Glass measurement

Sand Content. The sand content in mud is determined using a 200-mesh sieve screen 2 in. in diameter, a funnel to fit the screen, and a glass measuring tube. The measuring tube is marked for the volume of mud to be added to read directly the volume percent of sand on the bottom of the tube. 

A variable-area, fluid or gas flow-rate meter. Usually a cone inside a glass measuring cylinder that is suspended by the upward flow of gas or liquid. 

McAlea, K.P. and Besio, G.J. (1988). Adhesion between polybutylene terephthalate and E-glass measured with a microbond technique. Polym. Composites, 9, 285 290. 

Fig. 9. The infrared spectra of adsorbed molecules. The lowest line on each spectrum is the background obtained after evacuating the porous glass. Measured surface coverages (fl) are given for all spectra (133).

To measure a definite volume of hydrofluoric acid, you can use an ordinary clean and dry glass measuring cylinder whose inner walls have been coated with a thin layer of paraffin. How does hydrofluoric acid react with glass ... 

Field turbidity meters may be part of the multiple field parameter meters or they may be available as standalone units. A typical meter has a range of 0-1000 NTUs and an accuracy of + 2-3 percent. Some meters have a submersible turbidity probe that allows in situ measurements, while others require sample collection for ex situ measurements. To perform an ex situ measurement, we pour the sampled water into a glass measuring cuvette (usually a vial with a cap), seal it, and insert into a measuring chamber of a portable nephelometer. The read-out device will give us a turbidity value in NTUs. 

The Values of KWW Exponent v, Fractal Dimension Dp, Porosity 4>m Obtained from the Relative Mass Decrement (A, B, C, and D Glasses) and BETA (E, F, and G Glasses) Measurements and Average Porosity (4>p) Estimated from Dielectric Spectra for Porous Glasses Samples. 

Polish rate vs. the surface hardness of glasses measured a et leaching in 0.1 N HCl. (From Ref. (3).)... 

Pour 100 ml of water into a glass and 100 ml of cooking oil into a second glass. Measure the time it takes for a marble to pass through each liquid and compare the viscosities of the liquids. 

The reaction is done as follows Into a clean, dry 3000 ml round bottom flask is placed 200 grams of phenylacetic acid, 740 ml of acetic anhydride and 740 nil of pyridine. This is done on a table covered with a sheet of newspaper, because phenylacetic acid, once it is exposed to the air, smells like cat urine, and the smell is next to impossible to get rid of. Pyridine also smells awful. The pyridine and acetic anhydride are measured out in a large glass measuring cup. 

The origin of the characteristic colors of alkali metal suboxides has been investigated by reflectometry in the range 1.4-6.2eV (900-200 nm). (63) Investigations have been confined to those samples which could be obtained as homogeneous mirrors on quartz glass. Measurements with unpolarized light and vertical incidence are shown in Fig. 23. 

The static dielectric constant of superheated water was measured by the relative noncontact bridge method. " The glass measuring cell was relieved of pressure. Measurements were made in the range from 423 to 573 K along isotherms with an interval of 10 K. Within the measurement error the static dielectric constant of superheated water remains unchanged along the isotherms. 

Now the cold ingredients are measured out. With a glass measuring cup, measure out 300 c.c, of nitric acid, and 300 c.c. of concentrated sulfuric acid. (Note 1 c.c. = 1 ml. It is also important that the nitric acid not have a reddish tint to it.) The nitric acid and sulfuric acid are then mixed together in a measuring cup. The cup filled with the mixed acids is then placed in the ice bath to keep it cold. In a second measuring cup nestled well within the ice bath, put 150 ml of methyl alcohol. 

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