Table 1 pH and concentration of commercial sanitizers washing for fresh-cut lettuce

Sanitizers1)	Brand name	Ingredients	Solution
			Concentration (%)	pH
			CL	Sodium hypochlorite	Sodium hypochlorite (NaOCl)	0.02	9.7±0.2
F4	Formula 4	(Sulfite free) Citric acid	1.0	2.0±0.3
			3.0	1.8±0.2
			4.0	1.7±0.1
FPW	Fresh produce wash	Sucrose esters, sodium citrate, glycerin	1.0	4.2±0.2
			3.0	4.3±0.2
			4.0	4.4±0.1
CC	Cleancol	Ethyl alcohol. grapefruit seed extract	1.0	5.3±0.3
CT	Chitocol	Chitosan, glycerin, citric acid, ethyl	1.0	2.7±0.2
		alcohol
Ca	Natural calcium	Calcium oxide	0.1	12.0±0.1

DW, distilled water; CL, hypochlorite (NaOCl); CA, citric acid; F4, formular 4^TM; FPW, Fresh produce wash^TM; CC, Cleancol^TM; CT, Chitocol^TM; Ca, calcium oxide.