Selected ion flow tube mass spectrometry (SIFT-MS) is a revolutionary direct mass spectrometric technology for continuous, sensitive, selective, and robust analysis of diverse chemical species in the environment, consumer products and packaging, and food. Volatile organic compounds (VOCs) — such as benzene, ammonia, and formaldehyde — and inorganic gases such as sulfur dioxide and hydrogen sulfide are detected simultaneously and continuously in real-time. This talk showcases environmental and food safety applications where SIFT-MS overcomes limitations of traditional chromatographic approaches resulting in faster time to data, significantly higher throughput, and more accurate determination of product and environmental contaminants. Mobile and fenceline environmental use cases from the United Kingdom, New Zealand, China, and Korea are presented.