1. Test items
Water absorption: It is a core indicator and is related to the practical performance of towels. On the one hand, the dripping method can be used to hang the soaked towel and record the time from the beginning of dripping to the end of dripping. The shorter the time, the stronger the water absorption; on the other hand, simulate the wiping scene, wipe the simulated skin surface with a certain amount of water with a towel, and then use a humidity meter to detect the residual water. The less the residue, the better the water absorption, which can ensure that the user can wipe dry quickly and feel dry.

Softness: Touching the feel is an intuitive judgment. Professional testing requires the help of a fabric softness meter to analyze its bending stiffness and surface friction coefficient from the fiber level. The smaller the value, the softer it is. Only in this way can it gently care for the skin, which is especially critical for sensitive skin groups such as babies and the elderly to avoid friction damage.

Color fastness: It must withstand the test of multiple solutions. Soak the towel in cold water, hot water and detergent solution for a certain period of time, take it out and dry it, and compare it with the original color. If the color fastness is poor, it will not only easily stain other clothes during washing, but also fade during daily use, and the dye may adhere to the skin and cause allergies, so this indicator protects beauty and health.

Antibacterial performance: Focus on common pathogens such as Escherichia coli and Staphylococcus aureus, place the towel in an environment simulating daily temperature and humidity, and contaminated with sweat and sebum, inoculate bacteria for several days, and compare the number of bacteria before and after the culture. Effective antibacterial can inhibit the growth of odor and extend the cleaning time of the towel.

2. Testing method
Water absorption test: Select a number of towels of the same specification, immerse them in the same amount of water at the same time, take them out and hang them at regular intervals, and use a stopwatch to record the end of dripping; you can also use professional simulated skin props and humidity sensors to accurately compare the difference in water absorption.

Softness test: Professionals first touch and score by hand, and then combine with fabric softness meter measurement to double guarantee accurate judgment. The instrument deeply analyzes the softness from the mechanical properties.

Color fastness test: Strictly follow the national standards to prepare the soaking solution, accurately control the soaking time, and compare the color card after drying to accurately evaluate the grade according to the color difference.

Antibacterial performance determination: Inoculate the target bacteria in the culture medium under sterile operation, put the towel sample on it for incubation, count the number of colonies after the expiration, and judge the antibacterial effect by comparing with the blank sample.

3. Testing standards
National standards specify various indicators in detail. Water absorption specifies the lower limit of water absorption or the upper limit of residual water in a specific time according to the towel category; softness is clearly pided into grades according to the instrument value; color fastness corresponds to different usage scenarios from low to high; antibacterial performance specifies the minimum inhibition rate for common pathogens, setting a clear bottom line for product quality.

4. Significance of testing
For consumers, accurate testing is the "eye of fire" for purchasing high-quality towels, helping to select skin-friendly, clean, and durable products, improve living comfort, and protect skin health. Enterprises can polish product quality, break through the competitive red ocean, and establish a reputation by benchmarking production. Looking at the industry, standardized testing is the driving force of innovation, spurring technological iteration, promoting product upgrades, meeting perse needs, and allowing small towels to continue to be renewed.