Megger OTS60SX Guide De L'utilisateur page 9

run off while taking extreme care to prevent the ingress of
atmospheric dust, cloth fibres or moisture.
Do not use a syphon. In the absence of a useable sample point,
use a 'thief'.
Shield the sample from direct light until ready to be tested.
Turbulence and air bubbles should be avoided when pouring the
oil. Relevant national specifications should be observed.
Particular care to prevent contamination is necessary when a
test is to be made on a bulk delivery tanker, and on all occasions
when a high value of dielectric strength is anticipated. The
procedure suggested above should be rigorously applied.
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