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Description: has virtually no effect on the composition of the solvent. In addition, this method is highly efficient, yielding results similar to that of degassing by the helium sparging method.
- Degasser Type: Flow Degasser
- Number of Channels: 4
- Display Type: Video Display
Densometers and Porosimeters - Surface Area and Pore Size Gas Sorption Analyzers -- NOVAtouch™ SeriesSupplier: Quantachrome Instruments
Description: from new dosing algorithms and additional pressure transducers. Continuous Po measurements improve precision and resolution for detailed pore size analyses. Cold zone volume minimization yields superior analysis sensitivity using an advanced level sensor. Sample degassing capabilities now include full
- Property Analyzed: Porosimetry / Pore Volume, Pore Distribution
- Test Media / Material: Ceramics / Glass, Food / Drugs, Metals, Porous Materials (Filters, Foam, etc.), Powders / Granular Materials, Soil
- Display & Special Features: Computer Interface / Networkable, Graphic / Video Display, Laboratory / Batch
Supplier: Western Analytical Products
Description: from HPLC mobile phases. The unique design of the modules assures reliable continuous oper ation and the highest level of continuous performance available, thus eliminating the need for helium degassing. depending on the model, two to four solvent lines may be degassed simultaneously by one unit
- Filter Type: Pre-Filter
- Hold Up Volume: 0.1268 gallons
Supplier: VACUUBRAND, Inc.
Description: High vacuum, helium leak-tested right angle valves VE have stainless steel bellows which seals the drive mechanism without any gap on the vacuum. Due to the screw-thread mechanism, these valves offer a certain control of conductance and are mountable in any position because of their air tightness
- Types: Angle Valve
- Port Size / OD: 1.57 inch
- Vacuum / Pressure Range: Rough / Low (< 760, > 1 torr), Medium (< 1, >10-3 torr), High Vacuum (<10-3,>10-8 torr), Ultra-high Vacuum (< 10-8 torr)
- Port Flange / Fitting Type: Elastomeric Seal / O-ring
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The Noble Gases as Geochemical Tracers
1998) Helium degassing related to the Kobe earthquake.
Relationship between Helium Degassing of Cattle-Manure-Compost Adsorbents and Copper Ions Removal .
Continental degassing flux of 4 He and its variability
The statistics can be interpreted as reflecting natural variability and suggest that the mechanisms transporting the crustal helium degassing flux contain a high degree of both spatial and temporal variability.
Natural laboratory NW Bohemia: Comprehensive fluid studies between 1992 and 2005 used to trace geodynamic processes
Sano, Y., N. Takahata, G. Igarashi, N. Koizumi, and N. C. Sturchio (1998), Helium degassing related to the Kobe earth- quake, Chem. Geol., 150, 171–179, doi:10.1016/S0009- 2541(98)00055-2.
ADVANCES IN LIQUID CHROMATOGRAPHY: 35 YEARS OF COLUMN LIQUID CHROMATOGRAPHY IN JAPAN
degassing and helium degassing .
Zindler and Hart (1986) have suggested that exhalative helium degassing accompanying saturation of carbon dioxide may increase the U/He ratio of a magma, leading to decreases in its 3He/4He ratio over times ranging 5 .
Engineered Zinc Finger Proteins
Lysis buffer: Freshly helium degassed 50 mM 3-(N- morpholino)-propanesulfonic acid (MOPS), pH 7.0, 300 mM NaCl, and 0.5 % Triton X-100 (used in prepara- tive samples only).
Helium isotopes on the Pacific‐Antarctic ridge (52.5°–41.5°S)
… the possibility that the difference in the mean helium isotopic ratio between the two ridge segments reflects different mantle histories, including degassing or depletion during melting, we have developed a simple mantle evolution model that considers helium degassing and radiogenic production of …
: The Hiroshi Wakita Volume III
SANO, Y., TAKAHATA, N., IGARASHI, G., KOIZUMI, N., and STURCHIO, N.C. (1998), Helium degassing related to the .
For atmospheric helium, model results were consistent with present day atmospheric values, assuming complete helium degassing from the continental crust into the atmosphere.