FSPT-3 is a specialized instrument for measuring skin parameters in vitro transdermal tests. The main obstacle for drugs to penetrate and exert their effects through the skin as a route of administration is the stratum corneum of the skin. In vitro transdermal testing (IVPT) is an important means of evaluating drug efficacy, and skin parameters have a significant impact on the consistency and effectiveness of IVPT test results. USP1724 provides clear requirements for assessing skin barrier integrity. In response to the importance of skin parameter assessment, the skin parameter comprehensive testing instrument specially designed by Fukosi Company can meet the requirements of skin parameter screening in IVPT experiments and improve the success rate of IVPT experiments. Compared with similar instruments, FSPT-3 has the characteristics of simple operation, complete functions, and stable and reliable data measurement results.