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    ชุดทดสอบคาร์บอเนต ฮาร์ดเนส (10 – 350 ppm.)

    VISOCOLOR® HE Carbonate Hardness C20 

    Titrimetric determination of carbonate hardness (p/m Alkalinity

    The determination is preformed as titration with hydrochloric acid against a mixed indicator, which changes colour at pH 4.5. (Reaction principle analogous to DIN EN ISO 9963-1 C2 and C24)

    Data and ordering information
    Cat. No. 915 003 (915 203)
    Type high sensitive titration kit (refill pack)

    syringe is sufficient for the determination of 0.5 – 20 °d       or 0.2– 7 mmol/l H(corresponds to 10 – 350 mg/l CaCO3)    1gradation mark = 0.5 °d = 0.2 mmol/l H+

    Sufficient for about 200 tests with an average carbonate hardness of 10 °d or 4 mmol/l H+
    Shelf life at least 2 years
    Sea water suitability


    Detectable with PF-11 no

    Carbonate hardness is that portion of calcium and magnesium ions which are present as carbonate or hydrogen carbonate.

    Normally the carbonate hardness is smaller than the total hardness. If the carbonate hardness is larger than the total hardness, you should trace the origin of this abnormal conditions, e. g. discharge of alkali hydrogen carbonates or high
    buffer capacity.


    131 อุทยานวิทยาศาสตร์ประเทศไทย อาคารกลุ่มนวัตกรรม1 ต.คลองหนึ่ง อ.คลองหลวง จ.ปทุมธานี 12120 โทร  081-847-6768, 02-191-3928 แฟกซ์ 0-2564-7896 คุณโทณิวัฒน์ 085-811-4779, คุณนารีรัตน์ 085-814-9653

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    131 Thailand Science Park. Innovation Cluster 1 Building,

    Klong 1, Klong Luang, Pathumthani 12120 Thailand. 

    Tel.  02-191-3928 Fax 02-191-3929

    For more information please contact 081-847-6768 (Ms. Nareerat) IDLine: @alltestkit

    E-mail :


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