**Summary:**
This office order, issued by the Central Pollution Control Board (CPCB) Instrumentation Laboratory in Delhi on May 15, 2025, announces an extension to the deadline for participating environmental laboratories to submit test reports for the 37th Analytical Quality Control (AQC) exercise. The extension, effective immediately, provides an additional two weeks, until June 04, 2025, for the submission of test reports related to heavy metals and physicochemical parameters. This extension is granted due to delays in sample delivery, as a continuation of the office order no. LAB99202021INSTLABHOCPCBHO, dated April 16, 2025, concerning samples certified on April 17, 2025. The order was approved by the competent authority within the CPCB. Inquiries can be directed to Dr. K. Ranganathan, Scientist E and Divisional Head, Instrumentation Water Laboratory, CPCB, Delhi 110032. The CPCB is under the Ministry of Environment, Forest and Climate Change, Govt. of India, Parivesh Bhawan, East Arjun Nagar, Delhi 110032.
Key Entities Referenced
Central Pollution Control Board: A governmental organization responsible for pollution control in India.
Instrumentation Laboratory: A laboratory of the Central Pollution Control Board.
Delhi: Location of the Central Pollution Control Board Instrumentation Laboratory, Delhi, India.
Analytical Quality Control AQC exercise: A program for quality control in environmental laboratories.
Heavy Metals: Parameter being tested by environmental laboratories during the Analytical Quality Control exercise.
Physicochemical: Parameter being tested by environmental laboratories during the Analytical Quality Control exercise.
Dr. K. Ranganathan: Scientist E, Divisional Head, Instrumentation Water Laboratory, Central Pollution Control Board.
Ministry of Environment, Forest and Climate Change: The ministry under which Central Pollution Control Board functions.
Central Pollution Control Board
Instrumentation Laboratory
Delhi — 110032
Office Order
File No: LAB-99/20/2021-INST-LAB-HO-CPCB-HO Date: May 15, 2025
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Sub : Extension of two-week time period for submission of test reports of 37" Analytical
Quality Control (AQC) exercise by all participating environmental laboratories.
In continuation to the office order no. LAB-99/20/2021-INST-LAB-HO-CPCB-HO, dated
16-04-2025, due to delay in sample delivery, it has been decided to extend two-week more
time period i.e. up to June 04, 2025 to all participating laboratories for the submission of test
reports of 37 Analytical Quality Control (AQC) exercise to the samples with the certificate
dated 17" April 2025 for the parameter “Heavy Metals and Physicochemical”.
This has been issued with the approval of competent authority, CPCB.
Dr. K. Ranganathan, Scientist — E,
Divisional Head, Instrumentation & Water Laboratory,
Central Pollution Control Board, Delhi -110032
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Parivesh Bhawan, East Arjun Nager, Defhi-110932