Kugadzirisa masampuli akajairwa chinhu chinofanira kuitwa kakawanda panguva yekuedza. Tichitora kuyedza kwakabatana nezviratidzo zvemhando yemvura semuenzaniso, kugadzirisa masampuli akajairwa, nekuenzanisa kukosha kwakayerwa nereferensi yemuenzaniso wakajairwa, munhu anogona kuona kana kukanganisa kwemudziyo wekuyedza kuri mukati mehuwandu hwakatarwa, uye mumwe anogona kuona kana nzira yekuyera yemuyedzisiro yakarurama. Saka, kugadzirisa masampuli akajairwa kwakakosha zvikuru pakuvimbika kwekuyedza.
Zvinotevera zvicharatidza maitiro ekugadzirisa masampuli akajairwa eCOD, huyai muone.
Danho rekutanga kugadzirira Lianhua Technology's COD special consumables - potassium hydrogen phthalate (HOOCC6H4COOK), mvura yakasanganiswa, beaker, stirving rod, 1000mL volumetric flask usati wagadzirisa.
Danho rechipiri nderekutora huwandu hushoma hwe potassium hydrogen phthalate (HOOCC6H4COOK) woiomesa pa 105℃ kwemaawa maviri, woibvisa mushure mekutonhodza.
Danho rechitatu nderekuyera nemazvo 0.4251g ye potassium hydrogen phthalate yakaomeswa (HOOCC6H4COOK) woiisa mubeaker, woisa mvura shoma yakasanganiswa, wokurunga kusvika yanyungudika zvachose, wobva waisa mubeaker ine volumetric flask (beaker inogona kusukurudzwa katatu nemvura yakasanganiswa, uye mvura yekusukurudza inowedzerwawo mubeaker ine volumetric flask), wozopedzisira waderedza kusvika 1000mL.
Iye zvino, sampuro yeCOD ye500mg/L yagadzirwa. Sampuro yeCOD yakagadzirwa inogona kushandiswa kuyedza nekugadzirisa zvishandiso, uye nguva yekushanda kwayo inowanzo kuve mwedzi mitatu.
Zviri pamusoro apa ndiyo nzira yekugadzirisa COD standard sample mumagazini ino. Nditeverei kuti mudzidze rumwe ruzivo rwekuyedza!
Nguva yekutumira: Kurume-31-2025
