Material disinfection

All the material must be carefully cleaned and disinfected before use. This sanitization is generally carried out by means of a sulfur dioxide solution (SO2). It can be readily prepared by dissolving 10-20 g (1-2 tablespoons) sodium metabisulfite (Na2S2O5) in 10 litres water, plus a teaspoon citric acid. This acid will liberate the SO2 from metabisulfite. Only the free SO2 can act as a disinfectant.

Soak all the material (as well as the fruits) in this solution for at least 15-30 minutes. Clean the voluminous material with a cloth permeated with this solution, letting it flow into the unattainable places (slits). The material will then be only drained off, while the fruits will be rinsed with clean water.


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