ProcedureFill the viscometer, previously washed and completely dried, with the liquid under examination through tube L to slightly above the mark G, using a long pipette to minimise wetting the tube above the mark. Place the tube vertically in a water-bath maintained at the temperature indicated in the monograph and allow to stand for not less than 30 minutes to allow the temperature to reach equilibrium.
Method B: (Using the Suspended-level Viscometer)
ProcedureFill the viscometer through tube L with a sufficient quantity of the liquid under examination to ensure that bulb A is satisfactorily filled without blocking the ventilation tube M.
Method C: (Using the Rotating Viscometer)
ProcedureOperate the Rotating Viscometer in accordance with the manufacturer's instructions and carry out the determination of viscosity of the liquid under examination, at the temperature and angular velocity or shear rate specified in the individual monograph.
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