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English to Italian translations [PRO] Tech/Engineering
English term or phrase:filler heads
4.4.3 A) For flat surfaces swab a 5cmx5cm (25cm2) area. Holding the swab at approximately a 30-degree angle, rotate the head slowly over the sampling surface reversing direction on successive strokes.
B) For other surfaces (i.e. pipework, FILLER HEADS, ‘O-ring’) thoroughly swab a representative area.