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Coulter counter

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Journal Article

Confronto tra granulometro al laser, Coulter Counter e Sedigrafo utilizzando materiali di riferimento e sedimenti marini Free

Giovanni De Falco, Emanuela Molinaroli, Rosana Asunta Portaro
Published: 01 January 1999
Italian Journal of Geosciences (1999) 118 (1): 3–12.
...Giovanni De Falco; Emanuela Molinaroli; Rosana Asunta Portaro GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by CNR, Comitato Scienze Geologiche e Minerarie, Rome, Italy 1999 Coulter Counter experimental studies grain size instruments laser...
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Journal Article

Rapid grain-size analyses of clay and silt fraction by SediGraph 5000D; comparison with Coulter counter and Atterberg methods Available to Purchase

Ruediger Stein
Published: 01 July 1985
Journal of Sedimentary Research (1985) 55 (4): 590–593.
DOI: https://doi.org/10.2110/55.4.590
View PDF for article title, Rapid grain-size analyses of clay and silt fraction by SediGraph 5000D; comparison with <span class="search-highlight">Coulter</span> <span class="search-highlight">counter</span> and Atterberg methods
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Journal Article

Floc stability during Coulter-counter size analysis Available to Purchase

Ronald J. Gibbs
Published: 01 June 1982
Journal of Sedimentary Research (1982) 52 (2): 657–660.
DOI: https://doi.org/10.1306/212F7FE5-2B24-11D7-8648000102C1865D
View PDF for article title, Floc stability during <span class="search-highlight">Coulter</span>-<span class="search-highlight">counter</span> size analysis
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Journal Article

Particle-size measurements by Coulter Counter of very small deposits and low suspended sediment concentrations in streams Available to Purchase

P. H. Walker, K. D. Woodyer, J. Hutka
Published: 01 September 1974
Journal of Sedimentary Research (1974) 44 (3): 673–679.
DOI: https://doi.org/10.1306/74D72AC7-2B21-11D7-8648000102C1865D
...P. H. Walker; K. D. Woodyer; J. Hutka Abstract The Coulter Counter method of particle-size analysis, based on particle volume, is outlined. The method and associated procedures, previously used for soils, have particular use in particle-size analysis of fine sand and silt in quantities below...
View PDF for article title, Particle-size measurements by <span class="search-highlight">Coulter</span> <span class="search-highlight">Counter</span> of very small deposits and low suspended sediment concentrations in streams
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Statistical comparison of the Coulter Counter PSDs for the terrigenous and ... Available to Purchase

Published: 01 August 2011
Table 5 Statistical comparison of the Coulter Counter PSDs for the terrigenous and biogenic silica components of settling-velocity separates of diatomaceous sediment samples.
Journal Article

Particle Size Measurement of Diatoms with Inference of Their Properties: Comparison of Three Techniques Available to Purchase

Robert S. Pugh, I. Nick McCave
Published: 01 August 2011
Journal of Sedimentary Research (2011) 81 (8): 600–610.
DOI: https://doi.org/10.2110/jsr.2011.43
...Table 5 Statistical comparison of the Coulter Counter PSDs for the terrigenous and biogenic silica components of settling-velocity separates of diatomaceous sediment samples. ...
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View PDF for article title, Particle Size Measurement of Diatoms with Inference of Their Properties: Comparison of Three Techniques
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Journal Article

Analysis of common pre-treatments in grain-size analysis (using a grain-size standard) Available to Purchase

Adam J. White, Stephanie S. Kienast, Markus Kienast, Jessica C. Garwood, Paul S. Hill
Published: 28 April 2022
Journal of Sedimentary Research (2022) 92 (4): 371–380.
DOI: https://doi.org/10.2110/jsr.2021.091
... and sortable-silt index in each treatment group to untreated samples using ANOVA. Two instruments, a Coulter Counter Multisizer III and a Coulter LS 230 Laser Diffraction Analyzer are used. Results from the Multisizer III suggest that the choice of pre-treatment method does not significantly impact the final...
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Journal Article

An alternative to exotic spore or pollen addition in quantitative microfossil studies Free

J. Gordon Ogden III
Published: 01 January 1986
Canadian Journal of Earth Sciences (1986) 23 (1): 102–106.
DOI: https://doi.org/10.1139/e86-010
... in a suitable electrolyte (e.g., NaCl – formic acid – water) permits calibration by Coulter counter of suitable dilutions (e.g., 5000 ± 100 mL −1 ) for delivery by "Tipet" volumetric flasks.The uniformity and distinctive appearance of the microspheres not only facilitate recognition but also provide a constant...
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Journal Article

Size distribution of disaggregated inorganic suspended sediment; southern New Jersey inner continental shelf Available to Purchase

