|
|
Availability of Test Strips
|
Monitoring Device: Oxidation Reduction Potential (ORP)
Meters
|
|
Requires Micro Verification
|
pH Range of Water During Treatment
|
Concentration Recommended
|
Effectiveness in the Presence of Organic Matter
|
|
|
Treatment Speed of Large Volumes of Water
|
|
|
|
Chlorine (Food Grade)
|
Yes
|
Works well
|
Yes
|
Yes
|
6.5 - 7.5
|
50 - 300 ppm
|
Limited
|
Medium:Irritant to skin, eyes and throat
|
Medium
|
Fast
|
1 X
|
Odour. Continues to be some disposal concerns.
|
|
Chlorine Dioxide
|
Yes
|
Works well
|
Yes
|
Yes
|
6 - 10
|
5 ppm
|
Effective
|
High: Irritant to skin, eyes and throat
|
Medium/High
|
Fast
|
15 X
|
Most demanding form of Chlorine - must produce
onsite. Odour.
|
|
Hydrogen Peroxide
|
Yes
|
Challenging
|
Yes
|
Yes
|
6 - 8
|
3%
|
Effective
|
Medium:Irritant to skin, eyes and throat
|
Low
|
Medium
|
90 X
|
Need to acidify to pH 6.
|
|
Peroxyacetic Acid
|
Yes
|
Challenging
|
Yes
|
Yes
|
< 4
|
50 - 80 ppm
|
Effective
|
High: Severe irritant to skin, eyes and throat.
Requires ventilated area
|
Medium
|
Medium/Fast
|
5 X
|
Not ideal for sensitive produce. pH may need to
be increased prior to disposal. Very strong odour.
|
|
UV
|
No
|
Not suitable
|
Yes**
|
Yes
|
NA
|
NA
|
Not Effictive (must filter)
|
Low
|
Low
|
Slow
|
Varies based on facility
|
Ensure bulb is functional and clear of mineral
deposits. Challenges with hard water.
|
|
Ozone
|
No
|
Challenging
|
Yes
|
Yes
|
6 - 8
|
3 ppm
|
Limited
(must filter)
|
Medium: Must have off-destruct device and detector(s)
|
Low
|
Slow
|
Varies based on facility
|
Fast oxidizer, however, delivery system reduces
speed of large water volume sanitation.
|
