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. 2015 Jul 1;12(8):509–517. doi: 10.1080/15459624.2015.1018518

Figure 1. Particle penetration vs. UVGI exposure for respirator material. (A) 3M 1860; (B) 3M 9210; (C) GE 1730; (D) KC 46727. Each pair of bars shows the mean penetration for four 37 mm test coupons before and after UVGI exposure. Error bars show the standard deviation.

Figure 1