Courage + Khazaka electronic GmbH

Tewameter® TM Nano

Tewameter® TM Nano

measurements on scalp, lips, nail, etc.

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

    Apart from the many advantages of the Tewameter® in general, the Tewameter® TM Nano offers 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. 90 g, Resolution: relative humidity ± 0.01 % RH, Temp.: ± 0.01 °C, TEWL: 0.1 g/h/m², Measuring area: TEWL 0-320 g/h/m²

    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,
    ± 0.2° C below 20° C and above 60° C
    Rel. humidity (RH):
    ± 2.0 % for 0 to 80 % RH and 10° C to 50° C,
    ± 3.0 % above 80 % RH,
    ± 3.0 % below 10° C and above 50° C

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

    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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