Joseph T. Kelley
Published: 01 December 1981
Journal of Sedimentary Research (1981) 51 (4): 1097–1101.
DOI: https://doi.org/10.1306/212F7E2D-2B24-11D7-8648000102C1865D
...Joseph T. Kelley Abstract Size analyses of southern New Jersey inner shelf suspended sediment performed by a combination of pipette and Coulter Counter methods suggest that as much as 75 percent of the dispersed inorganic suspensate is finer than 0.5 mu m. The size distribution of inner shelf...
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Journal Article

A method to determine specific gravity of suspended particles using an electronic particle counter Available to Purchase

J. W. Gartner, K. L. Carder
Published: 01 June 1979
Journal of Sedimentary Research (1979) 49 (2): 631–633.
DOI: https://doi.org/10.1306/212F77C0-2B24-11D7-8648000102C1865D
...J. W. Gartner; K. L. Carder Abstract In this paper a technique to directly determine wet density of clay and silt size particles in suspension is demonstrated. The method involves use of a Coulter Counter for particle volume concentration determinations and gravimetric techniques for determination...
View PDF for article title, A method to determine specific gravity of suspended particles using an electronic particle <span class="search-highlight">counter</span>
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Journal Article

A comparison of electronic particle counting and pipette techniques in routine mud analysis Available to Purchase

G. L. Shideler
Published: 01 December 1976
Journal of Sedimentary Research (1976) 46 (4): 1017–1025.
DOI: https://doi.org/10.1306/212F70C2-2B24-11D7-8648000102C1865D
...G. L. Shideler Abstract Electronic particle counting and pipette size-analysis techniques are compared for their relative effectiveness in large-scale routine mud analysis. Optimum laboratory procedures for conducting electronic analyses with a Model TA Coulter Counter are presented. Comparative...
View PDF for article title, A comparison of electronic particle counting and pipette techniques in routine mud analysis
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Journal Article

Size analysis of fine-grained suspended sediments; a review Available to Purchase

Donald J. P. Swift, J. R. Schubel, Raymond W. Sheldon
Published: 01 March 1972
Journal of Sedimentary Research (1972) 42 (1): 122–134.
DOI: https://doi.org/10.1306/74D724AA-2B21-11D7-8648000102C1865D
...Donald J. P. Swift; J. R. Schubel; Raymond W. Sheldon Abstract Microscope, optical-sedimentation, direct optical, and Coulter Counter techniques GeoRef, Copyright 2008, American Geological Institute. 1972 ...
View PDF for article title, Size analysis of fine-grained suspended sediments; a review
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Mean diameter of the terrigenous and biogenic silica fractions of marine sediment samples D1–D5 as measured by settling and Coulter counter. Note that the Coulter counter measurements of the terrigenous fraction agree almost perfectly with settling diameter. Around 5.5 φ (~ 22 μm) biogenic and terrigenous solid volume and settling sizes are about the same, indicating K = 1 for both (see text).

Mean diameter of the terrigenous and biogenic silica fractions of marine se... Available to Purchase

Published: 01 August 2011
Figure 2 Mean diameter of the terrigenous and biogenic silica fractions of marine sediment samples D1–D5 as measured by settling and Coulter counter. Note that the Coulter counter measurements of the terrigenous fraction agree almost perfectly with settling diameter. Around 5.5 φ (~ 22 μm
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Mean diameter of the terrigenous and biogenic silica fractions of samples D1–D5 as measured by Coulter counter and Malvern. The laser represents the size of terrigenous material as larger than by Coulter counter by ~ 0.15–0.35 φ. Around 7.5 φ (5.5 μm) terrigenous and biogenic sizes are about the same, probably due to the fact that the biogenic material is fragments with zero porosity (see Fig. 6).

Mean diameter of the terrigenous and biogenic silica fractions of samples D... Available to Purchase

Published: 01 August 2011
Figure 4 Mean diameter of the terrigenous and biogenic silica fractions of samples D1–D5 as measured by Coulter counter and Malvern. The laser represents the size of terrigenous material as larger than by Coulter counter by ~ 0.15–0.35 φ. Around 7.5 φ (5.5 μm) terrigenous and biogenic sizes
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Capabilities of satellite and remote hydrooptical methods to estimate the suspension and chlorophyll content (marker of biogenic processes) and verification by direct measurements: mass concentration on nuclear filters vs. bulk concentration and Coulter counter readings. Remote methods allow large area coverage and fast deep water survey (vertical and horizontal). A, Satellite back scattered data vs. suspension concentration of the surface; B, satellite data on chlorophyll (markers of biogenic processes and phytobiofilter activity) vs. direct measurements of marine surface; C, hydrooptical estimates (light attenuation coefficient) vs. bulk concentration of suspension (1.8–5.6 µm fraction) from Coulter counter readings; D, bulk concentration of suspension (mm3/l) vs. mass concentration (mg/l).

