What Does It Measure? The Skin-pH-Meter PH 905 is a quick, easy and economical tool to specifically measure the pH on the skin surface or the scalp. The measurement is based on a high quality combined electrode, where both H+ ion sensitive electrode and additional reference electrode are placed in one housing. It is connected to a probe handle containing the measurement electronics. There are many fields of application where changes in skin pH are of interest. • In cosmetological and pharmaceutical application fields for the development of home and personal care products. • The role of the pH has gained importance in skin health and is therefore subject to basic research. • Studies on the changes in the microbiotic environment on skin and scalp. • For educating on skin health and suitable products in occupational health. • The modern, high quality electronics of the probe allow a very quick (1 s) and reliable measurement avoiding occlusion effects. • The probe head is planar for measuring on the skin surface. • Continuous measurements over long-term periodes possible, e.g. for in-vitro applications. • Display of the pH-value with one decimal. • Regular calibration can easily be done by the user. • Available for C+K MPA-systems, as stand-alone device (MDD) and wireless probe (operation with RR 200 & MPA WLplus software). -measuring electrode reference electrode inner buffer -diaphragm membrane Courage+Khazaka electronic GmbH since 1986 Mathias-Bruggen-Str. 91 ■ 50829 Koln ■ GERMANY Technical Data Dimensions: 26.5 cm, Measuring surface: 0 12 mm flat; Weight: 116 g Measurement range: pH 1,0 to pH 11,0, Measurement uncertainty: ± pH 0.1 Technical changes may be made without prior notic