Labfacility offer Environmental sensors and instrumentation including room temperature and radiation sensors, infrared thermometers, light, pressure and moisture meters, together with a large range of USB data loggers, wifi loggers and 21-CFR compliant data loggers.
https://www.labfacility.com/products-by-sector/environmental-products.html
Comment: Hydrogen requires a long-term mindset
I'm fairly certain there were plenty of nay sayers in the early 19th century that refused to see the benefits of railways and steam power and...