Shot using a Nikon Labophot-Pol polarizing scope with Nikon D-70 and a Scopetronix MaxView eypiece adapter. Potassium acid phthalate is a primary standard used in analytical chemistry to calibrate base titrant solutions. These images are composed within Golden Rectangles, aspect ratio 1: 1.618...
Potassium Acid Phthalate Precipitation Crystals
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