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Table 1 Results of product eco-friendliness test for various selected brand

From: Materials and manufacturing environmental sustainability evaluation of apparel product: knitted T-shirt case study

Branded T-shirt

Results of formaldehyde test (in ppm).

(Detection limit: 16 ppm)

(Maximum limit: 75 ppm)

pH value test

(Maximum limit: 4.0–7.5 ppm)

Results of analysis of amines in azo dyestuffs (in ppm)

(Detection limit: 10 ppm)

Results of alkylphenol ethoxylate (APEO) content test in ppm

(Detection limit: 30 ppm)

(Maximum limit: 100 ppm)

Brand A

11.42

6.4

Not detected

Not detected

Brand B

20.47

5.7

Not detected

Not detected

Brand C

17.82

6.2

Not detected

Not detected

Brand D

32.45

5.5

13.5

Not detected

Brand E

46.23

7.4

31.7

47.6

Brand F

62.35

7.5

43.2

64.3

  1. Various test methods—formaldehyde test method: International Standard ISO 14184–1: 2011 (for textile and non-woven); pH value test method: ISO 3071:2006 extraction with potassium chloride (for textiles); analysis of amines in azo dyestuff test method: European Standard EN 14362–3: 2012. (for textile); alkylphenol ethoxylate (APEO) content test method: methanol extraction and analysis of by liquid chromatograph mass spectrometer (LC-MS) (for textile)