EPA/VOA

Specialty Silicone Products (SSP) supplies EPA/VOA septa with or without caps that are either fitted or bonded. Our very clean silicone septa meets a requirement from the U.S. Environmental Protection Agency (EPA) for low siloxane bleed. If siloxanes contaminate a sample during gas chromatography (GC) or liquid chromatography, the chromatogram may contain ghost peaks that interfere with analysis. 

To avoid septum bleed, SSP uses platinum-cured silicones. In this way, our septa supports the accuracy of volatile organic analysis (VOA), a series of laboratory techniques for identifying and measuring volatile organic compounds (VOCs). 

VOCs include a variety of chemicals, some of which have adverse effects upon human health. During soil and water testing, it’s important to avoid septa that can introduce contaminants such as siloxanes, fluorinated compounds, acetones, and various solvents. Otherwise, the septa may introduce the very contaminants for which VOA is searching. 

SSP supplies three main types of standard EPA/VOA products: stand-alone septa, septa that’s fitted to caps, and septa that’s bonded to caps. Stand-alone septa is not fitted or bonded to caps for EPA/VOA vials. Septa that’s fitted to caps is assembled, but not bonded. Finally, bonded caps and septa use a proprietary process to bond the cap cleanly and without affecting the septa’s low-bleed properties. 

See the product tables below for more information about standard EPA/VOA septa from SSP. In addition to standard products, we can supply custom septa that meets your specific requirements. To get started, click any of the Custom Septa buttons below. All our septa is Made in the USA at our Ballston Spa, New York facility.

Features

  • Strong bonds to caps
  • Made to order, custom septa available
  • Conditioned for ultra-low bleed
  • Soft, strong premium silicone
  • Born-on date on each package

Benefits

  • Septa can’t fall into the vial
  • Reduced handling, less contamination
  • No interfering peaks
  • Easy needle penetration, resealable
  • Easy to control and identify inventory

Assembled Caps & Septa for EPA/VOA Vials

  • Description
    Product ID
  • ST2060 .125” Thick, Natural PTFE/ Clear Extreme Ultra Low Bleed Silicone inserted into a White 24-414 Open Top Screw Cap. Bags of 500
    0700-2410-D
  • ST2060 .125” Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Inserted into a Black 24-414 Open Top Screw Cap. Bags of 100
    0700-2402-C
  • ST2060 .125” Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Inserted into a Black 24-414 Open Top Screw Cap. Bags of 500
    0700-2402-D
  • ST2060 .125” Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Inserted into a White 24-400 Open Top Screw Cap. Bags of 100
    0700-2610-C
  • ST2060 .125” Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Inserted into a White 24-400 Open Top Screw Cap. Bags of 500
    0700-2610-D
  • ST2060 .125” Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Inserted into a White 24-414 Open Top Screw Cap. Bags of 100
    0700-2410-C
  • ST2078 .125” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Inserted into a Black 24-414 Open Top Screw Cap. Bags of 100
    0720-2402-C
  • ST2078 .125” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Inserted into a Black 24-414 Open Top Screw Cap. Bags of 500
    0720-2402-D
  • ST2078 .125” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Inserted into a White 24-414 Open Top Screw Cap. Bags of 500
    0720-2410-D
  • ST2078 .125” Thick, Natural PTFE/ Clear Ultra Low Bleed Silicone inserted into a White 24-400 Open Top Screw Cap. Bags of 100
    0720-2610-C
  • ST2078 .125” Thick, Natural PTFE/ Clear Ultra Low Bleed Silicone inserted into a White 24-400 Open Top Screw Cap. Bags of 500
    0720-2610-D
  • ST2078 .125” Thick, Natural PTFE/ Clear Ultra Low Bleed Silicone inserted into a White 24-414 Open Top Screw Cap. Bags of 100
    0720-2410-C

