Table 2

Calibration equations for the concentration of the DR23 dye, СDR

TiO2 dose, g/LCalibration equationR2
0.50 СDR = 367.35·Red2 − 65.851·Red − 14.895 0.993 
0.75 СDR = 1,120.4·Red2 − 561.61·Red + 65.861 0.981 
1.00 СDR = 1,419.0·Red2 − 729.24·Red + 87.434 0.991 
1.25 СDR = 1,225.7·Red2 − 585.12·Red + 61.955 0.979 
1.50 СDR = 1,771.2·Red2 − 962.47·Red + 127.350 0.994 
TiO2 dose, g/LCalibration equationR2
0.50 СDR = 367.35·Red2 − 65.851·Red − 14.895 0.993 
0.75 СDR = 1,120.4·Red2 − 561.61·Red + 65.861 0.981 
1.00 СDR = 1,419.0·Red2 − 729.24·Red + 87.434 0.991 
1.25 СDR = 1,225.7·Red2 − 585.12·Red + 61.955 0.979 
1.50 СDR = 1,771.2·Red2 − 962.47·Red + 127.350 0.994 
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