Table 1.

Lightness variation of the electrodes of different lots after 30 washes.

	M1	M2	M3	M4	S1	S2	S3	S4
Yarn A	−11.9%	−3.2%	5.6%	−39.0%	−5.5%	−2.2%	−1.1%	−3.1%
Yarn B	−16.4%	11.1%	9.8%	−38.0%	−3.2%	0.8%	−1.6%	−1.8%
Yarn C	−15.6%	−7.6%	−5.9%	−30.0%	−6.7%	0.5%	1.0%	−1.7%