Through the ages civilisation has disguised offensive odours by masking them with a perfume. However, through modern science, we now understand that offensive odours can be quite toxic, and even low levels in the order of parts per million (ppm) can adversely affect health and the environment.

This fact is underlined by recent deaths in New Zealand from Hydrogen Sulphide gas derived from the natural geothermal activity in and around Rotorua. Hydrogen Sulphide is also one of the noxious gases given off by human sewage during normal decomposition.

However, there is an almost endless variety of toxic odours affecting our environment, most of which are a by-product of our modern industrial society. These odours, whether offensive, toxic, or both, need to be successfully neutralised rather than just covered up. To this end, our extensive range of "AIR REPAIR" products will often have a fragrance added to make any residual, but harmless low level odours, less noticeable to the end user. Creature comfort and safety is the continual aim in the development of our products and services.

CONVERTING NASTY SMELLS TO MORE FRIENDLY FORMS

How then do "AIR REPAIR" products convert toxic and offensive odours into safe and non-offensive molecules? This is achieved by the fact that all "AIR REPAIR" products have reactive groups available which readily react with the various toxic odours. By this means, new molecules are formed which do not have the toxicity and odour of the previous offensive ones. Chemically, there are three main groups of offensive and toxic odours:
1. Acidic odours. 2. Alkaline odours. 3. Neutral odours.

ACIDIC TOXIC ODOURS

Typically each "AIR REPAIR" product is composed of a specially built amphoteric surface- active agent, organic food acid, Amine and an organic salt. The conversion of Hydrogen Sulphide demonstrates this process with acidic toxic odours, as shown in this equation. + H2S (HYDROGEN SULPHIDE) + AIR REPAIR = RNH3SH (AMINE-BISULPHIDE SALT)

ALKALINE TOXIC ODOURS

Alkaline odours cover such smells as Skatole (the odour of faeces), Ammonia, Butylamine and other noxious Amines. These noxious Amines react with the amphoteric and organic acids in our product and are by this means neutralised of their offensive and toxic potential, as shown in this equation. NH3 (AMMONIA) + AIR REPAIR = CH3COONH4 (AMINE SALT) or RCH2COONH4

NEUTRAL TOXIC ODOURS

Our special expertise makes Odour Control Systems Ltd competent to deal with these difficult substances. We have developed highly sophisticated chemical systems incorporating organic ionic diopolar compounds, which when joined with special surface active agents make "AIR REPAIR" uniquely effective in dealing with the types of neutral compounds often found in fish and dairy waste. A typical reaction may be written,

GH3SCH3 + AIR REPAIR = ADSORPTION PRODUCT (NON VOLATILE)

It is wise to discuss your particular toxic gas or offensive odour problem with one of our technical staff, as they have experience both in the most effective type of "AIR REPAIR" product, and to use the most cost-effective manner to apply it in particular situations.

Odour Control Systems Internatioanl Ltd is committed to on-going research and development to improve our products and application methedology as well as researching other technologies to ensure we are always the odour control industry leaders.

We are committed to a safer environment for humans, wildlife and the flora and fauna around us.

Visit the "AIR REPAIR" PRODUCT RANGE to establish the correct product to solve your odour control problem.