BTO® (Bleed and Temperature Optimized) red-orange septa are the most widely used of the premium septa. The material and processing have been chosen to allow the BTO septa to be used at 400°C in the injection port.
Agilent 5890, 6850, 689, 7890 and HP4890 (OEM 5183-4757 or 5183-4757-100)
PerkinElmer Clarus 590 and 690 (OEM N6621028 or N6101748)
Thermo Scientific TRACE 1300 series GC (OEM 31303233-BP)
