HP ProSignia 120 Maintenance And Service Manual page 71

Table 4-2 lists the shielding protection provided by antistatic bags and floor mats.
Material
Antistatic plastic
Carbon-loaded plastic
Metallized laminate
4-6 Removal and Replacement Preliminaries
Table 4-2
Static-Shielding Materials
Use
Bags
Floor mats
Floor mats
Voltage Protection Level
1,500 V
7,500 V
15,000 V