Test cube

Equipment Needed for Tetti Several glass slides Two glass stirring rods Porcelain SPOT plate HCL in alcohol—4-oz. bottle KOH in alcohol—4-oz. bottle One small funnel Two test cubes. 

Add to the other half in the test cube about lec of solution of hydrochloric acid in alcohol, and shake. When settled the lower layer should be distinctly pink. 

Since supercritical fluids were chosen for their ability to penetrate small cracks and crevices, additional tests were performed to evaluate this characteristic. A test cube modeled after a similar fixture fiibricated by Ferranti Aerospace, was developed and manufactured to md in this study. The cube had a number of blind holes, tapped holes, dtannels and crevices to simulate actual hardware. Beryllium, 300 Series stainless steel and aluminum cubes were constructed to simulate the conunon metals found in the instrument. In addition, the sides of the cube were removable to facilitate deposition of the contaminants into these blind holes and crevices and later analysis of cleaning effectiveness. The base of the cube was equipped vrith a scanning electron microscope (SEM) mount so that the cube could be examined directly in the SEM. Figure 3 is a photograph of a test cube. Extensive evaluations with these test cubes indicated that supercritical fluids were indeed effective at removing contaminants from cracks and crewces. 

The so-called paper electrophoresis is described in Ref 7. It consists of applying the sample with. a micropipet at the center of a pencil, line made on strips cut from Whatman No 1 filter paper. About 0.4-0.5ml of appropriate solv saturated with.water is placed in a test cube. After the solv ascends jche strip is dried and sprayed with an indicator (Compare with Electrobsmosis)... 

Adjust the temperatuce of the heat tube bath to 82.2il C and insert all four test cubes into tHc sci i The depth of irorn rsicri... 

More or less cubical blocks of large size are quite common as the ore or rock comes from the mine or quarry owing to the effect and distribution of the explosive charges in the cleavage planes. The original test cube yields 12 fragments consequently the average volume after the theoretical break is one-twelfth that of the unbroken... 

Rate of curing if possible use compressive or tensile bend strength as in Table 7.2. Alternatives include bonding of concrete test specimens to a segment in place or bonding of small steel cylinders to concrete test cubes. 

Figure 14.9 Results for Three-Variable Optimization on DME Process Objective Function Values Are Shown at the Corners of the Test Cube...

There is less absorbing medium between the source and the detector than usual a different source (test tube) shape, the test Cube has a thinner wall, or is made of a different material than usual. 

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