To prepare labels used for the carded or other purposes the following plan is to be highly recommended as certain to preserve the wood. The first step is to soak the pieces of wood for a whole day in a solution of copperas (sulphate of iron). After this, put the wood at one side to dry. Then place in lime water for 24 hours. The outcome of this treatment is the formation in the wood of sulphate of lime (gypsum) a salt that is highly insoluble. This impregnates the wood to such an extent that a rapid destruction of the labels iB impossible. Thin wood treated in Jhis manner has been fully exposed to the weather for two years without showing the least change,
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Bibliographic details
New Zealand Herald, Volume LV, Issue 13967, 28 September 1918, Page 3 (Supplement)
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124Page 3 Advertisements Column 1 New Zealand Herald, Volume LV, Issue 13967, 28 September 1918, Page 3 (Supplement)
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