Ive heard of using a cigarette lighter ot light at night to notice a
difference in the light, or reflection. I cant say how to actualy do it,
but it is done. If a name brand don`t worry, Anderson and Pella glass
you can`t tell a difference. I know of no test for Argon.
I've seen sales demos where they hold a high-wattage light bulb against
low-e vs clear, and have you feel the heat through the clear and compare it
to the low-e pane.
Low-e always appears a little dark and more reflective during the day, too.
The surface of glass with the low-e coating can be checked with an ohmmeter.
Probes placed about 1" apart should give a reading of around 100 Ohms. If
you have insulating glass the low-e side will (or should) be inaccessable.
That question was answered as to your testing at alt home repair.
Someone there will know the way for you to test it. But whos widows.
Anderson and Pella it is stated on the glass or in serial numbers etched
in that can be verified with the company. For warranty purposes this is
their protection. I dought you will get regular glass in windows from
many major companies. Today it is Low E argon. Was the South side
replaced, that is where you need it most.
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