Testing methods particle size analysis

Figure 1.13 Sieve test method for particle size analysis...

Anticipated problems and counter measures for the listed protocols have been included in individual steps of the basic protocols. In addition, a detailed troubleshooting section for particle size analysis can be found in unit d.u however, the difficulty of properly conducting accelerated tests should again be stressed. While the method is extremely useful, as it can drastically reduce the required time for the overall test, results may not accurately reflect... 

NF 11 -661 Test methods for particle size analysis-Determination of particle size of powders-Optical microscope, 144... 

ASTM C285-88 (Re-approved 1994) Standard test method for sieve analysis of wet milled and dry milled porcelain enamel, for determination of the fineness of frit in wet-or dry-milled porcelain enamels and other ceramic coatings on metals by use of the number 200 or No 325 mesh, 212 ASTM C925-79 (Re-approved 1995) Standard test method for precision electroformed wet sieve analysis of non-plastic ceramic powders, for particle size distribution determination ofpulverized alumina and quartz for particle sizes from 45 pm to 5 pm by wet sieving, 212, 230... 

NFX 11-681 Test Methods for Particle Size Analysis-Particle Size Analysis by Gravity Sedimentation in a Liquid Medium, 360... 

II ASTM C958 (1997), Standard Test Method for Particle Size-Analysis of Alumina or Quartz by X-ray Monitoring of Gravity Sedimentation, 360... 

Many different forms of graphical expression may be employed, and the use and applicability of some of these methods are demonstrated below with reference to the results of a sieve test. The graphical procedures described, however, are applicable, with suitable nomenclature changes, to all methods of particle size analysis. The sieve test data in Table 2.14 are recorded in three different ways, viz. the percentage by mass of the fractions retained on each sieve, and the cumulative mass percentages of oversize and undersize material. 

ASTM D 422. 2007. Standard test method for particle-size analysis of soils. West Conshohocken, PA ASTM International. 

Appropriate particle size analysis methods with very low shear stress (free settling with particle image velocity, field emission scanning electron microscopy, fluidized bed or vibrating sieve feeding with laser diffraction) have been tested for their reproducibility and minimal dispersion energy. 

The only particle size analysis required by the present method is that of the test solids in the feed stream. This is done off-line, using laboratory analytical equipment, and repeated many times to reduce errors. 

Particle size analysis of plastic pellets is important in molding and extrusion of materials with special reference to dust particulates. Standard test methods were found insufficient for this purpose and a special method was developed employing wet sieve analysis. This method gives superior data compared with the usually used dry sieve process. ... 

Today standardisation covers several methods of particle size analysis including evaluation and presentation of results. The Blaine test, other flou methods and several methods used to characterise building materials are standardised uorldwide. The adsorption method and the evaluation using the tuo-parameter BET equation has been standardised in several countries for a number... 

In the United States, a number of physical tests are performed on siUcon carbide using standard AGA-approved methods, including particle size (sieve) analysis, bulk density, capillarity (wettabiUty), friabiUty, and sedimentation. Specifications for particle size depend on the use for example, coated abrasive requirements (134) are different from the requirements for general industrial abrasives. In Europe and Japan, requirements are again set by ISO and JSA, respectively. Standards for industrial grain are approximately the same as in the United States, but sizing standards are different for both coated abrasives and powders. 

Testing. Various test methods are provided by ASTM (16). These iaclude pigment tests of importance such as chemical analysis, presence of oversize particles, oil absorption, particle size distribution, degree of dispersion, presence of soluble components, etc. Numerous tests are also given by ASTM for the properties of filled and unfilled polymers. These iaclude, for example, such properties as impact resistance, stiffness, viscosity, tear resistance, hardness, color, and electrical resistivity. 

During operation, samples of all flows were taken for suspended solids analysis. These tests were performed by a qualified local analytical laboratory. Procedures for this analysis were as outlined in standard methods.47 Glass fiber filter pads with a particle size retention of 1.2 pm were used. 

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