Viscosity

1.0 PURPOSE

1.1 To define a test method for determination of the viscosity of all liquids (Ink / Toner / Adhesive / Hardener / VMCH / Foil Wash / OPV, etc.).

2.0 SCOPE

2.1 This STM applies to the Quality Control department.

3.0 REFERENCE(S) & ATTACHMENTS

3.1 References

3.1.1 In-house

3.2 Attachments

3.2.1 Nil

4.0 RESPONSIBILITY

4.1 QC Department Person:

4.1.1 To carry out the testing as per the STM.

4.2 QC Department Head:

4.2.1 To prepare and ensure the implementation of the STM.

4.3 QA Head:

4.3.1 To approve the new or revised STM, and to ensure the implementation of the defined system.

5.0 DISTRIBUTION

5.1 Quality Assurance

5.2 Quality Control

6.0 DEFINITION(S) & ABBREVIATION(S)

6.1 Definitions

6.1.1 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.

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

6.2 Abbreviations: Nil

7.0 PROCEDURE

7.1 Mount the B-4/B-6 Ford Cup on the Retort Stand.

7.2 Place a glass beaker underneath the B-4/B-6 Ford Cup.

7.3 Hold the finger at the bottom of the B-4/B-6 Ford Cup to prevent flow out.

7.4 Pour solvent / liquid / solution into the B-4/B-6 Ford Cup until it overflows into the outer cavity of the cup.

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

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

7.7 Record the time taken in seconds for the first break in the flow.

7.8 The reading represents viscosity in "Seconds".

8.0 REVISION HISTORY

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