If the reduction from 10 per cent glycerin to pure glycerin is accomplished in less than 24 hours, the change in the concentration is so rapid that material is likely to suffer. Wash out the glycerin with 95 per cent alcohol. It will be necessary to change the alcohol several times. From 10 to 20 minutes will be sufficient if the alcohol is changed frequently. This alcohol cannot be used again for the same purpose, but it will be useful in cleaning one's hands and in cleaning dishes which have contained Venetian turpentine.
Most failures are now ready to occur.