Bonded Caps & Septa for EPA/VOA Vials

  • Description
    Product ID
  • ST2060 .060" Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Bonded into a Black 24-414 Open Top Screw Cap. Bags of 100
    0706-2402B-C
  • ST2060 .060" Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Bonded into a Black 24-414 Open Top Screw Cap. Bags of 500
    0706-2402B-D
  • ST2060 .060" Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Bonded into a White 24-400 Open Top Screw Cap. Bags of 100
    0706-2610B-C
  • ST2060 .060" Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Bonded into a White 24-400 Open Top Screw Cap. Bags of 500
    0706-2610B-D
  • ST2060 .060" Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Bonded into a White 24-414 Open Top Screw Cap. Bags of 100
    0706-2410B-C
  • ST2060 .060” Thick, Natural PTFE/ Clear Extreme Ultra Low Bleed Silicone Bonded into a White 24-414 Open Top Screw Cap. Bags of 500
    0706-2410B-D
  • ST2060 .125” Thick, Natural PTFE/ Clear Extreme Ultra Low Bleed Silicone Bonded into a White 24-400 Open Top Screw Cap in Bags of 500
    0700-2610B-D
  • ST2060 .125” Thick, Natural PTFE/ Clear Extreme Ultra Low Bleed Silicone Bonded into a White 24-400 Open Top Screw Cap. Bags of 100
    0700-2610B-C
  • ST2060 .125” Thick, Natural PTFE/ Clear Extreme Ultra Low Bleed Silicone Bonded into a White 24-414 Open Top Screw Cap. Bags of 100
    0700-2410B-C
  • ST2060 .125” Thick, Natural PTFE/ Clear Extreme Ultra Low Bleed Silicone Bonded into a White 24-414 Open Top Screw Cap. Bags of 500
    0700-2410B-D
  • ST2060 .125” Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Bonded into a Black 24-414 Open Top Screw Cap. Bags of 100
    0700-2402B-C
  • ST2060 .125” Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Bonded into a Black 24-414 Open Top Screw Cap. Bags of 500
    0700-2402B-D
  • ST2078 .060” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Bonded into a Black 24-414 Open Top Screw Cap. Bags of 100
    0726-2402B-C
  • ST2078 .060” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Bonded into a Black 24-414 Open Top Screw Cap. Bags of 500
    0726-2402B-D
  • ST2078 .060” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Bonded into a White 24-400 Open Top Screw Cap. Bags of 100
    0726-2610B-C
  • ST2078 .060” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Bonded into a White 24-400 Open Top Screw Cap. Bags of 500
    0726-2610B-D
  • ST2078 .060” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Bonded into a White 24-414 Open Top Screw Cap. Bags of 100
    0726-2410B-C
  • ST2078 .060” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Bonded into a White 24-414 Open Top Screw Cap. Bags of 500
    0726-2410B-D
  • ST2078 .125” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Bonded into a Black 24-414 Open Top Screw Cap. Bags of 100
    0720-2402B-C
  • ST2078 .125” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Bonded into a Black 24-414 Open Top Screw Cap. Bags of 500
    0720-2402B-D
  • ST2078 .125” Thick, Natural PTFE/ Clear Ultra Low Bleed Silicone Bonded into a White 24-400 Open Top Screw Cap. Bags of 100
    0720-2610B-C
  • ST2078 .125” Thick, Natural PTFE/ Clear Ultra Low Bleed Silicone Bonded into a White 24-400 Open Top Screw Cap. Bags of 500
    0720-2610B-D
  • ST2078 .125” Thick, Natural PTFE/ Clear Ultra Low Bleed Silicone Bonded into a White 24-414 Open Top Screw Cap. Bags of 100
    0720-2410B-C
  • ST2078 .125” Thick, Natural PTFE/ Clear Ultra Low Bleed Silicone Bonded into a White 24-414 Open Top Screw Cap. Bags of 500
    0720-2410B-D

Septa ONLY for EPA/VOA Vials

  • Description
    Product ID
  • ST2060 .060" Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Cut to .880” Diameter to fit 24-414 or 24-400 Screw Cap. Bags of 100
    0706-0880-C
  • ST2060 .060” Thick, Natural PTFE/ Clear Extreme Ultra Low Bleed Silicone cut to .880” Diameter to fit 24-414 or 24-400 Screw Cap. Bags of 1000
    0706-0880-M
  • ST2060 .125” Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Cut to .880” Diameter to fit 24-414 or 24-400 Screw Cap. Bags of 100
    0700-0880-C
  • ST2060 .125” Thick, Natural PTFE/ Clear Silicone - Extreme Ultra Low Bleed Cut to .880” Diameter to fit 24-414 or 24-400 Screw Cap. Bags of 1000
    0700-0880-M
  • ST2060 .125” Thick, Natural PTFE/ Clear Ultra Low Bleed Silicone cut to .880” Diameter to fit 24-414 or 24-400 Screw Cap in Bags of 100
    0720-0880-C
  • ST2060 .125” Thick, Natural PTFE/ Clear Ultra Low Bleed Silicone cut to .880” Diameter to fit 24-414 or 24-400 Screw Cap in Bags of 1000
    0720-0880-M
  • ST2078 .060” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Cut to .880” Diameter to fit 24-414 or 24-400 Screw Cap. Bags of 100
    0726-0880-C
  • ST2078 .060” Thick, Natural PTFE/ Clear Silicone - Ultra Low Bleed Cut to .880” Diameter to fit 24-414 or 24-400 Screw Cap. Bags of 1000
    0726-0880-M

News

Ultra-low bleed silicones for septa promote analytical purity and prevent ghost peaks on chromatographs. To avoid septum bleed, Specialty Silicone [...]

Contact Us

SSP Companies
Corporate Technology Park, 3 McCrea Hill Road
Ballston Spa, NY 12020

Toll Free: (800) 437-1442
Ph: (518) 885-8826

Custom Septa

SeptaSource.com has one of the largest ranges of dies, molds, caps and silicone formulations to create just about any septa or septa/cap combination imaginable. Use the simple Custom Septa Selector and send your request to us and we will get back to you.