... orientation mounts. The pipette mount method is useful for the identification of clay minerals with small particle size in low concentration, especially mixed-layer clays. For routine clay mineral analysis, a combination of both methods is recommended. GeoRef, Copyright 2006, American Geological Institute...

...E. W. Behrens Abstract Mean grain sizes as determined by electronic particle counting have been reported as coarser than those determined by pipette analysis. This has been attributed to possible particle shape effects, possible coincidence error in particle counting, or an omission of some...

...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...

...Richard Walter Sternberg; Joe Scott Creager Abstract A large sample of silt and clay was divided into 9 subsamples, with concentrations increasing from 3 g./l. to 25 g./l. These subsamples were first subjected to the hydrometer analysis, after which they were shaken and re-analyzed by the pipette...

... force incurred by particles in the spinning microcentrifuge for the gravitational force incurred by particles falling freely through water. Several sediments with average sizes in the [1]/[16]-[1]/[8] mm. or [1]/[32]-[1]/[16] mm. Wentworth grade are analysed by the pipette method of Krumbein...

...N. N. Hellman; V. E. McKelvey Abstract A small, sensitive hydrometer, reading in grams per liter, is enclosed within a pipette case similar to that holding the ordinary battery hydrometer. Pipette samples are taken from a suspension of known concentration as in the standard pipette method; instead...

...Figure 2. A: Particle size distribution determined by pipette method. B, C: Particle size distribution determined by laser granulometry using a Coulter LS 200. B: Results for all 26 samples after carbonate removal using acetic acid. C: Results for subset of 10 samples after carbonate removal...

...F. C. Calkins Abstract Mrs. Lindberg’s ingenious method of fishing grains from oil 1 is better adapted to young, deft hands than to old, clumsy ones; mine, at any rate, have not been able to make it work with the straight pipette that she describes. I have had good success, however, with a curved...

...Clifton F. Jordan; Glenn E. Fryer; Elze H. Hemmen Abstract The photo-extinction method of fine particle size analysis by hydrophotometer is significantly faster and more precise than pipette analysis. Six samples are analyzed per hour by the hydrophotometer and calculations can be performed...

..., continuous size distribution curves were constructed for samples of silt, loess, and volcanic ash. In order to compare the photo-extinction method with the more familiar pipette, hydrometer, and microscope methods, samples of the loess were analyzed using the 4 techniques. Results obtained with the photo...

...William Christian Krumbein Abstract Older methods of mechanical analysis are briefly discussed and contrasted with the newer precision methods. The pipette method is chosen from the latter as one based on sound principles and yet simple in operation. The principles of the method, its range...