Skip to main content
. Author manuscript; available in PMC: 2020 Nov 1.
Published in final edited form as: J Appl Microbiol. 2019 Aug 19;127(5):1315–1326. doi: 10.1111/jam.14406

Figure 2. Wipe sampling method optimization for different types of material.

Figure 2.

Data are reported as the arithmetic mean of recovered PFU ± 1 standard deviation; spiked concentration of MS2 levels: high-surface loading (A) at 1 × 108 PFU per coupon and medium-surface loading (B) at 1 × 105 PFU per coupon. Testing was performed on 35.56 cm × 35.56 cm coupons and five types of materials: stainless steel (SS [nonporous reference material]), non-grimed concrete (NGC), grimed concrete (GC), non-grimed plywood (NGP), and grimed plywood (GP). Wipe samples were sampled, extracted, and analyzed on the day of the experiment (CT <10 min, HT <8 h).