- In terms of color with spectrophotometer At a wavelength of 400, 570 and 600 nm, and the spread of the sample before curing,
curing in water bath 50 minutes at 32 degrees Celsius
- measured by color. spectrophotometer At a wavelength of 400, 570 and 600 nm, and the spread of samples after curing Notes to spread both PCA and PDA.
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