	Plastic
Item Weight	2.5 Pounds
Product Dimensions	6.7"W x 8.5"H
Style	Red
Power Source	Manual Power
Included Components	Vaper - Spot Spray Non-Aerosol Sprayer (19419)
Model Name	19419
Maximum Pressure	150 Pound per Square Inch
Hose Length	1.5 Meters
UPC	802090194191
Global Trade Identification Number	00802090194191
Manufacturer	Star Asia Usa
Item Weight	2.45 pounds
Item model number	19419
Is Discontinued By Manufacturer	No
Manufacturer Part Number	19419
OEM Part Number	19419

Vaper 19419 Red Spot Spray Non-Aerosol Sprayer (Red) - 32 oz.

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