team inspector chemical and hazmat wearing protective mask using laptop and write note on clipboard. wastewater chemical residue

industrial human danger chemical engineer inspector measuring occupation pollution authority automated biochemistry biology checklist chemistry comparison concentration discovery efficiency factory microbiology laboratory examining safety science research recycling working analysing labcoat garbage man hazardousacedil iexcl hazardous industry mask manufacturing equipment protective uniform production scientist plastic technology white toxic dangerous warning team hazmat wearing laptop write note clipboard wastewater residue harmful substances body environment