Corneometer® CM 825

• The Measuring Principle

  The measurement is based on capacitance measurement of a dielectric medium. The Corneometer® CM 825 measures the change in the dielectric constant due to skin surface hydration changing the corneo capacitance of a precision capacitor. The measurement can detect even slight changes in the hydration level.

  

• Advantages of the Corneometer®

  • The capacitance measurement is not influenced by substances in the skin (e.g. salts or residues of topical applied products.

  • It allows very quick measurement (1 s) important to avoid occlusion.

  • Continuous measurements over a longer time period can optionally be performed.

  • The measurement depth is very small (10-20 μm of the Stratum corneum) to avoid the influence of deeper skin layers (e.g. from the blood vessels). Measurements on an only 15 μm thick foil show only 20 % of the original measurement value.

  • The probe is small and lightweight for easy handling and measurement on all body sites (e.g. lips etc.).

  • The spring in the probe head ensures constant pressure on the skin enabling exact, reproducible measurements.

  • The accuracy of the Corneometer® probe and the penetration depth of the scatterfield can be checked easily anytime.

  • The probe head can quickly be cleaned after each measurement.

  • Worldwide established as "corneometry" with a broad range of studies. The Corneometer® has even been used on a space mission on the ISS.

  • The Corneometer® CM 825 and its predecessor Corneometer® CM 820 are the only skin moisture measurement instruments of which the accuracy have ever been evaluated in a broad multicentric study*

   

  *U. Heinrich, U. Koop, et al.: Multicentre comparison of skin hydration in terms of physical-, physiological- and product-dependent parameters by the capacitance method (Corneometer CM 825), International Journal of Cosmetic Science, 2003, 25, 45-51

  

  

  

• Field of Application

  The hydration measurement is the basic measurement for all bio-medical and cosmetic applications.

   

  • Ideal instrument for formulation, claim support and efficacy testing of all cosmetics & skin care products (personal care, irritation research, soaps and cleansers, occlusive product development ), raw materials, pharmaceuticals, household products, detergents, food supplements and many more.

  • It is used for objective clinical diagnosis or for monitoring therapies, not only in dermatology, but also in burn & wound healing, geriatrics, neonatology, genetics, veterinary medicine and other disciplines.

  • It gives information on the course of treatments and is suitable for medical surveys.

  • In occupational health it is possible to detect skin problems before they become apparent.

   

  The Corneometer® CM 825 is available as a stand-alone device, connectable to the MPA systems, as a wireless probe or in the Derma Unit SSC 3.

  

  

• Technical Data

  Probe only:

  Dimensions: 11 cm, Cable length: approx. 1.3 m, Measuring surface: 49 mm², Weight: 41 g

   

  Measurement principle: capacitance, Units: arbitrary Corneometer® units, Measurement frequency: 0.9-1.2 MHz, Pressure: approx. 1.0 N ± 10 %, Accuracy: ± 3%

   

  Technical changes may be made without prior notice.