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. 2018 Dec 26;9(1):4. doi: 10.3390/bios9010004

Figure 8.

Figure 8

(a) SAW eNose response to 10 ppm of acetone. Experimental response for 5 ppm, 10 ppm and 25 ppm of (b) acetone, (c) ethanol and (d) ammonia with S1, S2, S3, and S4 sensitive layers. (e) Three consecutive measurements for 25 ppm of ammonia.