Table 1.

PLSR results for all instruments to predict extract concentrations. Error values are in %w/w.

	Grape Seed Extract Content				Pine Bark Extract Content				Green Tea Extract Content
Instrument	NIRS XDS	NIR-S-G1	MicroNIR	MicroPHAZIR	NIRS XDS	NIR-S-G1	MicroNIR	MicroPHAZIR	NIRS XDS	NIR-S-G1	MicroNIR	MicroPHAZIR
Range (wl)	1100–2250	950–1650	950–1650	1630–2250	1100–2250	950–1650	950–1650	1630–2250	1100–2250	950–1650	950–1650	1630–2250
Pre-treat.	SG-31 + SNV	SG-21 + deTr	SG-11 + deTr + SNV	SG-11 + deTr + SNV	SG-21 + MSC	SG-31 + deTr + SNV	SG-21 + deTr + SNV	SG-11 + SNV	SG-21 + SNV	SG-11 + deTr	SG-21 + deTr + SNV	SG-11 + SNV
LV	7	8	12	9	7	12	14	10	4	8	12	6
RMSEC	0.393	2.037	1.769	1.929	0.234	1.822	1.704	1.580	0.394	0.550	0.795	0.982
R 2 C	0.992	0.786	0.839	0.809	0.995	0.688	0.717	0.744	0.985	0.973	0.943	0.915
RMSECV	0.446	2.271	2.128	2.140	0.277	2.083	2.061	1.790	0.423	0.630	0.914	1.092
R 2 CV	0.990	0.734	0.767	0.764	0.992	0.592	0.586	0.671	0.983	0.965	0.925	0.895