Our Internal Groove PEEK Sample Loop with is for PR/EV700/750-100. PEEK sample loops are alternatives to stainless steel loops. Provided with a clean and straight cut for easy installation onto the valve. PEEK polymer is inert to almost all organic solvents and is biocompatible which gives PEEK loops added versatility. It has a replacement PEEK stator face assembly. It has a volume of 1 µL.