Dionic HT No.2 is a blend of calcium and chloride salts, used in conjunction with Dionic AT No.1, to adjust the ionic composition of brewing liquor.
-Ensures correct balance of calcium and chloride ions
The underlying principle of two part Dionic treatments is that one solution contains the calcium required and the other contains the sulphate. Provided they are added to the hot liquor tank separately they remain ionised and in solution.
Consequently the brewer is treating his liquor with calcium sulphate (gypsum) in solution, and a lot of the problems of sludge in the hot liquor tank are overcome. The remaining constituents that form the required balance of liquor treatment are divided between the two solutions.
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(a) How much of the product to add
The product should be added at rates recommended by the laboratory at Murphy & Son Ltd. and will be dependent upon the raw liquor composition.
Regular checks of the raw liquor should be made to ensure that the correct dosage is used.
(b) Where to add the product
Dionics may be added either to cold or hot liquor tank. On no account should the two solutions be mixed together prior to addition, as this would result in the deposition of calcium sulphate and nullify the advantages of the Dionic system. The order of addition of A.T. No. 1 or H.T. No. 2 is unimportant, the turbulence caused by the flow of incoming liquor being sufficient to disperse the treatments.
Standing time before mashing becomes unnecessary, but when acids are incorporated to neutralise excess carbonate alkalinity, the free carbon dioxide gas liberated should be removed by rousing.
Additions should not start until the liquor tank is at least two-thirds filled to prevent too high a concentration of the solutions being present in too small a quantity of liquor. Under those circumstances some precipitation might occur.
Dionic HT No. 2 (25kg)