I check my PPM with a HM Digital Com-100.
I got distracted while making CS one night and went way over planned time while cooking it. My ppm when I stopped cooking it was about
24.6 ppm. The color was dark amber by the next day. It has now stabilized at
10.3 ppm.
I deliberately cooked another batch to
16 ppm trying to get a stable 10 ppm CS with smaller particle size. It stabilized at
10.8 ppm and a light yellow color.
I deliberately cooked my latest batch to
13 ppm and it stabilized at
9.8 ppm and it's almost colorless. It has strong Tyndall effect and a few sparkles just like the other batches.
Seems that the higher you cook it, the larger the percentage of collapse. You also finish with much larger particles when you push it high. The color is proof of that.
When I "cook it" for a stable 8-10 ppm, I cook to 13-16 ppm and that's been pretty reliable for a stable 8-10 ppm and a colorless or light yellow color.
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