Conc. (ppm) Absorbance Calculated Conc. (ppm) Percentage Error
1.5 0.3717 1.4042 6.38
2.5 0.9308 2.4842 0.63
3.5 1.6591 3.8910 11.17
4.5 2.1390 4.8180 7.07
Table 2: Approximated concentrations of four unknown dilutions of standard human salivary amylase.