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Specialized Reagents for VN and VI Colorimeter

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These are the dedicated reagents compatible with VVNA's Model VN and Model VI instruments. Covering the mandatory and routine testing parameters for multiple fields including drinking water, surface water and sewage, they are designed for use with VVNA's Serie···

  • Model：Refer to the order number

  • Brand：VVNA

  • Type：Portable

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    Specialized Reagents for VN and VI Series Water Quality Analyzer
    No.ReagentsMeasuring MethodOrder number
    1CODLPotassium Dichromate Oxidation Method
    2CODLPotassium Dichromate Oxidation Method
    3PH6.86 Buffer

    4Ammonia(Freshwater)Nessler's Reagent Spectrophotometric Method
    5Ammonia(Seawater)Nessler's Reagent Spectrophotometric Method
    6Ammonia(Salicylic Acid Method)Salicylic Acid Spectrophotometric Method
    7Barium
    		Turbidimetric Method
    8Ozone Ⅰ(Indigo)Acidic Indigo Spectrophotometric Method
    9Ozone Ⅱ(DPD)DPD Spectrophotometric Method
    10IodineDPD Spectrophotometric Method
    11Chlorine DioxideDPD Spectrophotometric Method
    12FluorideSPADNS Photometric Method
    13Permanganate Index (Acidic)Acidified Potassium Permanganate Photometric Method
    14Permanganate Index (Alkaline)Alkaline Potassium Permanganate Photometric Method
    15Cadmium5-Br-PADAP-OP Photometric Method
    16CobaltPAN Spectrophotometric Method
    17SilicateSilicomolybdenum Blue Spectrophotometric Method
    18Hydrogen Peroxide (H₂O₂)Iodometric Photometric Method
    19Volatile Phenols (High Range)4-Aminoantipyrine Direct Spectrophotometric Method
    20Reactive Oxygen SpeciesDPD Spectrophotometric Method
    21Formaldehyde4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole (AHMT) Spectrophotometric Method
    22PotassiumSodium Tetraphenylborate Spectrophotometric Method
    23Hydrazinep-Dimethylaminobenzaldehyde Method
    24PhosphatePhosphomolybdenum Blue Spectrophotometric Method
    25SulfideN,N-Diethyl-p-phenylenediamine Spectrophotometric Method
    26SulfateBarium Sulfate Turbidimetric Method
    27Hexavalent ChromiumDiphenylcarbazide Photometric Method
    28AluminumChrome Azurol S Spectrophotometric Method
    29ChlorideMercuric Thiocyanate Spectrophotometric Method
    30Chloride Ion Masking Agent (TNC)

    31Chlorate 1/
    32Chlorate 2/
    33Manganese (Potassium Periodate)Potassium Periodate Spectrophotometric Method
    34Manganese (Formaldoxime Method)Formaldoxime Spectrophotometric Method
    35Molybdenum/MolybdateThiocyanate Spectrophotometric Method
    36UreaSodium Dichloroisocyanurate-Thymol Colorimetric Method
    No.ReagentsMeasuring MethodOrder Number
    37NickelDimethylglyoxime Photometric Method
    38BoronAzomethine-H Spectrophotometric Method
    39BerylliumChrome Azurol R Spectrophotometric Method
    40LeadXylenol Orange Spectrophotometric Method
    41CyanideIsonicotinic Acid-Barbituric Acid Spectrophotometric Method
    42Cyanuric AcidTurbidimetric Method
    43Dissolved OxygenIodometric Photometric Method
    44Trivalent ChromiumPhosphoric Acid Spectrophotometric Method
    45ArsenicArsenic Spot Method
    46Acidity/pH (Phenol Red Indicator)Standard Buffer Solution Method
    47Acidity/pH (Chlorophenol Red Indicator)Standard Buffer Solution Method
    48TitaniumSalicylfluorone Spectrophotometry
    49Iron1,10-Phenanthroline Spectrophotometry
    50Copper2,9-Dimethyl-1,10-Phenanthroline Spectrophotometry
    51Five Disinfectant ParametersDPD Spectrophotometric Method
    52Disinfection Tank Chlorineo-Tolidine Spectrophotometry
    53NitrateThymol Spectrophotometry
    54ZincPAN-OP Photometric Method
    55Bromine(Br2)DPD Spectrophotometric Method
    56SulfiteIodometric Photometric Method
    57NitriteDiazo-Coupling Spectrophotometry
    58Silver3,5-Br2-PADAP Spectrophotometric Method
    59Hardness(Low Range)Calmagite Spectrophotometry
    60Hardness(High Range)Calmagite Spectrophotometry
    61Free ChlorineDPD Spectrophotometric Method
    62Available ChlorineIodometric Photometric Method
    63Residual Chlorine(TMB)3,3’,5,5’-Tetramethylbenzidine
    64Turbidity 4000NTU

    65Total AmmoniaPersulfate Oxidation Method
    66Total ChromiumPotassium Permanganate Oxidation-Diphenylcarbazide Spectrophotometry
    67Total AlkalinityAcid-Base Indicator Spectrophotometry
    68Total Phosphorus(Low Range)Ammonium Molybdate Spectrophotometry
    69Total Phosphorus(High Range)Phosphomolybdenum Yellow Spectrophotometry
    70Total Residual ChlorineDPD Spectrophotometric Method

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