QCI-004 Operation of Viscosity Cup

• PURPOSE

• To define a procedure for operation of the Ford B4 Viscosity Cup.

• SCOPE

• This SOP applies to the Quality Control Department.

• REFERENCE(S) & ATTACHMENTS

• References:

  • In-house.

• Attachments:

  • Nil.

• RESPONSIBILITY

• QC Department Head:

  • To prepare the SOP.

  • To confirm the content, correctness, and detailing of the SOP.

• QA Head:

  • To approve the new or revised SOP.

  • To ensure implementation of the defined system.

• DISTRIBUTION

• Quality Assurance.

• Quality Control.

• DEFINITION(S) & ABBREVIATION(S)

• Definitions:

  • Viscosity: the property of a fluid that resists the force tending to cause the fluid to flow. It is the measure of the extent to which a fluid possesses this property.

  • Ford Viscosity Cup: a simple gravity device that permits the timed flow of a known volume of liquid passing through an orifice located at the bottom.

• Abbreviations:

  • Nil.

• PROCEDURE

• Mount the B-4 Ford Cup on the retort stand.

• Place a glass beaker underneath the B-4 Ford Cup.

• Hold a finger at the bottom of the B-4 Ford Cup to prevent flow out.

• Pour the solvent/liquid/solution into the B-4 Ford Cup till it overflows into the outer cavity of the cup.

• Keep a stopwatch ready in the 00.00 position before starting the flow.

• Remove the finger to allow the solvent/liquid/solution to flow out, and simultaneously start the stopwatch.

• Record the time taken, in seconds, for the first break in the flow.

• The reading represents viscosity in "seconds".

• REVISION HISTORY

+----------------+----------------+----------------+----------------+----------------+----------------+ | Revision No. | 00 | Effective | | CC No. | | | | | Date | | | | +----------------+----------------+----------------+----------------+----------------+----------------+ | Details of revision: New SOP | +-----------------------------------------------------------------------------------------------------+