Valve is inert, industry standard polypropylene.
Locking Combo^® is a registered trademark of Jensen Inert Products, Inc.
Swagelok^® is a register trademark of Swagelok, Inc.
Jaco^® is a registered trademark of Jaco Manufacturing, Inc.
HR^® is a registered trademark of Halkey Roberts, Inc.
Tedlar^® is a registered trademark of E.I. Dupont

Catalog Number: SEP5007NSCV7010, Fluoropolymer Faced 0.070" Thick Septa, For Screw Cap Valve/10

• On/off valve function with replaceable septum in a single unit.
• Lightweight.
• Made of Inert polypropylene.
• Quick turning screw cap to open and close valve. Cap stop limits amount cap can be opened.
• Visual confirmation that valve is open or closed.
• Replaceable fluoropolymer faced, low bleed septum.
• Designed and manufactured by Jensen Inert Products.

• ALTEF is a proprietary fluoropolymer film developed specially for the air sampling market.
• ALTEF meets or exceeds many of the desired characteristics of Tedlar®.
• Unlike Tedlar®, ALTEF does not exhibit background levels of DMAC and phenol.
• ALTEFexhibits similar stability properties as Tedlar® for a wide variety of compounds, including most VOCs.
• Low VOC and sulfur background levels.
• Contains no additives, fillers or pigments.
• Minimal adsorption.
• Superior storage for organics.
• Abrasion Resistant.

• Before use, thoroughly flush bags with ultra-pure nitrogen or zero air
• During sampling, Fluoropolymer tubing and Fluoropolymer faced septums must be used in order to prevent sample loss.
• Bags should not be filled to more than 80% of their maximum volume.
• Charcoal (Black) Tedlar^® bags should be used when sampling light sensitive compounds
• Do not store compounds in bags long term due to the possibility that chemicals may adsorb onto the bag surface.
• Bags should not be used to collect reactive or unstable compounds.
• When shipping bags, do not air-ship unless the bags are stored in a pressurized area.

• Developed specifically for gas sampling applications
• Chemically inert to most acids, aliphatic and aromatic organic compounds, chlorinated solvents, and alcohols
• Maximum operating temp: 260 ºF
• ALTEF bags are made of 0.003" thick film.
• Tensile Strength 6100 psi

• Suitable for sampling most VOCs and many sulfur compounds
• Low VOC background
• Longer sample storage times than most other bag materials
• Does not exhibit background levels of DMAC or phenol, as Tedlar^® does
• Lower permeability than Tedlar^® to CO₂, N₂, CH₄
• Superior resistance to solvents

• More permeable to most compounds than Tedlar^® (0.003" thick versus 0.002" for Tedlar^® Bags)
• Not suitable for sampling ketones and esters in high concentrations (>30 %)
• Less resistance to UV light than Tedlar^®
• Many sulfur compounds should be analyzed within 24 hours.
• More expensive than Tedlar^®

• Economical: Cost savings in manufacturing is passed on to customers. Septum can be changed.
• Reduces shipping costs. Easier to carry in the field.
• Ensures purity of sample and non-contamination.
• Quick, easy opening and closing of valve: saves time. Cap stop leaks from opening cap too far.
• Prevents accidental sample loss. No guessing whether valve is open or closed.
• Allows reuse of valve by replacing inexpensive septum.
• Designed specifically for gas sampling applications.

• Economical: Cost savings in manufacturing is passed on to customers.
• Reduces shipping costs. Easier to carry multiple bags into the field.
• Ensures purity of sample and non contamination.
• Quick, easy opening and closing of valve (< 1 second).
• Faster than "twist action" valves.
• Locked position is easy to verify visually, and prevents accidental sample loss during shipment. Virtually impossible to open or close valve to far.
• Septum does not come into contact with sample inside bag. Septum allows repeated punctures with syringes without leakage. Ultra low bleed silicone prevents contamination.
• Designed specifically for gas sampling applications.