*Terms and Conditions Applied:
- PRIMA will only measure combustion efficiency of single boiler and give report for FREE.
- If multiple boilers present at the company, except the first one all others will be chargeable.
- All Travelling and Lodging expenses to be born by the customer
diksha bhatt
CPCB Protocol 2025
Ensuring CPCB Compliance: Understanding the Revised OCEMS Calibration Protocol (Effective July 2025)
India is taking decisive steps toward cleaner air and sustainable industrial practices. The Central Pollution Control Board (CPCB) has released the Revised Calibration Protocol for Online Continuous Emission Monitoring Systems (OCEMS), coming into effect from July 2025.
This new directive strengthens emission data integrity by enforcing stricter calibration and testing standards for both gaseous and particulate monitoring systems — ensuring that industries maintain accurate, reliable, and traceable emission data.
Key Highlights of the Revised CPCB OCEMS Protocol
The revised protocol introduces the following key compliance requirements:
- Quarterly calibration for gaseous emission analyzers
- Annual performance testing by accredited laboratories
- Quarterly calibration checks for PM (particulate matter) monitoring systems
- Annual performance testing for PM-CEMS under operational conditions
CPCB Requirements and Our Accredited Solutions
| CPCB Requirement | TCQA Labs’ Accredited Solution | |
| Gaseous Emission – Quarterly Calibration | 3-point calibration (including zero) using Certified Reference Material (CRM) gases traceable to SI units. Conducted under ISO/IEC 17025:2017 accredited scope. | |
| Gaseous Emission – Annual Performance Testing | Comprehensive testing as per EN 14181, covering functional checks, linearity, variability, and a 5-point SRM comparison. | |
| PM Emission – Quarterly Calibration Check | Comparison with isokinetic sampling as per IS 11255 Part 1, conducted under running load conditions with accredited laboratory support. | |
| PM Emission – Annual Performance Testing | Full performance testing under ISO/IEC 17025:2017 accreditation, including zero/span check, calibration function, and variability tests. |
Why Regular Calibration Is Essential
Routine calibration and performance testing are vital for:
✅ Regulatory compliance with CPCB/SPCB mandates
✅ Accuracy and reliability in emission monitoring
✅ Early detection of analyzer drift or malfunction
✅ Support for ESG and sustainability reporting
Accurate monitoring not only avoids non-compliance penalties but also reinforces your organization’s commitment to responsible environmental stewardship.
How TCQA Labs Supports Your Compliance Journey
TCQA Labs Pvt. Ltd. is an ISO/IEC 17025:2017 accredited laboratory, offering end-to-end calibration and performance testing for Online Continuous Emission Monitoring Systems (OCEMS).
Our services include:
- On-site 3-point and 5-point calibration
- Performance testing as per EN 14181
- Isokinetic stack sampling and SRM comparison
- Complete documentation for CPCB/SPCB audits
conclusion
Partner with TCQA Labs for Sustainable Compliance
By partnering with TCQA Labs Pvt. Ltd., your organization can seamlessly adapt to the CPCB’s Revised OCEMS Calibration Protocol (July 2025)—ensuring operational reliability and environmental accountability.
📞 Interested in discussing your facility’s compliance readiness?
👉 Contact TCQA Labs or schedule a consultation with our experts to explore our calibration methodology, timelines, and service options.
Together for a Cleaner Future
At TCQA Labs, we believe that compliance today creates a cleaner, greener tomorrow.
Let’s strengthen India’s emission monitoring standards—one calibration at a time.
*Terms and Conditions Applied:
- PRIMA will only measure combustion efficiency of single boiler and give report for FREE.
- If multiple boilers present at the company, except the first one all others will be chargeable.
- All Travelling and Lodging expenses to be born by the customer