Analytical instrumentation
for thermal power engineering and ecology
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    MARK-3010 will replace the MARK-302T and MARK-303T

    MARK-3010 will replace the MARK-302T and MARK-303T
    13 августа 2026
    Dear Partners,

    We would like to inform you that, effective September 1, 2026, the company "VZOR" will discontinue the production of dissolved oxygen analyzers MARK-302T and MARK-303T.

    As a modern alternative, we offer our flagship model — the MARK-3010.

    Key advantages of the MARK-3010:

    -  A sensor with nearly three times higher accuracy;

    -  Minimal maintenance costs: membrane replacement is required no more than once a year;

    -  No need for water storage or preservation procedures for the sensor;

    - Extended operating temperature range from 0 to 70°C (short-term up to 100°C);

    - Compatible with any sample flow rates, ranging from ultra-low (from 20 ml/min) to high (1500 ml/min);

    For all previously signed contracts, commercial offers, and invoices issued for the MARK-302T and MARK-303T models, all delivery obligations will be fulfilled within the validity period of these documents. 

    The company "VZOR" will continue to honor its warranty and post-warranty obligations for all previously manufactured MARK-302T and MARK-303T analyzers and will also provide technical support as well as supply components and spare parts.