COD Tube maka ule mmiri sitere na Aijiren
16mm COD Test tube maka nyocha mmiri
Nkọwa nke Chemical Oxygen Demand Test:<\/p>
2mL nke mmiri ma ọ bụ watse mmiri sample na-agbakwunyere na a 16mm iko tub tube nwere mgbaze reagent na a catalyst. A na-ekpuchi tube ahụ na polypropylene, PTFE lined okpu ma kpoo ọkụ na ngọngọ digester na 150C maka awa 2. Chromium Hexavalent oroma na-ebelata ka ọ bụrụ chromium trivalent green. Usoro nyocha maka usoro spectrophotometric bụ 5-150ppm (a tụrụ na 420nm).<\/p>
Kpọtụrụ US
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Kekọrịta:
Nke gara aga:
16mm Culture tubes PP Black Caps
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