Nā kiko'ī o ka loiloi noi noi oxygen:
2ML o kahi wai a iʻole ka wai wai i hoʻohuiʻia i kahi papa o ka wai 16mm colcture crupture e pili ana i ka nui o ke aniani a me kahi catalyst. Hoʻopiliʻia ka pahu me kahi polyproopylene, ptf i nā pāpale ltf a hoʻomehanaʻia i loko o kahi poloka block ma 150c no 2 mau hola. Ua hōʻemiʻia ka chromimal a me ka moromium i kahi chromium'ōmaʻomaʻo. ʻO keʻano o ka waihona kumu no ka spectroophotomtric he 5-150ppm (ana i ka 420nm).