Page 63 - Microsoft Word -Cow Book 10-06-09 final update.doc

SANITIZERS

Hypochlorite 50 ppm Limitations - unreliable in Test kits available -
1 minute presence of large litmus paper type.
Readily affected by
amounts of milk residue.
Calcium or sodium
hypochlorite in powder or When used in spray form organic in solution.
solution. doubling strength is
recommended.

Organic 200 ppm - 7.2 pH Limitations - Significantly Test kits available. Chlo-
ramine T is limited to low
affected by pH
Chlorine 100 ppm - 6.8 pH (Trichloromelamine may pH situations.
Compounds 50 ppm - 6.4 pH not be used to sanitize
milk surfaces)

Quaternary 200 ppm, Limitations - affected by Test kits available. Less
affected by organics in
interfering substances in
Ammonium 30 seconds, the water. (Extremely hard the solution. Stability is
Compounds at pH level >5.0, water will reduce effective- more than the cl2
o
sanitizer.
ness significantly). Affect-
o
at 24 C(75 F) or
higher ed by Ph and temperature
of solution.
n-alkyl, dimethyl, and
ethylbenzyl benzyl
ammonium chlorides,.

Iodine com- 12.5 ppm, Limitations - Colorations Test kits available.
may appear on equip-
Strength is relative to
pounds temperatures up ment. color of solution
o
o
to 49 C(120 F), Iodophors are yellow or
amber and the intensity is
1 minute,
a halogen sanitizer proportional to the concen-
combining iodine and teat dips are used tration.
non-ionic substances at over 2500 ppm

HEAT n/a
STEAM Exposure for 5 Limitations-availability,
economics, exposure
minutes after times, practicality.
o
reaching 200 F same

HOT WATER
Exposure for 5
o
minutes at 170 F

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