pH scale - numerical system running from 0-14 and used to express the alkalinity or acidity of a chemical solution. 7 is neutral. Solutions with a lower pH value are increasingly acidic, and those with a higher pH value are increasingly alkaline ...
It is higher on the pH scale, alkaline in nature. Most developers at the proper temperature call for between six and eight minutes of development time, though times may vary according to temperature variances.
Modelscope A device employing a short rigid endoscope fitted with a right angle mirror at its tip, used to photograph scale models from a seemingly eye level viewpoint Search SWPP and BPPA ...
See also: Scale, Alkali, Value, Photograph, Shutter
 
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