I just asked this question at a local paint store and tried it at home. You put some rubbing alcohol on a cotton ball and rub it on the painted surface (you might want to do this in an inconspicuous place since it may leave a mark on your wall). If some of the paint comes off it is probably latex (water-based) paint. If it does not it is probably oil-based.
Look on the can at "cleanup" -if it says use thinners or mineral spirit, then it's oil paint. If it says 'water cleanup', it's latex.
Wash a small area with a solution of houshold detergent and warm water. Rinse well and dry it, then soak a soft rag in alcohol and rub it back and forth over the area. If paint comes off, it's latex paint and you can use another coat of latex paint. If the paint doesn't come off, it's oil-based, an oil-based primer is a must
As a vehicle refinishing industry professional I have had the opportunity to test all the major paint brands, Dupont, Sikkens, Sherwin Williams, PPG, Diamont, RM, and in many cases I have been able to spray them side by side to compare. I can attest that all companies have their stengths and weaknesses. However the product that was the easiest to spray and yielded not only the best looking results but fastest cycle times and productivity (body shop terminology) is Sherwin Williams.
Most paint companies had stopped using lead in their paint at that time, however, never assume that paint is lead free. Use a lead paint test to determine if lead if present prior to sanding or scraping.
From a paint contractor in arizona. Yes you can sand good enough to break the glaze. and than by a good latex enamel paint and give 2ea. coats. with time to dry between coats.
I am pretty sure you can that you can use a paint marker on a vinyl banner. I'd be careful though; test it out on a scrap piece if you can.
If you want to keep your paint color pure and cover your object and/or project with 1 or 2 coats, I wouldn't, it sounds like your trying to eliminate a step, I know they do it with stain and polyurethane but not with paint and poly. I think as long as its water-base poly & water-base paint (latex) its possible, try 1oz of paint, 1oz of poly and mix well and try it on a test piece to see if its to your liking. Good-Luck!
Water plus antacid pills are base. You can test it on litmus paper.
There is no sure fire way to test paint for lead via home based chemical compounds. The only way to test for lead is to buy a lead paint test kit.
Wash a small area with a solution of houshold detergent and warm water. Rinse well and dry it, then soak a soft rag in alcohol and rub it back and forth over the area. If paint comes off, it's latex paint and you can use another coat of latex paint. If the paint doesn't come off, it's oil-based, an oil-based primer is a must
test it
nothin
To test the water
watch paint dry
Yes
A base because of the effects it can have on protein.
No... Paint doesn't contain alcohol.
You can not test on that, because it is neither acid nor base. it is an 'neutral' gas, hardly soluble in water AND it does NOT react with water! as all acids and bases do. It 'big brother' carbon DIoxide is an acidical (=acid forming) oxide in water.