-
Supplier: ASTM International
Description: 1.1 This test method covers a standard procedure for the determination of group type totals of aromatic, polyaromatic, and FAME content in diesel fuel using gas chromatography and vacuum ultraviolet absorption spectroscopy detection (GC-VUV). 1.1.1 Polyaromatic totals are the result of
-
Supplier: ASTM International
Description: 1.1 This test method covers a standard procedure for the determination of group type totals of saturate, aromatic, polyaromatic, and FAME content in diesel fuel using gas chromatography and vacuum ultraviolet absorption spectroscopy detection (GC-VUV). 1.1.1 Polyaromatic totals are the
-
Description: -filled cables and oil-filled tank-type capacitors are no longer covered by this document, but are instead described in IEC 60475:2022, 4.2. Before analysing the gases dissolved in oil, they are first extracted from the oil. Three basic methods are described, one using extraction by vacuum
-
-
Description: first extracted from the oil. Three basic methods are described, one using extraction by vacuum (Toepler and partial degassing), another by displacement of the dissolved gases by bubbling the carrier gas through the oil sample (stripping) and the last one by partition of gases between the oil
-
Supplier: OMEGA Engineering, Inc.
Description: positioned at inlets (bottom) for liquids valves may be positioned either at inlets or outlets (top). For vacuum services, valves must be mounted at outlets. If unspecified at the time of ordering, meters will be shipped with valves mounted at the inlets.
- Liquid Volumetric Flow Rate: 1.32E-4 to 0.4500 GPM
- End Fittings: Threaded
- Media Temperature Range: 250 F
- Mounting Type: In-line
-
Supplier: Pickering Laboratories, Inc.
Description: -alone frequency controlled vacuum pump and vacuum control; 100-110 VAC, 60 Hz. Column, rack, accessories are quoted separately. Gel permeation chromatography is a well-known technology for the removal of fats, proteins, and other large bio-molecules from samples in order to
-
Supplier: Traceable® Products
Description: Compact, variable-flow, bi-directional, self-priming, peristaltic pumps offer precise flow deliveries. Ideal for use with conductivity flow-thru cells, liquid chromatography, collecting fractions, pH/circulating fluids or buffers in baths, and moving corrosive materials. They provide
- Housing Material: Plastic
- Maximum Discharge Flow: 0.0022 GPM
- Media Temperature: 500 F
- Power Source: AC Powered
-
Supplier: Traceable® Products
Description: Compact, variable-flow, bi-directional, self-priming, peristaltic pumps offer precise flow deliveries. Ideal for use with conductivity flow-thru cells, liquid chromatography, collecting fractions, pH/circulating fluids or buffers in baths, and moving corrosive materials. They provide
- Housing Material: Plastic
- Maximum Discharge Flow: 0.6250 GPM
- Media Temperature: 200 F
- Power Source: AC Powered
-
Supplier: ASTM International
Description: determining the efficiency of a distillation column, under total reflux conditions using the test mixture n-heptane/methylcycl ohexane at atmospheric pressure. 1.7 The efficiency is not measured under vacuum conditions because there is no satisfactory test mixture that has a constant
Find Suppliers by Category Top
Featured Products Top
-
. According to ASTM member Dan Wispinski, laboratory manager at InnoTech Alberta, the new standard is the first to describe the use of the new vacuum ultraviolet (VUV) detector in gas chromatography analysis. Specifically, the standard will soon be published as D8071: Test Method (read more)
Browse Standards and Technical Documents Datasheets for ASTM International -
Infrared Optical Systems Ceramic Components for an Oil Field Fracking System Sapphire Detector Tubes for High Pressure Liquid Chromatography Missile Cones Titanium Carbide Disks for Ultrasonic (read more)
Browse Datasheets for Insaco, Inc.
More Information Top
Indicates content that may require registration and/or purchase.
-
Natural Products Isolation
These fractions may be obvious, physically discrete divisions, such as the two phases of a liquid–liquid extraction (see Chap. 10) or they may be the contiguous eluate from a chromatography column, e.g., vacuum liquid chromatography (VLC), column chromatography (CC), size-exclusion …
-
http://repository.up.ac.za/bitstream/handle/2263/29224/dissertation.pdf?sequence=1
6.2.3 Column chromatography by vacuum liquid chromatography (VLC) 77 6.2.4 Gravity based column chromatography packed with silica gel..
-
Purification of citrus limonoids and their differential inhibitory effects on human cytochrome P450 enzymes
Major aglycones such as limonin and nomilin were isolated from seeds by direct crystallization and minor limonoids were purified by vacuum liquid chromatography .
-
Chemopreventive Potential of Flavonoid Extracts from Plantation‐Bred and Wild Aronia melanocarpa (Black Chokeberry) Fruits
ABSTRACT: European plantation‐bred (cultivated) and local Illinois (wild) Aronia melanocarpa (chokeberry) fruits were extracted with 70% aqueous acetone and separated into 6 fractions using vacuum liquid chromatography (VLC) over a Toyopearl (TP) polymer column.
-
The vasodepressor function of the kidney: prostaglandin E2 is not the principal vasodepressor lipid of the renal medulla
Methods: A chloroform extract of porcine kidney medulla was fractionated by gradient vacuum liquid chromatography (VLC) and analysed by capillary GC‐MS for the presence of prostaglandins (detection limit: 2.2 ppm).
-
Natural Products Isolation
Complex extracts can,in the first instance, be separated by vacuum liquid chromatography , flash chroma- tography, or column chromatography prior to PTLC.
-
http://repository.up.ac.za/bitstream/handle/2263/30601/dissertation.pdf?sequence=1
Vacuum liquid chromatography Wat .
-
Combination of Bioautography with HPTLC–MS/NMR: A Fast Identification of Acetylcholinesterase Inhibitors from Galbanum †
Method Pre‐fractionation of the dichloromethane extract was performed by vacuum liquid chromatography .
-
Anti‐inflammatory Activities of Eleven Centaurea Species Occurring in the Carpathian Basin
The n-hexane extract (CSE-3) was further fractionated by vacuum liquid chromatography on silica gel (SiO2 60 G, 15 mm, Merck 11677), using the gradient system of n-hexane – EtOAc – MeOH of increasing polarity gaining the fractions CSE-3 …
-
The use of silica gel coated with liquid paraffin as a stationary phase for chromatographic analysis of phytochemicals
(i) Vacuum liquid chromatography : A 3X 5 cm diameter bed of the silica gel coated with liquid paraffin was made using water to form a slurry, and vacuum liquid chromato- graphy carried out using the standard procedure (Pelletier et al., 1986).