Читать книгу pH of the Skin: Issues and Challenges - Группа авторов - Страница 47

Modern skin pH metres report pH values with a precision of ±0.01 to 0.1 units. A minimum dataset as described by Stefaniak et al. [12] should contain the following: (i) relevant endogenous (age, anatomical position, ethnicity, gender, observations on skin health, sebum and possible sweating) exogenous (skin hygiene/washing, possible occlusion of measurement positions and use of topical products) and environmental factors (record date, time and season); (ii) measurement conditions (acclimation time, temperature and relative humidity for pH meter and participants, pH electrode calibration and number of measurements); (iii) measurement results and variability thereof to at least 0.1 units (triplicate measurements should ideally be reported as geometric mean, although most published literature reported arithmetic mean, but clearly stated it as such); and (iv) any relevant deviations from the study protocol or skin surface pH measurement guidance.