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Skin-pH-Meter PH 905
pH-Measurement on Skin , Scalp and nail
Overview
The Skin-pH-Meter PH 905 is a quick, easy, and economical tool designed to specifically measure the pH value of the skin surface and scalp. Developed by Courage + Khazaka electronic GmbH, it provides objective data for evaluating the skin’s acid mantle, hydrolipidic film, barrier condition, and changes caused by cosmetic products or dermatological treatments.
The measurement is based on a high-quality combined electrode, where both the glass H+ ion-sensitive electrode and the reference electrode are integrated into one housing. This electrode is connected to a probe handle containing the measurement electronics, allowing direct and reliable pH assessment on the skin surface.
Measuring skin surface pH is important for evaluating the quality of the hydrolipidic film and understanding how products may affect the skin’s natural balance. This is especially relevant in the development and testing of soaps, cleansers, detergents, moisturizers, sensitive skin products, deodorants, and scalp-care formulations.
As part of the Courage + Khazaka MPA system, the Skin-pH-Meter PH 905 can be combined with other probes such as the Corneometer®, Tewameter®, Sebumeter®, Mexameter®, and Cutometer® to provide a more complete and quantitative analysis of skin and scalp condition.
Features
Very quick measurement
Modern, high-quality electronics provide reliable results in approximately 1 second, helping avoid occlusion effects.
Single and continuous measurement modes
Supports both individual pH readings and continuous measurements for longer monitoring periods.
Suitable for long-term measurement
Continuous measurement can be performed over extended periods, including in-vitro applications.
Planar probe head
The flat probe head is designed for optimal contact with the skin surface.
Precise pH display
pH values are expressed with one decimal point for clear and practical interpretation.
User calibration
Regular calibration can be performed by the user to maintain measurement reliability.
Established scientific instrument
Widely used in cosmetic, dermatological, and research studies worldwide.
Technology
The Skin-pH-Meter PH 905 measures skin surface pH using a high-quality combined electrode. In this electrode design, both the H+ ion-sensitive glass electrode and the additional reference electrode are integrated into one housing.
The electrode is connected to a probe handle that contains the measurement electronics. When the probe is placed on the skin or scalp surface, the electrode detects the hydrogen ion activity and converts it into a pH value.
This design allows fast, direct, and reliable measurement of the skin’s surface pH, making the PH 905 suitable for evaluating the skin’s acid mantle, hydrolipidic film, and changes caused by cosmetic products, cleansers, detergents, or dermatological treatments.
Application
Product development and claim support
Used in pharmaceutical, cosmetic, and household product fields for the development and evaluation of skin care, hair care, detergents, pharmaceuticals, and related products.
Cosmetic and dermatological claims
Supports claims such as pH-neutral, respects skin pH, for sensitive skin, protecting, restoring/repairing, balancing/normalizing, soothing, cleaning/purifying, anti-acne, anti-dandruff, anti-bacterial, and anti-pollution.
Dermatological research
Suitable for basic dermatological research involving both human and animal skin.
Occupational health studies
Helps demonstrate the importance and effectiveness of skin protection products in specific workplace environments where skin pH may be affected.
Available Configuration
The pH-Meter PH 905 is available in multiple configurations: as a stand-alone MDD 4 device, integrated into the Derma Unit SSC 3, connected to MPA systems, or as a wireless probe.
MPA
MDD 4
Wireless
SSC 3
FAQs
What does the Skin-pH-Meter PH 905 measure?
The Skin-pH-Meter PH 905 measures the pH value of the skin surface or scalp. It helps evaluate the skin’s acid mantle, hydrolipidic film, and surface balance.
How does the PH 905 work?
The measurement is based on a high-quality combined electrode, where the H+ ion-sensitive electrode and reference electrode are placed in one housing. The electrode is connected to a probe handle containing the measurement electronics.
How fast is the measurement?
The PH 905 provides results in approximately 1 second, allowing quick and reliable pH assessment while helping avoid occlusion effects.
Can the user calibrate the PH 905?
Yes. Regular calibration can be performed by the user to help maintain reliable and accurate measurements.
Does the PH 905 require special storage during use or when not in use?
Yes. The PH 905 probe requires proper care to maintain electrode performance. During measurement sessions, the pH probe should be kept in distilled water. When the probe is not being used, it should be stored in KCl solution according to the manufacturer’s instructions.
What types of products can be tested with the PH 905?
The PH 905 is commonly used for testing skin care, hair care, cleansers, detergents, pharmaceuticals, anti-acne products, anti-dandruff products, sensitive skin formulations, and pH-neutral products
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