DIRT CONTENT

Dirt content Dosing units for deter- Macro Non MST UD... 

Dirt content of clothes for automatic wash detergent control... 

The laundering process will become more energy-efficient and use less water and adequate low amount of detergent. It will be more or less automatically adapted to the types of textiles, the washing program, dirt content, wash load, to temperature levels accepted and the detergents used, using sophisticated electronic control systems. 

As the hydraulic motor turns, a back-flush stream resulting from the reduced pressure sucks dirt from the mesh screen and through the motor s collection nozzles. The combined dirt stream and rinse water are ejected from the motor s rotary nozzles, scouring the entire screen surface and removing all traces of dirt. The rinse cycle is automatic, occurring at time intervals relative to the dirt content of the water. Each cycle takes only a few seconds and does not interrupt normal water flow. 

Control of dirt and other particles involves use of a membrane filtration method (ASTM D-2276, IP 216) in which the dirt retained by filtration of a sample through a cellulose membrane is expressed as weight per unit volume of the fuel. This test provides field quality control of dirt content and can be supplemented by a visual assessment of membrane appearance after test against color standards (ASTM D-3830). However, no direct relationship exists between particulate content weight and membrane color, and field experience is required to assess the results by either method. 

An analytical procedure (ASTM D-128) is available for the separation of grease into its component parts and their measurement. Spectrographic methods, such as flame photometry (ASTM D-3340), may also be used to determine the metal present as soaps or the wear elements in used grease, in conjunction with separation techniques to measure and identify the various types of fats, lubricating fluids, or additives present. The simpler tests that are more likely to be quoted are ash content, acidity and alkalinity, water, and dirt content. 

The cover-glass preparations not only show bacteria but also are ideal for grading the milk as to insoluble dirt content. 

Solution adhesive is obtained from solid rubber obtained by coagulation of latex as acquired from the tree. The coagulation is effected by dilute aqueous solution of organic acids. The solid rubber can be graded in terms of dirt content, ash content, nitrogen content, and volatile matter. It can also be categorized by plasticity retention index and Mooney viscosity. To maintain uniformity it is necessary to choose solid natural rubber of known characteristics. 

NR suffers from inconsistent properties. Multiple stages of handling and transportation, and proeesses, are subject to contamination of NR latex (Figure 1.5). The grading of NR was correlated with a visual inspection of its dirt content in early years. Uniformity and purity of NR latex and dry NR as the commodity materials are overcome by introduction and enforcement of conformity of NR to strict technical specifications, e.g. Standard Malaysian Rubber (SMR, introduced in 1965 and revised in 1973 and 1991), Standard Thailand Rubber (STR), Standard Indonesian Rubber (SIR) and Standard Vietnam Rubber (SVR). Under SMR, tolerable amounts of nitrogen, dirt, volatile matter, copper and manganese are specified. STR, SIR and SVR are prepared based on SMR. 

For synthetic polymers, dirt content is seldom an issue although there are occasions when the odd piece of the polymerisation plant may appear as an inclusion in a polymer bale. The source of all polymers, and other ingredients, should be assessed on the basis by which the process is controlled and monitored. Incoming batches should be accompanied with test certificates that are routinely checked for conformity to an agreed specification. The latter may be in accord to the supplier s general specification or a special agreement to meet process demands within the user s factory. 

Disinfectant formulations based on OPP take the poor water solubility of OPP into consideration. Anionic surfactants and soaps are used preferably to a limited extent (below the critical micellization concentration) non-ionic surfactants may be used, too. The rule that the microbicidal effect of phenolic compounds is dependent on such factors as the pH of the ready-to-use dilution, degree of contamination/germ count, water hardness and dirt content applies to OPP, too. The bactericidal effect of a standard formulations (SF) containing 10% OPP -f25% sec. alkanesulphonate +20% isopropanol +45% demineralized water is documentated in Table 71 by the lethal active concentrations of OPP (mg/1) for various species of bacteria in dependence of pH, on protein loading and on a high germ count (approx. lO germs per ml solution to be disinfected). 

As with centrifugal pumps, fans require stable inlet conditions. Ductwork should be configured to ensure an adequate volume of clean air or gas, stable inlet pressure, and laminar flow. If the supply air is extracted from the environment, it is subject to variations in moisture, dirt content, barometric pressure, and density. However, these variables should be controlled as much as possible. As a minimum, inlet filters should be installed to minimize the amount of dirt and moisture that enters the fan. 

Technically specified rubber grades of natural rubber used today by the industry are given in ASTM D2227. Commonly, these grades of natural rubber are based on dirt content. The more dirt removed from the natural rubber at the processing plant means the better price the natural rubber will receive in the marketplace. For exam-... 

This condition causes the rigid demands shown to industrial atmospheric emissions and dirt content in a free air. Performance of these demands is monitored by special services of the factories, and also departmental and state structures a way, and detail, determination of conformity of measured parameters to regulated magnitudes of maximum concentration limit and a maximum permissible emission. 

As more paper substrates take on more recycled content, It Is typical for these papers to have what Is known as dirt content . These foreign particles can be visible at the paper surface to the eye and can compose bark, conductive rust, plastic, and other particles. These surface and bulk contaminations are typically quantifiable as part per million (ppm), or mmym. Both nonconductive and conductive particles in the bulk and on the surface of papers can influence the choice and performance of certain plasma surface modification techniques. 

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