What should you never do with chemicals unless instructed by the manufacturer's guidelines?

Mixing chemicals can lead to dangerous reactions that may produce harmful fumes, toxic substances, or even explosions. Each chemical has specific instructions on how it should be handled, and mixing them outside of those guidelines may compromise safety. Following the manufacturer's guidelines is crucial because they provide essential information on compatibility and safe handling practices. Missteps in this area can pose significant risks not only to the individual using the chemicals but also to others in the vicinity, making adherence to these instructions paramount.