ASTM D2162 Test Method for Basic Calibration of Master Viscometers and Viscosity Oil Standards
1. Scope
1.1 This test method covers the calibration of master viscometers and viscosity oil standards, both of which may be used to calibrate routine viscometers as described in Test Method D445 and Specifications D446 over the temperature range from 15 to 100°C.
1.2 The calibration constants in mm2/s2 are to be regarded as the standard. The kinematic viscosities in mm2/s are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements see Section 7.
2. Referenced Documents
2.1 ASTM Standards:
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and the Calculation of Dynamic Viscosity)
D446 Specifications and Operating Instructions for Glass Capillary Kinematic Viscometers
D1193 Specification for Reagent Water
D1250 Guide for Petroleum Measurement Tables
D1480 Test Method for Density and Relative Density (Specific Gravity) of Viscous Materials by Bingham Pycnometer
D1590 Test Methods for Surface Tension of Water and Waste Water
E 1 Specification for ASTM Thermometers
2.2 ISO Standard:
ISO 3666 Viscosity of Water
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 basic calibration, n - calibration based on the primary standard, water.
3.1.1.1 Discussion - Pure water has a kinematic viscosity of 1.0034 mm2/s (cSt) at 20°C. See ISO 3666.
3.1.2 master viscometer, n - glass capillary viscometer with a liquid driving head of at least 400 mm.
3.1.2.1 Discussion - It is specially designed to minimize errors due to surface tension, kinetic energy, and capillary end effects.
3.1.3 viscosity oil standard, n - stable Newtonian liquid, the kinematic viscosity of which has been related to the kinematic viscosity of water through the step-up procedure described in this test method.
