STANDARD OPERATING PROCEDURE LAB EQUIPMENT LOVIBOND TINTOMETER OPERATION AND MAINTENANCE

     STANDARD OPERATING PROCEDURE

SUBJECT :                                             LAB EQUIPMENT LOVIBOND TINTOMETER OPERATION AND MAINTENANCE

DEPARTMENT           : QA SOP NO.                      : Page No                       : Effective Date             : Next Review                : SOP REVISION           :

             

1.0       OBJECTIVE:

To provide guidelines for Operation & Maintenance of Lovibond Tintometer.

2.0        POLICY:  

To establish a procedure for an operation of Lovibond Tintometer.

                                      

3.0       PROCEDURE: 

            Plug in the Lovibond Bench top illumination system and switch on and wait for 10 minutes to

             warm-up the lamp.

3.1       Fix the Lovibond Nessler 2150 and insert the colour standard disc chooses among NSH, NSB, NSX based on the colour comparison.

3.1.1.   Fill one Nessler cylinder to just above the 50 ml. mark with the solution under examination and fit the anti-meniscus plunger.

3.1.2.   Stand the cylinder in the right hand compartment of the Nessleriser.

3.1.3.   Fill another in the same way with deionized water and place in the left hand compartment

           

3.1.4.   Rotate the disc until the closet colour match is obtained, if necessary estimate between the nearest values.

3.1.5.   Record the value displayed as APHA or Hazen units

3.2       Use Lovibond Nessleriser 2250 for Disc CAA & CAB.

3.2.1    Fill one Nessler cylinder to just above the 250 mm. mark with the solution under examination and fit the anti-meniscus plunger.

3.2.2    Stand the cylinder in the right hand compartment of the Nessleriser

3.2.3    Fill another in the same way with deionized water and place in the left hand compartment.

      

3.2.4    Rotate the disc until the closet colour match is obtained, if necessary estimate between the nearest values.

3.2.5    Record the value displayed as APHA or Hazen units

3.3       For Disc 4/28 and 4/28A Use Lovibond Daylight 2000+ Comparator

3.3.1    Fill a 40 mm. cell to the 20ml line with sample and place in the right hand compartment of the comparator. Leave the left hand compartment empty.

3.3.2    Rotate the disc until the closet colour match is obtained, if necessary estimate between the nearest values.

3.3.3    Record the value displayed as APHA or Hazen units

3.4        PREVENTIVE MAINTENANCE PROCEDURES:

3.4.1        To avoid excessive heating, do not leave the lamp turned on for longer than the duration of the 

measurement. 

3.4.2        Always avoid touching the lamp as this can significantly reduce the life of the lamp

3.4.3        The glass filter can be cleaned using soapy water then rinsed.

3.4.4        Clean the cells every time after use

4.0       FREQUENCY: As and when required.

5.0       RESPONSIBILITY:   Q.A Executive.

6.0       REVIEW GUIDE: -------

7.0       ANNEXURE: -------

8.0       SOPs DISTRIBUTION:

            This SOP shall be distributed to following Departments:

Name of the Department	Master Copy	Circulatory Copy
QA/QC	√	√
Production	x	x
Warehouse	x	x
General	x	x
Maintenance	x	x