A recent testing result by GC-MS at the third party lab proved ultra low extractables level of Innovasil Pt-cured silicone tubing. By specialy treatment, cyclics and linear impurities content like D3, D4, D5 are indetectable as shown for Sample # 1-3, which represent Innovasil series tubing products. Whereas samples from other suppliers showed D3 and D4 peaks, which have potential negative influence in cell culture and other bio-pharmaceutical process.