Moisturemeterd compact

Manufactured by Delfin Technologies

Sourced in Finland

The MoistureMeterD compact is a portable device designed to measure the moisture content in a variety of materials. It provides accurate and reliable measurements, making it a useful tool for various applications.

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Lab products found in correlation

Inlab surface, by Mettler Toledo (1 mentions) Corneometer cm825, by Courage + Khazaka (1 mentions) Moisturemeterd, by Delfin Technologies (1 mentions)

5 protocols using moisturemeterd compact

Noninvasive Skin Biometrics Monitoring

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Skin pH was tested with the potentiometrically operating electrode Inlab Surface (Mettler Toledo GmbH, Giessen, Germany) measuring at an accuracy of ± 0.01. Skin moisture in percentage was measured with a MoistureMeterD compact (Delfin Technologies UK Ltd., Dorking, UK) with a measurement accuracy of ± 5%. The measuring principle is based on noninvasive detection of the tissue dielectric constant. Both instruments were in contact with the skin and especially the measurement of skin moisture needed contact pressure. Therefore, these measurements could have an influence on microcirculation parameters. Consequently, we measured these two parameters only before and after the experiment and thus chose a contact‐free infrared thermometer FT90 (Beurer medical GmbH, Ulm, Germany) at an accuracy of ± 2°C. In accordance with literature, there were no decisive temperature‐driven changes in blood flow under 35°C expected.40, 41 For this reason, we expected the accuracy was sufficient. The contact‐free measurement of skin temperature enabled this measurement during the experiment without an influence on microcirculation parameters. Data are provided as mean ± SD of all subjects (N = 10) per treatment duration and time of acquisition.

Borchardt T., Ernst J., Helmke A., Tanyeli M., Schilling A.F., Felmerer G, & Viöl W. (2017). Effect of direct cold atmospheric plasma (diCAP) on microcirculation of intact skin in a controlled mechanical environment. Microcirculation (New York, N.y. : 1994), 24(8), e12399.

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Measuring Limb Tissue Water Using TDC

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LTW was evaluated using the TDC method (MoistureMeterD Compact; Delfin Technologies LTD, Kuopio Finland). MoistureMeterD is a handheld noninvasive portable device that consists of an electronic control unit and an integrated probe that evaluates LTW to a depth of 2.5 mm (Lahtinen et al. 2015 (link)). Measurement depth is dependent on the dimensions of the device probe. Absolute TDC values decrease with increased depth of measurement. However, Mayrovitz reported that interlimb TDC ratios of affected to unaffected limbs were not significantly different across depths (Mayrovitz, Weingrad, and Lopez, 2015b (link)). Since the same device was used for all of the assessments, measurement depth was consistent across all of the sites and study participants. Using an interlimb TDC ratio of 1.2, the sensitivity and specificity was found to be 65% and 94%, respectively, using a diagnostic reference standard of ≥2 cm interlimb circumference difference (Bakar et al., 2018 (link)).

Mazor M., Smoot B.J., Mastick J., Mausisa G., Paul S.M., Kober K.M., Elboim C., Singh K., Conley Y.P., Mickevicius G., Field J., Hutchison H, & Miaskowski C. (2018). Assessment of Local Tissue Water in the Arms and Trunk of Breast Cancer Survivors With and Without Upper Extremity Lymphedema: Local tissue water in breast cancer survivors. Clinical physiology and functional imaging, 39(1), 57-64.

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Skin Hydration and Barrier Function

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Skin moisture was measured locally on the anterior forearm 10 cm distal to the wrist using a MoistureMeter D Compact (Delfin Technologies, Ltd., Kuopio, Finland), which measures the skin tissue dielectric constant noninvasively and converts it within seconds into a % skin water content on a scale from 0% to 100%. An increase in the measured value indicates an improvement in skin moisture. TEWL from the forearm was measured using a vapometer (SWL4001, Delfin Technologies Ltd., Kuopio, Finland), which harbors a humidity sensor in a cylindrical measurement chamber that records changes in relative humidity inside the chamber during the measurement and automatically calculates TEWL (g/m²h). A decrease in the measured value indicates an improvement in TEWL. All skin moisture and TEWL measurements were performed three times at each visit, and the average values were used for skin hydration analysis.

Jung K., Kim S.H., Joo K.M., Lim S.H., Shin J.H., Roh J., Kim E., Park C.W, & Kim W. (2021). Oral Intake of Enzymatically Decomposed AP Collagen Peptides Improves Skin Moisture and Ceramide and Natural Moisturizing Factor Contents in the Stratum Corneum. Nutrients, 13(12), 4372.

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Skin Hydration Measurement Techniques

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Skin hydration was measured at 0, 4, and 8 weeks using the Corneometer CM825 (Courage&Khazaka electronic GmbH). The Corneometer numerically displays skin capacitance at 30-40 μm below the stratum corneum, indicating hydration through the insulating ions remaining in the probe head (A.U.). Dermal hydration was measured using Moisturemeter D Compact (Delfin Technologies Ltd., Kuopio, Finland), which utilizes a 265 MHz high-frequency electromagnetic field to penetrate to a depth of 2 to 2.5 mm in the skin, measuring the tissue dielectric constant in terms of moisture content (%).

Na G.H., Kim S., Jung H.M., Han S.H., Han J, & Koo Y.K. (2023). Skin Anti-Aging Efficacy of Enzyme-Treated Supercritical Caviar Extract: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial. Nutrients, 16(1), 137.

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Evaluating Tissue Water Content using MoistureMeterD

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The local tissue water was evaluated by the MoistureMeterD and MoistureMeterD compact (MMDC) (Delfin Technologies Ltd., Kuopio, Finland). A low-intensity 300MHz signal is transmitted from the probe in contact with the skin. Based on information from the reflected wave, a tissue dielectric constant value is calculated. The probe has a penetration depth of 2.5 mm and corresponds to a maximum of 78.5% of pure water content based on the percentage of water content in the body. The presented tissue dielectric constant ratios are approximately the same as the new device MMDC, corresponding to a maximum of 100% pure water content based on a 100% scale [34 (link)]. Each site was measured once [35 (link)] at six points: 5 cm proximal and 5 cm distal to the antecubital fossa (medial, frontal, and lateral). If lymphedema was palpated more proximally or distally in the arm, complementary measurements were made 15 cm proximal or distal to the antecubital fossa. A significant positive correlation between arm tissue dielectric constant ratios and arm volume (p < 0.001, r = 0.690) has been reported [36 (link)].

Johansson K., Blom K., Nilsson-Wikmar L, & Brogårdh C. (2023). Early Intervention with a Compression Sleeve in Mild Breast Cancer-Related Arm Lymphedema: A 12-Month Prospective Observational Study. Cancers, 15(10), 2674.

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