Thanks to a previous co-worker of mine and friend, (Amateur Astronomers of Pittsburgh member), he posted this on Facebook (admittedly I had already purchased a pack of 6 glasses from Amazon). They tested well. (Thankfully).
How to test your eclipse glasses:
1) Put eclipse viewers on and look towards a shaded light indoors. It should not be visible. If you can see a shaded lamp – they are not safe.
2) Now look at an unshaded bulb – it should be quite dim. There’s a good chance you will see the light from a 60W equivalent light bulb, but it should not be bright with the Eclipse shades on.
3) Now go outside. Don’t look towards the Sun yet, but put the eclipse shades back on. Can you see other objects besides the Sun? Clouds? Other things? If so, the viewers are not safe.
4) Lastly, if the view is still dark, the shades might be better than really bad ones, but still not good enough. So quickly look towards the Sun, about a second or two. Is there a bright halo around it? If so, the eclipse viewers are not safe. Is the Sun dim, with little or no halo at all? Congratulations! The viewers are safe for all partial phases of the eclipse on Monday!
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