Cartridge concept

Although the balance feature, o-rings, and the cartridge concept were discussed in detail in the previous chapter, here is a brief review why this seal design will give your pumps their best chance for extended leak-free service with reduced maintenance costs. 

The Cartridge Concept - has every component part of the sealing system in one unit. They re easier and faster to install and don t require total pump teardown. Most come with additional control ports and rebuild kits. 

R. Wisnieff D. Longo, Laser Cartridge Concept Development Study , Rept No ECOM-74-0376-F, Contract DAAB07-74-C-0376, United Technologies Corp, Norwalk (1976)... 

Throughout the war the popular conception of the laymen was that the army needed an explosive cartridge. Numerous types were submitted for test, none was adopted"... 

Direct Methanol Fuel Cell (DMFC) A new energy concept for mobile electronic devices such as laptops and cell phones. Toshiba, the pioneer in this field, has exhibited tiny DMFCs capable of delivering up to 300 milliwatts for up to 35 hours of operation. A fuel cartridge can be replaced on an as-needed basis. 

Today, sportsmen use the concept of primary ignition to detonate extremely stable cartridge powders without giv-... 

Therefore, minimal sample handling is advisable. In order to overcome the problem of limited sample loading, Guzman conceived and demonstrated the concept of on-line preconcentration with CE using a cartridge containing a bed of adsorptive phase (5). In the present work we describe the use of nonspecific on-line preconcentration-CE, on-line immunoaffinity-CE (lA-CE) and on-line microreactor enzyme digestion-CE for the analyses of proteins. 

The laboratory setup used to study this concept is shown in Figure 71. The distillation column, 30 mm I.D., consisted of a tray section in the bottom and four packed sections, each of the latter loaded with nine cartridges of type SULZER EX. The column was energized by an oil-heated falling film evaporator featuring a hermetic circulation pump. The distillate of the extractive distillation column of chapter 16.6.1 was introduced below the two uppermost SULZER columns, while hexane was introduced one SULZER section below the feed inlet. Between the bottom tray section and the lowermost SULZER section, the diketones were withdrawn as a vapor. 

Fig. 1 Coat hanger-type sheet die concept (A) (1) central inlet port (2) manifold (distributes melt) (3) island (along with manifold, provides uniform pressure drop from inlet to die lip (4) die lip (die exit forms a wide slit) and schematic of sheet die (B) (1) upper die plate (2) lower die plate (3) manifold (4) island (5) choker bar (6) choker bar adjustment bolt (7) flex die lip (8) flex lip adjustment bolt (9) lower lip (10) die bolt (11) heater cartridge.

Meanwhile, the use of bonded reversed-phase columns in HPLC was common, and there were applications for the concentration of organic solutes directly onto the head of the HPLC columns with the term trace enrichment being used for this process (Little and Fallick, 1975). However, interferences also concentrated at the head of the column, such as proteins in biological samples and humic substances in water samples thus, column life was greatly shortened. The answer was a small precolumn positioned ahead of the analytical column to retain contaminants or to retain analytes in trace enrichment. The concept of the precolumn quickly led to the use of separate or off-line low-pressure SPE cartridges. 

A fuUy automated machine was developed and commercialized by Pharmacia-LKB, Cambridge Research Biochemical, MUliGen, duPont, and Applied Biosystems. See also Atherton E, Sheppard RC (1989) Solid phase peptide synthesis. IRL, Oxford, p 100 a flowthrough concept based on membranes incorporated into a cartridge was disclosed by Daniels B, Bernatowicz MS, CouU JM, Koster H (1989) Tetrahedron Lett 30 4345... 

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