Capabilities of satellite and remote hydrooptical methods to estimate the s... Available to Purchase

Published: 01 January 2010
Fig. 3. Capabilities of satellite and remote hydrooptical methods to estimate the suspension and chlorophyll content (marker of biogenic processes) and verification by direct measurements: mass concentration on nuclear filters vs. bulk concentration and Coulter counter readings. Remote methods
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Statistics for the particle-size analysis of a range of Southern Ocean sedi... Available to Purchase

Published: 01 August 2011
Table 2 Statistics for the particle-size analysis of a range of Southern Ocean sediments by Sedigraph, Coulter Counter, and Malvern laser analyzer. Samples rich in diatoms are denoted by the letter D, and samples with low diatom content by T (terrigenous). Differences between Coulter and others
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Statistics for the particle-size analysis of diatomaceous sediments by sett... Available to Purchase

Published: 01 August 2011
Table 3 Statistics for the particle-size analysis of diatomaceous sediments by settling, Coulter Counter, and Malvern.
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Submerged sediment-geochemical platform (White Sea) for in situ measurements of dispersed sedimentary matter fluxes and their components (mg/m2/day). A, Platform mechanism includes differential and integral traps for sample collection with given exposure; current meters; floats; anchor system; and an acoustic break that separates the platform from the ballast (allowing platform assent); platforms operate continuously (even subglacially) down to 5–6 m. B, The results of submerged platform operation; sedimentary flux values: averaged for 9 months (for differential trap at the depth of 115 m) and for a year (for two integral traps at depths 145 and 238 m); near-bottom current measurements indicating preferential sediment transportation near bottom (current speed 5–25 cm/s and distance not shown). C, Oceanological setting survey by 6–8 parameters prior to platform deployment and recover; only three parameters are shown, the temperature, salinity, and suspension content. Water sampling sites for direct measurements (ultrafiltration, chlorophyll, dissolved organic matter, hydrochemsitry, Coulter counter, etc.).

Submerged sediment-geochemical platform (White Sea) for in situ measureme... Available to Purchase

Published: 01 January 2010
and recover; only three parameters are shown, the temperature, salinity, and suspension content. Water sampling sites for direct measurements (ultrafiltration, chlorophyll, dissolved organic matter, hydrochemsitry, Coulter counter, etc.).
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Figure 13. Results from water sampling experiments that show sediment concentrations decrease rapidly with time (e.g., settle out) in the water sample collected from the freshwater layer of the Mississippi River, while particles from the saline bottom-water sample settle more slowly (upper graph). Settling experiment, equivalent spherical quartz diameters, and disaggregate (Coulter Counter) grain-size distribution for the samples collected from the two layers (middle graph). The equivalent spherical diameters were calculated from the settling velocities (lower graph) in the settling tube assuming Stoke's Law and a particle density of 2.65 g/cm3 (quartz). These calculations indicate that a significant percentage of particles in the settling tube were likely in floc form. For example, 37% of the particles from the freshwater layer in the settling tube settled at rates equivalent to sand (&gt;63 m), but only 10% of the disaggregated particles from the same sample were sand-sized. Settling velocity calculations (bottom graph) suggest that the majority of particles from the freshwater layer settle at rates of &gt;1 mm/sec, equivalent to a settling rate of discrete, fine-sand particles. This supports our assertion that once the particles have entered the saline bottom layer, they will quickly descend through the relatively low-velocity region to the sediment surface.

Figure 13. Results from water sampling experiments that show sediment conce... Available to Purchase

Published: 01 March 2008
). Settling experiment, equivalent spherical quartz diameters, and disaggregate (Coulter Counter) grain-size distribution for the samples collected from the two layers (middle graph). The equivalent spherical diameters were calculated from the settling velocities (lower graph) in the settling tube assuming
Journal Article

Grain size of Cretaceous-Paleogene boundary sediments from Chicxulub to the open ocean: Implications for interpretation of the mass extinction event Available to Purchase

Timothy Bralower, Laurie Eccles, Justin Kutz, Thomas Yancey, Jon Schueth, Michael Arthur, David Bice
Journal: Geology
Published: 01 March 2010
Geology (2010) 38 (3): 199–202.
DOI: https://doi.org/10.1130/G30513.1
... sites is consistent with the broad array of data that supports the correlation of the impact at Chicxulub with the K-Pg boundary mass extinction. We thank R. Malek and S. Geleskie for analytical help and H. Stoll for calibrating the Malvern Mastersizer and Coulter Counter. We thank C. Koeberl...
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