PEEK Tubing or polyether ether ketone tubing is the best alternative to steel tubing for HPLC machine. It is highly flexible and high performance engineered tubing. It is designed for high thermal resistance and features good chemical and mechanical resistance properties. It is suitable for relentless use in HPLC application. Since stainless steel behaves reactively in some conditions, PEEK Tubing comes as a good alternative. Also, it can be cut from any point easily in comparison to stainless steel tubing.