Lovibond EC 3000 ASTM, Инструкция оператора, Страница: 27 / 39

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EC 3000 Technical Data - ASTM:
Sometime referred to as the " mineral oil color value ", the ASTM Colour
Scale is widely used for the grading of petroleum products such as
lubricating oils, heating oils and diesel fuel oils.
Mineral oils are constantly checked for colour during processing in order
to establish when they have been refined to the required grade. Colour is
also used as a means of confirming that the correct oil or fuel is being
used for its intended use and that no contamination or degradation of
quality has occurred.
ASTM D1500 is a single number, one dimensional, colour scale ranging
from a pale straw through to a deep red in sixteen steps (0.5 - 8.0 units in
increments of 0.5 units). Visual Comparators can achieve a resolution of
0.5 units, the EC 3000 instruments achieve a resolution of 0.1.
To comply with specifications, a 33 mm path length must be used.
ASTM D1500 superseded the 12-step D155 NPA (National Petroleum
Association) scale in 1960.
Other petroleum products that do not fall within the scope of ASTM
D1500 such as undyed gasoline, white spirit, petroleum wax and kerosene
may be graded using the Saybolt test ASTM D156 or IP (Institute of
Petroleum) 17.
Please note the Chinese Industrial Standard SH/T 0168 (0 to 25) is directly
related to ASTM D1500 (0 to 8.0).
Guaranteed Agreement with International Standards; for many product
types, a characteristic set of standards was agreed and adopted to aid
colour control and the communication of colour specifications worldwide;