Figure 12: Effect on zero baseline							
							
temperature of LED	temp of filter	concentration / ppm	detection channel	reference channel	S / AU	conc equivalent / ppm	error / ppm
							
20°C	10	0	1.82E+04	7.06E+03	-2.26E-02	-1.91E+03	-1.91E+03
20°C	15	0	1.81E+04	7.13E+03	-5.94E-03	-5.02E+02	-5.02E+02
20°C	20	0	1.80E+04	7.16E+03	0.00E+00	0.00E+00	0.00E+00
20°C	25	0	1.80E+04	7.18E+03	6.41E-03	5.42E+02	5.42E+02
20°C	30	0	1.79E+04	7.26E+03	2.25E-02	1.90E+03	1.90E+03