BTC Products & Services CC 
P.O. Box 1611 
South Africa 
Tel: +27(0)11 794 9239 
Fax: +27(0)11 794 9027 

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:: Chlorine Dioxide - Harvest Wash WT ::

Our product Harvest Wash is based on Chlorine Dioxide technology and we hasten to add that Harvest Wash is not another form of Chlorine. Chlorine Dioxide is totally dissimilar to Chlorine as its major properties will show:-

  1. It does not have any pH limitations.
  2. Its disinfectant (sterilisation) capabilities are minimally diminished in the presence of soils and organics.
  3. It is strongly soluble in water, therefore, it has a long-lasting residual which reduces the potential for cross infection or re-contamination.
  4. It is a broad spectrum, fast acting disinfectant, effective against a wide range of bacteria, spores, fungi, and viruses at relatively low concentrations and short contact periods.
  5. It is colourless, has a mild medicinal odour, low corrosivity to metals and the lowest acute toxicity rating from the EPA.
  6. Does not add taste taint or odour to the produce.
  7. Its residual is easily monitored for effective control with a testkit.
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Efficacy Studies
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Applications And Dosages

Produce Washing ::
Drench Washing
Washing of the produce is undertaken in baths. This wash water is responsible for removing mainly soils off the produce. Hence microbial loading of the water increases, thereby offering a contamination vector of the other produce. It is therefor essential to treat this wash water with a disinfectant in order to improve and control the microbial quality of the water. In this way, one is able to offer some surface microbial reduction on the produce, thereby extending the shelf-life.

Dosage: 1 - 2 Litres Harvest Wash Wt Per 1000 Litres Of Water.
  1. Washing of Citrus
  2. Washing of Deciduous fruit
  3. Washing of Subtropical fruit
  4. Washing of Fresh cut Vegetables
Hydrocooling Of Produce ::
Harvest Wash has been successfully used in the hydrocooling of fresh fruit and vegetables as it can inactivate microorganisms at refrigeration temperatures. We have found that not only do we help keep produce free fungal contamination but the copper coils are also kept clean during the cooling cycles as well. The prevention of biofilm buildup in the copper coils allows for better heat exchange and therefore more efficient cooling.

Initial Dosage: 1 Litre Harvest Wash Wt Per 1000 Litres Of Water
Residual Maintenance: 5-10 PPM.

Sanitation Of Hard Surfaces And Coldrooms ::
Sanitation of cutting equipment and surfaces is often overlooked and can be the source of major contamination. Cold rooms can be fogged at the above dosage rate for effective sanitation to reduce the chances of cross contamination.

Dosage: 1 Litre Harvest Wash Wt Per 100 Litres Of Water

Environmental Fogging ::
Harvest Wash WT can be fogged into a cold room with produce in for control and reduction of spores that may be transmitted via the surrounding atmosphere.

Dosage: 1 Litreharvest Wash Wt Per 100 Litres Of Water

Make Up Procedure
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Material Safety Data Sheet
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We have the following test procedures to accurately measure the residual for effective control:
Titration test kit.

When it comes to HACCP and GMPs your process water is a major critical control point with its own critical limits set for it. One of your critical limits is the residual of your disinfectant in the process water, therefor it is important to define, check and maintain the residual of your disinfectant in your wash water.

We believe that the technology package we can offer the suppliers of fresh and prepared produce will not only overcome some of the problems associated with using of chlorine based disinfectants but it will also increase the shelf-life and quality of the produce on their shelves.

Efficacy Studies ::

E.coli 0157:H7

Acid tolerant, heat resistant, stress related and mutant microbe are all descriptions that have been given to E. coli O157:H7. Recently this organism emerged as a widely recognized pathogen among producers, processors, and consumers. Rightly so, since this pathogen has been the cause of the nation's (United States) largest single product recall and many illnesses, (including death), but the question still comes back to "What can we do about it?"

While several discussions have centered around irradiation and specific test methods, it is very important to realize that there are no silver bullets available. Even facilities using acceptable sanitation procedures are not immune to the possibility of pathogens. It is in this regard that a new look at sanitizing should be considered, primarily that of common bleach or sodium hypochlorite.

Several recent published studies have shown some support that E.coli O157:H7 demonstrates the ability to be acid tolerant and heat resistant. There has even been some talk of this particular pathogen having a "natural" resistance to chlorine. While these traits may be open for debate among recognized experts, some recent lab work has confirmed what many have known for years.

Concentrations Of Various Disinfectants
Resulting In A 5 Log Reduction In Viable Cell Counts Of E. Coli 0157:H7 In 1 Minute
Hypochlorite 600 ppm
Peracetic 15-20 ppm
Acid Ionic 60-90 ppm
Stabilised CLO2 - Harvest Wash 3 ppm

Performed at the University of Oklahoma following AOAC methodology.

Summary Of Antimicrobial And Viral Efficacy Studies

::  Summary Of Antimicrobial... Zipped Worddownload...(33kb)
::  Summary Of Antimicrobial... Zipped PDFdownload...(30kb)


:: Infomation Board ::

Biofilm & Biofouling Manual is now available on our web page. Go to "Downloads" for all the information on Biofirlms & biofouling you need but were afraid to ask.

SABS 1853 approved for RTU-Oxine WT.

:: Contact Details ::












+27 82 331 9720

+27 82 853 5201

+27 82 964 0708

086 610 7205


P.O. Box 1611
2125, ZA

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