cyberdigger
Well-Known Member
ORIGINAL: andy volkerts
So, Dont buy any of those bottles if they are SCA???
On the contrary, if it looks good with a sun tan, I buy it.. but if it's that awful deep dark purple I get hesitant..
ORIGINAL: andy volkerts
So, Dont buy any of those bottles if they are SCA???
ORIGINAL: GuntherHess
People throw the term 'nuked' around a lot and it can be misleading.
THere are at least two different processes that can change the color of bottles.
One is UVB light irradiation. THis is exactly the process that the sun uses to change a bottle.
This will typically change a clear or aqua bottle containing manganese to a purple color.
There is no way to differentiate a bottle turned purple by the UV sun from a bottle turned by a UV lamp.
People often assume that deeper purple bottles must be done by UV lamps (and this is often the case) but given enough manganese and enough sunlight , bottles can naturally turn deep amethyst. Back before people started UV irradiating bottles deep amethyst bottles were fairly uncommon just because the odds of a bottle laying exposed in the sun for many years, undamaged, is low unless you live in a desert area.
The second process is hard nuclear radiation such is found in food packing plants. This can turn manganese containing glass a very dark amethyst (sometimes almost dark purple/cobalt looking or black) that could never be acheived by UVB light. It will also turn other chemistry glass weird colors, like green cokes to brown. Cobalt bromos to weird greens. These bottles could rightly be called "nuked".