Table 2.

The estimated absorption coefficients of samples at 1210 nm.

	${\mu }_a$ at 1210 nm measured optically	${\mu }_a$ at 1210 nm measured via photoacoustic signal
Distilled Water	0.852 ± 0.045 cm−1
Mineral Oil	1.318 ± 0.024 cm−1
Castor Oil	1.100 ± 0.030 cm−1	1.170 ± 0.10 cm−1
Olive Oil	1.164 ± 0.026 cm−1	1.125 ± 0.13 cm−1
Glycerine	0.716 ± 0.038 cm−1	0.85 ± 0.10 cm−1
Cholesterol	1.61 ± 0.12 cm−1
Cholesterol Oleate	1.66 ± 0.16 cm−1