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  • MD 100 COD : Portable COD photometer

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    Measurement of Chemical Oxygen Demand (COD) with reagents

    MD 100 COD
    Portable COD photometer

    For measurement of COD (Chemical Oxygen Demand)

    Brand: Lovibond

    • Waterproof
    • Scroll memory
    • Automatic switch-off
    • Real-time clock and date
    • Calibration mode
    • Backlit display
    • Storage function
    • Suitable for use as a reference instrument
    • ST-COD sealed tubes ready for use
    • Suppression of chloride interference
      • up to 1000 mg/l (low & middle range)
      • up to 10000 mg/l (high range)
    • 3 ranges:
      • Low range: 0 – 150 mg/l,
      • Middle range: 0 – 1500 mg/l
      • High range: 0 – 15000 mg/l


    The MD 100 uses high quality interference filters with long-life LEDs as a light source without any moving parts in a transparency sample chamber. The units supply accurate, reproducible results very quickly. Other major advantages include ease of operation, ergonomic design, compact dimensions, and safe handling.

    The calibration and software-based adjustment options mean that the MD 100 is also suitable for use as a testing instrument. The tests are conducted using either Lovibond tablet reagents with long-term stability and a guaranteed minimum 5 or 10 year shelf life, VARIO powder reagents, or using liquid reagents.

    Scroll Memory (SM)
    To avoid unnecessary scrolling for the required test method, the instrument memorizes the last method used before switching off the instrument. When the instrument is switched on again, the scroll list comes up with the last used test method first.

    Calibration certificate
    Beside the “Certificate of Compliance” which is supplied with the MD 100, calibration certificates are available at cost on request. Calibration certificates are individually supplied per instrument and per method. The Calibration Certificate has to be ordered together with the new instrument and cannot be delivered at a later stage.

    N.I.S.T Traceability
    The instrument has a factory calibration, which is related to international standards which are not N.I.S.T traceable. The instrument may be calibrated by the user in a “user calibration mode” with N.I.S.T traceable standards.
    (N.I.S.T. = National Institute of Standards and Technology)

    Optics LEDs, interference filters (IF) and photo sensor in transparent sample chamber. Depending on the version, up to 3 different interference filters are used.
    Wavelength specifications of
    interference filters:
    430 nm Δ λ = 5 nm
    530 nm Δ λ = 5 nm
    560 nm Δ λ = 5 nm
    580 nm Δ λ = 5 nm
    610 nm Δ λ = 6 nm
    660 nm Δ λ = 5 nm
    Wavelength Accuracy  ± 1 nm
    Photometric Accuracy 3% FS (T = 20°C – 25°C)
    Photometric  Resolution 0.01 A
    Power Supply 4 micro batteries (AAA), capacity approx. 17 hours or 5000 tests
    Power off automatic switch-off
    Display backlit LCD (on keypress)
    Storage internal ring memory for 16 data sets
    Interfaces infrared interface for test data transfer
    Additional feature real time clock and date
    Calibration factory calibration and user calibration. Reset to factory calibration possible
    Dimensions 155 x 75 x 35 mm (L x W x H)
    Weight basic unit approx. 260 g
    Environmental conditions temperature: 5 – 40 °C
    rel. humidity: 30 –90% (non condensing)

    RD 125

    RD 125 Thermoreactor – for COD test tube digestion