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Courage + Khazaka electronic GmbH

Tewameter® TM Nano

Ultra-Small TEWL Measurement Probe for Special Skin Sites

With its exceptional small measuring chamber (only 2 mm Ø), the Tewameter® TM Nano allows to measure the Transepidermal Water Loss (TEWL) in g/h/m² on small, or difficult to reach sites, e.g. nails, scalp with hair, lips, etc.

  • Advantages & Fields of Application

    The Tewameter® TM Nano offers all advantages of the "open chamber measurement" and has additional benefits:

    Tewameter® Nano - TEWL measurement on the scalp between hair
    Tewameter® Nano - TEWL measurement on the lip
    Tewameter® Nano - TEWL measurement on the nails

    • The ultra-small probe head (only 2 mm Ø) allows accurate and quick measurement of the TEWL in g/h/m² (pressure, occlusion, temperature). The small measurement chambers minimize the air turbulences inside the probe.
    • The measurement of the Tewameter® is the basic measurement for all cosmetic applications regarding efficacy/safety testing and claim support. The Tewameter® TM Nano is ideally suitable to measure on small sites, e.g. nails, lips, scalp with hair, hairy or small animals, etc.
    • Special rubber rings make the probe sit tightly even on slightly curved surfaces (e.g. the nails). As they are exchangeable, the rings can be cleansed hygienically.
    • New sensor technology for precise and very stable measurements.
    • The accurate calibration of the probe can easily be verified with the check calibration mode.

    The Tewameter® TM Nano can be connected to the MPA-systems.

    Other related probes available:

  • Measurement Principle

    Tewameter principleThe open chamber measurement of the Tewameter® is the only method to assess the TEWL continuously, which is necessary for most applications without influencing the skin surface. Numerous studies are available.

  • Technical Data

    Probe only:
    Dimensions: measuring chamber: approx. 2.3 cm high, Ø 2 mm, total contact surface: Ø 4 mm, length of the probe: approx. 15.3 cm, cable length:  1.3 m, weight: approx. 75 g (including cable), Resolution: relative humidity ± 0.01 % RH, Temp.: ± 0.01 °C, TEWL: 0.1 g/h/m², Measuring area: TEWL 0-320 g/h/m²

    Operation conditions: T: 10-40° C, RH: 30-70 % RH

    Measurement uncertainty:

    TEWL: ±10 % of the measured value plus ±1 g/h/m² for RH ≤ 80 %, ± 20 % of the measured value plus ± 2 g/h/m² for RH > 80 %

    Temperature (T): ± 0.1° C for 20 °C to 60 °C and ±0.2 °C outside this range

    Rel. humidity (RH): ± 2.0 % for 0 to 80 % RH and 10 °C to 50 °C, ± 3.0 % outside these ranges

    Technical changes may be made without prior notice.

Courage+Khazaka electronic GmbH
Mathias-Brüggen-Str. 91
50829 Köln, Germany
Phone: +49-221-9564990
Fax: +49-221-9564991
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