ASTM D1343 95 2019 Standard Test Method for Viscosity
1.3 In commercial practice, viscosities are often expressed in seconds using 2.38-mm (3 / 32-in.) stainless steel balls. 2 When the viscosity is outside the practical range for these balls (75 to 300 P), the measurement can be made using a calibrated pipet viscometer or a different ball and calculating the observed viscosity to the ...
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