The shoe sample filled with steel balls as a thermal transfer medium is placed on a copper plate inside the cold box keeping the constant temperature at -17℃. The upper top opening is carefully closed with a suitable plug. The temperature probe is fixed to the insole or insock. The temperature on the insole or insock right after placing the test piece in the chamber and after 30 more minutes is measured using the temperature measuring device connected to the temperature probe. The temperature decrease measured during the 30 minute period of cooling is reported.
This low-temperature test chamber also can be installed with different flexing apparatuses for the tests of Bally flexing, Vamp (Upper) flexing, Ross flexing, etc.
EN ISO 20344 5.13, GB/T 20991, AS/NZS 2210.2 Determination of insulation against cold