The MCERTS-certified testo 350 is a portable emissions analyser designed to meet the growing demand for accurate and reliable monitoring in industries such as energy production, manufacturing, and waste management. Developed to comply with the UK’s Monitoring Certification Scheme (MCERTS), it ensures emissions data is credible, reproducible, and suitable for regulatory reporting. With multi-gas measurement capabilities, a rugged design for harsh conditions, wireless operation, and compatibility with industrial probes, the testo 350 addresses key industry challenges like regulatory complexity, extreme environments, and the need for operational efficiency. Real-world applications, such as its adoption by 2G Energy AG for maintaining CHP systems, demonstrate its effectiveness in replacing outdated tools, improving accuracy, and reducing costs. In summary, the testo 350 offers a dependable, compliant, and versatile solution for emissions monitoring, helping organisations meet legal obligations and environmental goals.