BGI Gas Sampling Bags, Zero Head Space Septum, BGI swivel lock |
The most significant improvement in bag valves yet conceived, is the patented BGI "SWIVEL LOCK". Its unique stainless steel construction, absolutely prevents leakage to the ambient environment. Other valves have the potential of leaking in the filling or emptying position. Any standard 1/4 inch I.D. Tubing is compatible with the barbed fitting on the valve. Due to the single barb design, a 1/4 inch compression fitting may also be utilized.
The removal of a gas sample from a filled bag can be difficult to accomplish without contamination from the ambient environment. This may now be accomplished with complete confidence by using the BGI Zero Head Space Septum.
The BGI zero head space septum is completely separate from the filling valve. It is fabricated from stainless steel for maximum inertness and utilizes a two-part septum. The surface in contact with the gas is fabricated from a thin Teflon film. This film is molded to a silicone rubber septum which will completely seal multiple needle punctures. |
Valve in open position |
Valve in closed position
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Zero head space septum
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Features:
- All Stainless Steel Valve Construction
- Customer Choice of Viton® or Teflon Seals
- Valve is Designed to Vent Sampling Lines Prior to Sampling - ONLY Undiluted Sample Emitted to the Bag
- 1New Patented Stem Design Permits Alternative Use of Elastomeric Tubing or Compression Type Fittings
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Applications:
- Soil Gas Sampling
- Air Pollution Sampling
- Source Testing -- EPA TCLP Method
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<<<Teflon Bags>>> |
| Teflon is inert to virtually all chemicals and will permit sampling at temperatures up to 450 F. |
| Chemical Properties -- 5 Mil Teflon |
| Chemical Resistance |
Resistant to pratically all chemicals except flourine at temperatures above 200 deg. C, molten alkali metals and certain complex halogenated compounds. |
| Moisture Resistance |
Less than 0.01 percent |
| Weatherability |
Inert Outdoors |
Gas Permeability
(Units: cc/sec/cm2/cm/cm Hg x 10-10 @ 25 deg. C) |
| Hydrogen |
14 |
Helium |
40 |
| Nitrogen |
2.15 |
Oxygen |
5.90 |
| Carbon Dioxide |
1.70 |
Methane |
1.08 |
Vapor Permeability
(Units: cc/sec/cm2/cm/cm Hg x 10-10 @ 40 deg. C) |
| n-Hexane |
0.78 |
Benzene |
0.86 |
| Carbon Tetrachloride |
0.24 |
Acetone |
1.8 |
| Ethyl Alcohol |
0.16 |
Acetic Acid |
0.84 |
| Water |
165 |
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| Ordering Information |
| Catalog No. |
Size1,
Inches |
Nominal
Capacity,
Liters |
| TE1 |
6 x 6 |
0.5 |
| TE2 |
6 x 12 |
1.5 |
| TE3 |
6 x 9 |
1.0 |
| TE4 |
9 x 12 |
3.0 |
| TE5 |
12 x 12 |
5.0 |
| TE6 |
12 x 18 |
8.0 |
| TE7 |
12 x 24 |
12.0 |
| TE8 |
18 x 24 |
25.0 |
| TE9 |
24 x 24 |
45.0 |
| TE10 |
24 x 36 |
80.0 |
| TEV |
Additional Valve |
| TEZ |
Zero Head Space Septum |
| 1Dimensions include seams, subtract 1/2 inch for each seam. |
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<<<Tedlar Bags>>>
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Tedlar is a DuPont product manufactured from PVF film. It is produced without plasticizers thereby eliminating the outgassing problem common with other materials. The sizes from stock are listed below. Custom sizes are also available. Other options are additional valve and relocation of valve.
| Ordering Information |
| Part No. |
Size1,
Inches |
Nominal
Capacity,
Liters |
Valve
Only |
Valve with
Zero Head
Space Septum |
| SC1 |
6 x 6 |
0.5 |
SC1V |
SC1VZ |
| SC2 |
6 x 12 |
1.5 |
SC2V |
SC2VZ |
| SC3 |
6 x 9 |
1.0 |
SC3V |
SC3VZ |
| SC4 |
9 x 12 |
3.0 |
SC4V |
SC4VZ |
| SC5 |
12 x 12 |
5.0 |
SC5V |
SC5VZ |
| SC6 |
12 x 18 |
8.0 |
SC6V |
SC6VZ |
| SC7 |
12 x 24 |
12.0 |
SC7V |
SC7VZ |
| SC8 |
18 x 24 |
25.0 |
SC8V |
SC8VZ |
| SC9 |
24 x 24 |
45.0 |
SC9V |
SC9VZ |
| SC10 |
24 x 36 |
80.0 |
SC10V |
SC10VZ |
| SC11 |
24 x 48 |
120.0 |
SC11V |
SC11VZ |
| SCV |
Additional Valve |
| SCZ |
Zero Head Space Septum |
| 1Dimensions include seams, subtract 1/2 inch for each seam. |
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