Preparation And Handling Of Primary Standard

 

1.0  OBJECTIVE:

To establish procedure for preparation and handling of primary standards.

2.0  SCOPE:

This procedure is applicable for primary standards which are to be used for standardization of volumetric solution & calibration of instruments.

3.0  RESPONSIBILITY:

3.1  Doing: Technical Assistant/ Executive.

3.2  Checking: Executive/ Manager.

4.0  ACCOUNTABILITY:

4.1  Head of the Q.C Department.

5.0  PROCEDURE:

5.1  Select A.R. grade of reagent/ chemical preferably certified.

5.2  Distribute the sufficient quantity of the material as required for one time use into predefined no. of vials & record it.

5.3  Give the reference number to primary standard as follows:

X/OO/A/BB

Where,

X corresponds the first alphabet of material.

OO corresponds to Sr. no. from 01 onward to have details of total primary standard in quality control laboratory.

A corresponds the last digit of year in which primary standard is prepared.

BB corresponds the no. of vial prepared for particular primary standard starting from 01.

5.4  Store the material in light resistant glass vials closed with rubber bungs and sealed with aluminium seal.

5.5  Label the vials with the following details:

5.5.1        Name of primary standard.

5.5.2        Ref. No.

5.5.3        Date of preparation.

5.5.4        Use before.

5.6  Store all vials of primary standard in A.C. control area as per Annexure-I.

5.7  For every calibration/ standardization take always fresh and sealed vial of primary standard and record it in respective bin card as per annexure II.

5.8  Destroy the expired vials of primary standard after completion of shelf life and keep the record as per Annexure-II.

6.0  REVISION LOG:

Revision No.

Effective Date

Reason

00

 

New SOP

 

7.0  REFERENCES:

7.1  Not Applicable.

8.0  ANNEXURES:

Annexure 1: LIST OF PRIMARY STANDARD.

Annexure 2: PRIMARY STANDARD BINCARD.

 

 Annexure: 1

LIST OF PRIMARY STANDARDS

Sr.#

Name of primary standard

Ref. No.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Annexure: 2

PRIMARY STANDARD BINCARD

Name of Primary Std.:

Batch No.:

Date of preparation:

Use before:

No. of Vials prepared:

Prepared by:

Sr.#

Vial Ref. No.

Date of issue

No. of Vial issued

Balance quantity

Issued by

Remarks

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No. of vials remaining on expiry:

No. of vials destroyed:

Vials destroyed on:

Vials destroyed by:


9.0  ABBREVIATIONS:

Abbreviation

Expanded Form

S

Standard operating procedure

&

And

%

percentage

 

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