Tests

Experiments on 18 Cooling Towers

Sample water was taken both from the make-up valve (tap water) and from the pan or base of the 18 towers. 11 of the towers had Algarid fitted to the circulating system and in most cases to the make-up water as well. The size of the towers varied and their applications varied from air-conditioning to industrial use i.e. plastic molding machines and multiple use towers such as the ones at Commonwealth Serum Laboratories where each of the towers had multiple circuits working from a single tower.

Summary of Bacteria Counts - 18 Towers Tested

When you average the bacteria count of the 11 Algarid treated towers, you have a figure of 391,290. The average of the 7 chemically treated towers was 2,911,657.

A factor of 7.4 times less bacteria than in the chemically treated towers.

However, if you average the count from the 4 Algarid treated towers with bleed-off, you get 43,675 against the chemically treated towers 2,911,675.

A factor of 66.6 times less bacteria than in the chemically treated towers.