In order to return any products to BMT for service or repair, please follow these steps:

  • Print and fill out the Service Form, including a Hazardous Material Certification
    (or make an equivalent statmement, signed)

  • Include your contact details (delivery & invoicing address, phone number), serial number(s) and reason of return in all your paperwork accompanying your shipment

  • An RMA is not needed from BMT

  • Ship to:  BMT Messtechnik GmbH, Attn. Klaus Tiedemann, Güterfelder Damm 87-91, D-14532 Stahnsdorf, Germany

  • For requests from North America, Mexico, Central America and the Pacific Rim please contact OSTI Inc.:

    For troubleshooting, we provide the following PDF documents:

    Cleaning instructions for our photometers

    PDF description
    BMT 964 cleaning the cuvette
    BMT 963 cleaning the cuvette
    BMT 961 cleaning the cuvette


    Further helpful documents:

    Further helpful documents
    AQ mounting Mounting holes of the BMT 964 AQ


    Older models documentation:

    order # description  
    MMF Flow meter, for air and oxygen, only
    BMT 961 High Concentration Ozone Measurement Photometer, out of production
    AD964-963 Signal Adapter 964-963 Signal Adapter
    BMT 961 T Timer option for OZONE ANALYZER BMT 961 C – German manual BMT 961 T
    BMT 961 TPC Temperature & Pressure Compensation for BMT 961 Analyzers – English Manual
    BMT 961 C High Concentration Ozone Measurement Photometer, Cabinet Version (IP65) – English Manual
    BMT 961 CL High Concentration Ozone Measurement Photometer, Cabinet Version (IP65)
    BMT 961 TIMER Timer board – for automatic zeroing. German description