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SOP for coding and calibration of standard weight

SCOPE: The SOP is applicable for coding and calibration of all the analytical and standard weights in the various department at the plant.

RESPONSIBILITY:

  • QA officer is responsible for coding and calibration of standard weight used in different departments.
  • Head production, engineering, warehouse, and quality control ensure compliance with this standard operating procedure.
  • Head quality assurance is responsible for overall compliance with this SOP.

PRECAUTION:

  • Check the validity of the calibration certificate of standard weight to be used for the calibration.
  • The balance should not if it is out of working range.

FREQUENCY:

  • Calibration of standard analytical weight- annual
  • Calibration of standard weight- annual

PROCEDURE: CODING OF ANALYTICAL STANDARD WEIGHT

calibration of standard weight
  • Make a list of all the analytical balances available at the site.
  • Allocate alphanumeric code to all analytical weight sets as a following:
  • XX/AWB/YY
  • XX- Stand for department code
  • /- slash
  • AWB- Analytical weight box(set)
  • YY- Running serial number for several weight boxes present in departments.

PROCEDURE: For departments, follow these codes:

  • EX- External preparation.
  • LQ- Liquid oral
  • OH- oral hygiene
  • QC- Quality control
  • TB- Tablet
  • WH- warehouse

For example:

  • QC/AWB/01 -Analytical weight set number 1 in quality control
  • QC/AWB/02 – Analytical weight set number 2 in quality control
  • Mark the alphanumeric code to all the analytical weight sets.

Coding of standard weight:

Make a list of all standard weights:

Allocate an alphanumeric number to all the standard weight set as follow:

  • XX/SW/YY
  • XX- Stand for departments code
  • / -slash
  • SW- Standard weight set
  • YY- Running serial number for weight box present in the departments

Allocate an alphanumeric number to all the standard weight set as follow:

  • PP/YY/ZZ
  • P- Standard weight
  • /-slash
  • YY- Is for weight in Kg
  • ZZ- is a serial number of a particular weight( 01.02.03…..)

for example:

  • P/20/01- First 20 kg standard weight
  • P/10/01- First 10 kg standard weight

YEARLY CALIBRATION OF ANALYTICAL STANDARD WEIGHTS:

  • Certification of weight by the electronics test and department center (ETDC), Government of India, or its authorized agency
  • Make a list of the analytical weight box with a weight ID number for sent to ETDC or its authorized agency for calibration.
  • Prepare returnable gate pass and send the analytical weight box to ETDC or its authorized agency for calibration.
  • After the calibration weight is received from ETDC or its authorized agency, check for any damaged and quantity of weights.
  • Ensure that certificate for calibration is received from ETDC or its authorized agency, review the certificate for completeness

TOLERANCE LIMIT: ± 0.1%.

  • Discard the weight falling out the tolerance limit and indent to purchase new weights.

YEARLY CALIBRATION AND STUMPING OF STANDARD WEIGHTS:

  • Intimate the government agency (weight and measure) for calibration of all standard weight.
  • Make a list of the standard weight box to be sent to ETDC or its authorized agency and send it to ETDC for calibration.
  • After the calibration weight is received from ETDC or its authorized agency, check for any damaged and quantity of weights.
  • Ensure that a certificate for calibration is received from ETDC or its authorized agency, review the certificate for completeness and store the calibration certificate of standard weight in the custody of the QA Head).
  • The calibration weight should befall within tolerance limits ± 0.1% .those weights falling out of the tolerance limits of ± 0.1% should be discarded.
  • Discard the weight falling out the tolerance limit and indent to purchase new weights.

Related post: SOP for acceptable quality level

ABBREVIATION:
  • QA – Quality Assurance
  • Kg – Kilogram
  • g – gram
  • IPQA -in-process Quality Control
  • No. -Number
  • pg. -page
  • SOP -Standard operating procedure

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