Common Abbreviations

EH40 - HSE Guidance on Workplace Exposure Limits: A Quick Overview A government publication listing legally enforceable limits for exposure to hazardous substances (COSHH) in the workplace. Often just called “EH40”, it covers eight-hour (TWA) and short-term (STEL) exposure limits, updated periodically, most recently the fourth edition published January 17, 2020. Key Updates and Compliance...

PID - Photoionisation Detector Photoionisation detectors, or PIDs, are essential tools for detecting volatile organic compounds (VOCs) across various industries. Utilising ultraviolet light to ionise gas molecules, PIDs can measure concentrations from parts per millions and parts per billions. PIDs function by emitting ultraviolet light that ionises gas molecules. This process releases electrons, creating positively...

What is NDIR Technology and How Does it Work for CO2 NDIR (Non-Dispersive Infrared) sensors are used in gas detection, known for their reliability and accuracy. They function by measuring the infrared light absorbed by specific gases, creating a unique absorption pattern for each gas. How NDIR Sensors Work An NDIR sensor includes an infrared...

VOC - Volatile Organic Compounds Volatile Organic Compounds, or VOCs, are organic chemicals that easily evaporate at room temperature and can significantly affect indoor air quality and health. They are commonly found in products like paints, cleaning supplies, and furniture. Sources of VOCs VOCs are emitted from various sources. Indoors, they come from paints, cleaning...