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ZETOLITE 65 is a blend of naturally occurring volcanic material and zinc salts, formulated to prevent the occurrence of sulphidic favours in fermented beverages
It is well known in the brewing world that zinc and copper are required by yeast in trace amounts for cell growth, respiration and reproduction. They enjoy better viability and vitality when these compounds are present in the nutritional mix presented to the yeast.
Murphy & Son Ltd in conjunction with the Zetol Cooperation have developed a product called Zetolite that can be added to wort at the start of fermentation or to beer at the start of maturation to assist in the healthy growth of yeast and in particular to either prevent or reduce the incidence of sulphidic compounds such as hydrogen sulphide or dimethyl sulphide.
Zetolite consists of an aluminosilicate carrier, commonly called zeolite, which is impregnated with either zinc or copper ions. It is a pale pink/red or dark grey powder and is dosed at low levels.
The product should be slurried with a small amount of water or the wort to which it is to be added. It should ve added to the fermenter as the start of fermentation.
Rates of Use
The product should be added at a rate of between 0.25 and 1 gm per hectolitre of wort. It is recommended to use the higher
rate if a high amount of sulphidic compounds are experienced in the product.