Last update: 5 June 2024

Injection port septum
P/N Aspetto Qty Remarks Applicable models
201-35584 20 Silicone rubber, white, injection unit temperature: lower than 250℃ TQ8040
TQ8050
TQ8030
QP2020
QP2010 Ultra
QP2010 SE
QP2010
QP2010 Plus
PARUM2
2025
2030
2014
201-35584-84 200 Silicone rubber, white, injection unit temperature: lower than 250℃ TQ8040
TQ8050
TQ8030
QP2020
QP2010 Ultra
QP2010 SE
QP2010
QP2010 Plus
PARUM2
2025
2030
2014
221-48972-91 20 Long-life (LL), blue, low bleed, 450℃ max. TQ8040
TQ8050
TQ8030
QP2020
QP2010 Ultra
QP2010 SE
QP2010
QP2010 Plus
PARUM2
2025
2030
2014
221-48398-91 20 For HT high temperature, brown, low bleed, 450℃ max., low bleed under a high temperature and highly durable TQ8040
TQ8050
TQ8030
QP2020
QP2010 Ultra
QP2010 SE
QP2010
QP2010 Plus
PARUM2
2025
2030
2014
221-76650-01 25 Thermogreen LB-2, green, low bleed, least amount of plasticizing agent TQ8040
TQ8050
TQ8030
QP2020
QP2010 Ultra
QP2010 SE
QP2010
QP2010 Plus
PARUM2
2025
2030
2014

Guide to select an injection port septum

Even when a low bleed septum is used, bleeding is not totally eliminated. The type of bleeding differs according to the septum type and bleeding appears as different peaks on a chromatogram. In high-sensitivity analysis, you need to select and use a septum that does not cause bleeding at a position where interference occurs with the target compound.
Use the information below as a guide.

Injection unit temperature is high (250 to 450℃). Low bleed (high-sensitivity analysis) Septum for HT high temperature
Low bleed septum is not required. Long-life septum
Injection unit temperature is lower than 250℃. Low bleed (high-sensitivity analysis) septum is required and durability is also important. Long-life septum
Small amount of plasticizing agent regardless of the injection unit temperature Thermogreen LB-2 septum

Supplementary keywords: septum, insert, ferrule, O-ring, Gas chromatograph, GC, GC-14A, GC14A, GC-14B, GC14B, GC-17A, GC17A, GC-1700, GC1700, GC-2010, GC2010, LL septum, HT septum, bleeding, Supelco