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Iso standard 4021
| Oil glossary |
The accepted procedure for extracting samples from dynamic fluid lines.
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Iso viscosity grade, английский
A number indicating the nominal viscosity of an industrial fluid lubricant at 40 degrees c (104 degrees f) as defined by astm standard viscosity system for industrial fluid lubricants d 2422. essentially identical to iso standard 3448.
Iso solid contaminant code (iso 4406), английский
A code assigned on the basis of the number of particles per unit volume greater than 5 and 15 micrometers in size. range numbers identify each increment in the particle population throughout the spectrum of levels.
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