
vishaaktata shreni mulyankan

ee. pee. aeye. ney keetnashak utpaadon key teevra khatron key liye chaar vishaaktata shreniyon kii sthaapana kii, jisamen "shreni I" uchchatam vishaaktata shreni (vishaaktata varg) haye. adhikansh maanav khatare, ehatiyaati bayaan, aur maanav vyaktigat suraksha upkaran bayaan keetnashak utpaad kii vishaaktata shreni parr adharit hain joe beche yaa vitarit kiye jaate hain. isake alawa, vishaaktata shreniyon kaa upayog labeling key alawa anya niyaamak uddeshyon key liye kiya jaa sakata haye, jaise kii pratibandhit upayog key liye vargeekaran aur baal-pratirodhi packaging key liye aavashyaktaaen. 
kuchh mamalon mein, upayog key liye utpaad kii vishaaktata shreni key aadhar parr bayanon koo bhee anumati dee jaati haye. neeche dee gaee talika mein nirdisht roop seey, paanch prakaar key teevra sampark key liye ack vishaaktata shreni nirdhaarit kii gaee haye.
avalokan.
ack seey laker chaar taka vishaaktata kii chaar shreniyaan hainh
keetnashak utpaadon key liye teevra vishaaktata shreniyaan.
nimnalikhit talika mein, sabse baaen stambh mein prashaasan key maarg koo soochibaddh kiya gayaa haye.