SOP for Operation and Maintenance of Lovibond Tintometer

OBJECTIVE

To provide a procedure for the Operation & Maintenance of the Lovibond Tintometer.

SCOPE

To establish a procedure for an operation of the Lovibond Tintometer.

RESPONSIBILITY

QC Designee: Responsible for the operation of the instrument.

Section In-charge: Responsible for reviewing the procedure

QC Head: Responsible for implementing the procedure.

QA Head: Overall compliance.

PROCEDURE

Operation

• Plug in the Lovibond Benchtop illumination system and switch it on and wait for 10 minutes to warm-up the lamp.
• Fix the Lovibond Nessler 2150 and insert the colour standard disc chosen among NSH, NSB, and NSX based on the color comparison.
• Fill one Nessler cylinder to just above the 50 ml mark with the solution under examination and fit the anti-meniscus plunger.
• Stand the cylinder in the right-hand compartment of the Nessleriser.
• Fill another in the same way with deionized water and place in the left-hand compartment
• Rotate the disc until the closet color match is obtained, if necessary estimate between the nearest values.
• Record the value displayed as APHA or Hazen units

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Use Lovibond Nessleriser 2250 for Disc CAA & CAB

• Fill one Nessler cylinder to just above the 250 mm. mark with the solution under examination and fit the anti-meniscus plunger.
• Stand the cylinder in the right-hand compartment of the Nessleriser
• Fill another in the same way with deionized water and place it in the left-hand compartment.

• Rotate the disc until the closet color match is obtained, if necessary estimate between the nearest values.
• Record the value displayed as APHA or Hazen units

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

• Fill a 40 mm. cell to the 20ml line with the sample and place it in the right-hand compartment of the comparator. Leave the left-hand compartment empty.
• Rotate the disc until the closet colour match is obtained, if necessary estimate between the nearest values.
• Record the value displayed as APHA or Hazen units

Maintenance

• To avoid excessive heating, do not leave the lamp turned on for longer than the duration of the measurement.
• Always avoid touching the lamp as this can significantly reduce the life of the lamp
• The glass filter can be cleaned using soapy water and then rinsed.
• Clean the cells every time after use

Frequency: As and when required.

ANNEXURE

Nil

REVISION HISTORY

Nil

ALSO READ: SOP for Operation and Cleaning of COD Digester