SOP For calibration of refractometer is described in this post which you can follow in the section of the General Industry SOP.

Objective

To calibrate the equipment for confirmation of reliable and accurate results.

Scope

This procedure is applicable to calibrate the refractometer, installed in the quality control department.

Responsibility

QC Analyst

Accountability

Manager Quality Control

Procedure

  • Operate the instrument.
  • Maintain the required temperature of the particular liquid.
  • Observe and record refractive index of the different liquid at temperature.
  • The performance of the instrument is satisfactory if the observed refractive index is within the limits. 

Frequency: Once in three months.