AMS GVP kits use an AMS slide hammer or an electric rotary drive hammer and GVP drive extensions to insert a stainless steel GVP tip to the desired sampling depth. Fluoropolymer tubing is attached to a barb fitting on the GVP tip for remote sampling from the surface. Two GVP tips are available for use with AMS GVP kits – dedicated gas vapor tips, and the AMS Retract-A-Tip.