  We report a new design of an AC magnetic susceptometer compatible with the
Physical Properties Measurement System (PPMS) by Quantum Design, as well as
with its adiabatic demagnetization refrigerator option. With the elaborate
compact design, the susceptometer allows simple and quick sample mounting
process. The high performance of the susceptometer down to 0.1 K is
demonstrated using several superconducting and magnetic materials. This
susceptometer provides a method to quickly investigate qualities of a large
number of samples in the wide temperature range between 0.1 and 300 K.
