UFC 3-240-13FN
25 May 2005
Table 4-7. Guidelines for Non-Oxidizing Microbiocide Selection
Bacteria
Slime Forming
Microbiocide
Comments
Iron
Corrosive
Spore
Non-Spore
Depositing
Formers
Formers
Quaternary ammonium salts
Effective pH 6.5-9.2; foaming potential;
E
E
E
G
P
G
reacts with anionics
Effective pH 6.5-9.2; foaming potential;
Organo tin plus quaternaries
E
E
E
G
P
G
reacts with anionics; tin compounds often
restricted
Dibromo-nitrilo-propionamide
Effective pH 6.5-7.5; degrades quickly;
E
E
E
G
N
P
uses glycol solvent
Methylene bis thiocynate
Effective pH < 7.5; deactivated with high
E
E
G
E
P
P
pH
Isothiazolone
E
E
G
G
G
G
Effective pH 4.5-9.3; dangerous to humans
Dodecylguanidine
E
E
G
G
G
G
Effective pH 6.5-9.5
Glutaraldehyde
E
E
G
E
G
G
Effective pH 6-10
Very effective algaecide; blocks
Terbutylazine
N
N
N
N
N
E
photosynthesis
Carbamates
E
E
G
G
G
F
Eff. pH 7-9; corrodes copper
E = Excellent
G = Good
F = Fair
P = Poor
N = Not effective
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