FIELD: chemistry.
SUBSTANCE: invention relates to method of conserving water preparation of calcium compounds, which includes the following stages: (a) obtaining water preparation of at least one calcium compound; (b) addition to water preparation of stage a) of one or more sources of lithium ions in such quantity that the total quantity of lithium ions in water preparation constitutes from 750 to less than 3000 per mille , calculated relative to water in preparation; (c) addition to water preparation of stage a) of one or more sources of sodium ions and/or potassium ions in such quantity that the total quantity of sodium and/or potassium ions in water preparation constitutes from 3000 to less than 7500 per mille, calculated relative to water in preparation, where stages (b) and (c) can be performed simultaneously or separately in any order.
EFFECT: method improvement.
23 cl, 2 ex
