Rinsability of Orthophthalaldehyde from Endoscopes

Table 4

Zones of Inhibition (ZOI) of S. aureus for sections of Viton bending rubber and endoscope insertion tube sections following five 10.0 minute exposures to OPA at 25°C for one day, three 100 mL rinses with water, and overnight drying, and then repeating the exposure, rinsing, and overnight drying for a 2nd day. The numbers reported are the mean ± standard deviation of three replicates in mm.

Endoscope material	OPA @ 25°C
	1 day	2 days
	5 exposures, 3 water rinses, and overnight drying; ZOI (mm)	5 exposures, 3 water rinses, and overnight drying; ZOI (mm)
Viton	0±0	0±0
Insertion tube	22±1	27±2.1