[EN 12792:2003, 53]:duct fitting which affects a change in the direction of a flow.(see also duct fitting)

[ISO 16814:2008, 3.8]:any micro-organism or part of a living organism or substance of biological origin capable of producing an adverse effect on human health or discomfort or damage to human property.NOTE Biological contaminants do include microbial contaminants and other substances, … Continue reading →