Stainless steel, glass, plastic, and wooden plates were cut to 1 cm × 1 cm (coupons). E. coli O157:H7 biofilms were formed on coupons immersed in M9 medium at 22 °C for 5 days, as described above.
Stainless steel, glass, plastic, and woodenplates were cut to 1 cm × 1 cm (coupons). E. coli O157:H7 biofilmswere formed on coupons immersed in M9 medium at 22 °C for5 days, as described above.