(PMIR-GE) Pike Technologies MIRacle Germanium ATR Accessory, is designed for soft plastics, liquids and powders. As pictured the liquid trough accessory is installed. The trough can easily be removed for solid materials. The Ge ATR crystal works well with all liquids and dark soft materials The pressure tower is spring loaded to prevent excessive pressure on the crystal. Works on all Thermo Nicolet FTIRs except the IS5 and Summit models.