Evaluation of Handheld Assays for the Detection of Ricin and Staphylococcal Enterotoxin B in Disinfected Waters

Table 1

LODs^a or ricin and SEB in multiple water matrices using handheld assays.

	Manufacturer 1		Manufacturer 2
	1-line	2-line	1-line	2-line	2-dot
Ricin LODs
Tap	1.1	7.1	1.2	1.3	5.9
Tap + Cl	1.8	16.7	1.0	1.3	1.3
RO + Cl	3.3	56.9	2.2	2.5	4.9
RO + Br	3000	3000	3000	3000	3000
SEB LODs
Tap	3.1	12.5	0.9	1.1	1.9
Tap + Cl	2500	5000	2500	5000	5000
RO + Cl	2500	10000	2500	5000	5000
RO + Br	2500	5000	2500	5000	5000

^aAll LODs reported are in ng/mL.
Concentrations were tested a minimum of two independent times with a minimum of three handheld assays per concentration.