Quality System Procedure: (PTL/QSP/17) Procedure for Measurement Traceability and Calibration in Testing Laboratories

 POLICY STATEMENT

The Pesticide Testing Laboratory has a calibration plan to calibrate and/or verify its equipment.

Measurement made by the equipment is traceable to National or International standards through an unbroken chain of NABL accredited laboratories.

1. Purpose: To define a system in the organization for measurement Traceability and calibration, to meet the requirement of ISO/IEC 17025:2017.

2. Scope: This procedure is applicable to all equipment used in the laboratory.

3. Responsibility: Technical Manager is responsible to implement this procedure.

4. Procedure:

 

4.1 As per NABL guideline 142 following six essential elements for measurement traceability and calibration –

(a) an unbroken chain of comparisons

(b) uncertainty of measurement

(c) documentation

(d) competence

(e) reference to SI units

(f) calibration intervals

4.2 As per calibration plan all the equipments are calibrated by NABL accredited laboratory every year.

4.3 The calibration status sheet of all the testing equipments are maintained by the laboratory.

4.4 Reference materials are identified through a list and traceability is maintained.

4.5 Intermediate checks are being carried out to maintain confidence in the calibration status.

4.6 The intermediate checks are carried out by reference materials as per intermediate check plan.

5. References: Nil

CHANGE HISTORY

 

Sr.No.	Date of change	Revision no. of old document	Date of old document	Revision no. of Revised document	Date of Revised document	Nature of change (addition/deletion)

 

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