Visible/Near-Infrared Spectroscopy Devices and Wet-Chem Analyses for Grapes (Vitis vinifera L.) Quality Assessment: An Environmental Performance Comparison

Table 2

Quantity, allocation factor, lifetime, and amount per analysis for the TA determination.

	Unit	Quantity (Q)	Allocation factor (Af)	Lifetime (years)	Lifetime (no. analyses)	Amount per analysis^†
Input
Must	g	7.5	1.00	1	1	7.500
Automatic volumetric titrator	g	20 × 10^3	0.50	15.00	6750	1.481
Computer	g	13 × 10^3	0.33	15.00	6750	0.642
Plastic glasses	g	2.27	5.00	1	1	11.350
Deionised water	g	270	1.00	1	1	270.000
NaOH (0.1 mol/L) as titrant	g	17.5	1.00	1	1	17.500
Buffer solution (pH 4)	g	50	2.00	1	1	100.000
Buffer solution (pH 7)	g	50	2.00	1	1	100.000
Manual pipettes (1–10 mL)	g	114.81	1.00	10	4500	0.026
Pipettes caps (1–10 mL)	g	5.85	0.10	1	1	0.585
Water (for cap washing)	g	5	1.00	1	1	5.000
Electricity	kWh	0.059	1.00	n.a.	1	0.059
Output
Plastic waste	g	17.1	n.a.	n.a.	n.a.	n.a.
Chemical waste	g	240	n.a.	n.a.	n.a.	n.a.

††Quantity × allocation factor/no. of analyses.