Oil colours and printers' inks [microform] : a practical handbook treating of linseed oil, boiled oil, paints, artists' colours, lampblack and printers' inks, black and coloured (1903)
Andés, Louis Edgar, 1848-1925, Morris, Arthur, Robson, Herbert · London : Scott, Greenwood ; Toronto : Copp, Clark · leaf 48
32 OIL COLOURS AND PRINTERS’ INKS, ment. It is so constructed that with a steam pressure of three atmospheres it will control by suction a water column of 3 to 8 metres and one of 3 to 4 metres by pressure. In fig. 8 an air aspirator is shown fixed to the top of a vat … containing the oil to be bleached. It sucks. through the pipe and a perforated coil, sulphurous acid, which passes through the oil in an extremely finely divided state, till the bleaching is perfect. The vat must of course be closed and
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