Immersion cleaning

Another method for introducing mechanical action into immersion cleaning is by the use of ultrasonics. Here, a high frequency vibration is imparted to the solution. At the surface to be cleaned, minute bubbles are formed and... 

Immersion-cell continuous pH measurement, 14 33 Immersion cleaning, of metal surfaces,... 

Immersion cleaning or dipping is often employed, particularly in situations where the dissolution of the contaminant requires and inordinate period of time such as several minutes. In all cases where soaking is involved, it should be followed by some type of spray cleaner with fresh reagent, followed by thorough drying. 

Small job shop used trichloroethane (TCA) in a vapor degreaser Converted degreaser into a water immersion cleaning unit... 

Water samples (oa 1 L) were collected by immersing clean mason jars to a depth of 1 cm in midstream. Water samples were extracted immediately with dichloromethane as described earlier. Moss samples (oa 300 g) were collected from rocks on the stream bed and packed in polyethylene bags after gently squeezing out adsorbed water. Samples were later cut into small pieces, thor-... 

Table 11.8 Results of Immersion Cleaning Tests of Molybdenum Disulphide Films (Ref.351)...

The conventional metal cleaning processes have been vapor degreasing, solvent immersion cleaning and cold cleaning. The solvents commonly used in these processes. 

Immerse clean probe at least 1 cm into nanopure water and sonicate for 2min to clean probe. 

The United States uses 160 billion gal of solvent each year.2 The largest single use is for vapor degreasing, followed by dry cleaning, then by immersion cleaning of parts. 

C NMR of adsorbed CO on a metal nanoparticle electrode surface has been the main system investigated so far from the perspective of probing the properties of the Pt surface and Pt-CO interactions. In most of these NMR experiments, CO was chemisorbed onto metal nanoparticle catalyst surfaces through the catalytic decomposition of methanol. However, an ad-layer of CO can also be produced by immersing clean nanoparticles into electrolyte solutions saturated with CO. In order to understand whether the electronic properties of chemisorbed CO depended on the source from which it was chemisorbed, we have carried out NMR experiments on CO chemisorbed onto Pt-black... 

Easy to use, long-tank life, alkaline aqueous cleaner designed for batch washers Easy to use, low pH aqueous cleaning solution for ultrasonic immersion cleaning systems... 

Spray batch and spray in-line cleaning systems for OA, no-clean, and RMA pastes and lead-free flux residues Removes all types of flux residues including lead-free in batch washing Flux residue removal in ultrasonic immersion cleaning systems requiring no sump side additives... 

Complicated and intricately cored castings can be handled in rotating fixtures to provide excellent cleaning results and complete drainage in any of the immersion cleaning cycles. 

If adhesion problems are experienced (i.e.. samples tend to fall off the slides during the hybridization procedure), it may be helpful to pretreat the slides with TESPA (3-aminopropyltriethoxysilane Sigma) before fixing the samples. To do this, immerse clean slides in a 1-2% solution of TESPA in toluene for 30 sec. Rinse twice in toluene and air dry. Store at room temperature. 

A process that has found widespread use in practice is semi-aqueous cleaning with ZESTRON FA. This cleaner was especially developed for removal of no-clean soldering fluxes in ultrasonic batch or spray under immersion cleaning systems. It is used in the cleaning bath, rinsed with demineralized water, and then dried with hot air (see scheme in Figure 14.8.13.). 

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