Quick check test

Therefore, if the detection test is not sophisticated, in terms of both the testing techniques and the means, it can be done on site and requires no background science of either microbiology or corrosion, we call these tests rapid check tests . In this regard, a majority of the tests called rapid check tests by some experts [14, 36] will need to be re-assigned. To give an idea of what these so-called quick check tests are, here is a list of the test types ... 

The primaiy use of this laboratoiy technique today is as a quick check to determine the order of magnitude of a corrosion reaction. Sometimes the calculated rate from an immersion test does not look correct when compared to the visual appearance of the metal coupon. 

Therefore my recommended technique is to start with a very small step size to get the program debugged and running. Then make a few quick empirical tests in which you keep doubling the step size. Check the accuracy of successive runs and continue increasing the step size until you find the biggest At that gives sufficiently accurate answers and is stable. 

The quadrant sum test is recommended as a quick check on whether a correlation exists between two sets of measurements. It is a good method, although it relies entirely on the extreme values of the variables to detect a correlation. Every once in a while, one runs across a situation where the main bulk of the data appears to be correlated, but one or two of the extreme values fall out of line. In these situations, the quadrant sum test fails to detect the relationship. 

Look for the most commonly tested errors. There are seven kinds of mistakes that pop up most often in Improving Sentences questions. If you are having trouble finding an error, do a quick check for the common errors described in this section. 

Visual check of the stationary phase before packing A small sample can be used for a quick lab test. A sedimentation trial can be performed in the lab with less than a gram of stationary phase. The solvent should be selected so that the particles can sediment in a few minutes. Methanol is often an appropriate candidate for this test. 

Among the analytical techniques described in previous sections, ELISA was found to be particularly suitable for routine detection of soy as an allergen in food products. Since commercial kits contain all the materials needed for test execution and the equipment required is comparatively cheap, the assay could also be carried out in unspeciaUzed facilities. The analytical procedure is quite easy and fast, so it could be useful for a quick check of possible contamination or residues from soy. The main disadvantage is that industrial processing could destroy protein structure, and for this reason results related to processed foods should be regarded as presumptive only, never as absolute. 

A quick check of extrusion properties of ceramic compounds can be made using a simplified capillary-rheometric method. A one-point or two-point determination can, for example, make it possible to quickly select promising compound compositions. The accelerated test method was used in the development of a compound from aluminium oxide for making catalyst supports. Two criteria were here taken into account ... 

A urine specimen is often collected from a patient entering a hospital and is checked with a paper test strip that contains bands of different reagents that will react with the different abnormal constituents (see I Figure 15.8). This one simple test quickly checks for indications of pathological conditions. 

A quick test by a wet swab dipped in liquor ammonia solution can be done by holding it against the exit gas to detect the presence of unabsorbed HCI gas. Quick check of scrubbing liquor— Eh ovide a sampling line from pump discharge to control room and check by pH papers or universal indicator solutions. This is to check the alkalinity of scmbbing liquor if the pH metre is not working. Solid feed measurement... 

If a material was tested as a final product before storage, then one or two tests may be used to confirm that it is still chemically useful. Often, color may be used for a quick check of purity, but more often an infrared/ near-infrared (IR/NIR) identity is preferable. 

Lead detection kits are useful as a quick check for screening areas for lead abatement. A positive response is evidence of the presence of lead or a positive interference. A negative response, however, is not conclusive evidence of the absence of lead. The test provides presumptive evidence for the presence of lead, not its absence. A more thorough determination may need to be performed by a quantitative laboratory analysis of any representative bulk material available to substantiate the absence of lead. Samples are analyzed for lead at OSHA s Salt Lake Technical Center (SLTC) using OSHA methods ID-121 with Atomic Absorption Spectroscopy (AAS), ID-125 G with Inductively Coupled Plasma (ICP), or ID-206 (Solders by ICP). If necessary, lower limits of detection for lead may be achieved using ICP Mass Spectrometer procedures. 

In metal bonding the issue of wetting is easily settled. Clean metal surfaces have extremely high critical wetting tensions, in the order of several hundred dynes/cm. As a consequence, adhesives with a typical surface tension of 35 dynes/cm have little trouble wetting metal surfaces. If wetting problems occur, it is almost always the result of contamination on the substrate surface, a condition that can be quickly checked with the water break test. If water with a surface tension of 73 dynes/cm wets the surface, it is a safe assumption that no problem will be encountered with lower surface tension adhesives. 

Ohms per square testing involves the placement of a probe on a surface of the part. This probe has two outside blocks of equal geometry and a space of equivalent dimension between the blocks. The probe is simply placed on the part and conductivity is measured. The test is extremely useful in quick checking the coated parts to verify minimum thickness of a conductive film. However, the test is not very effective for determining the overall conductivity of a coating across an actual part. 

In perhaps most cases, the specificity of the antibody you are going to use has already been characterized by others. To quickly check whether this is the case, the Journal of Comparative Neurology keeps a useful data bank comprising work published in this journal (http // onlinelibrary.wiley.com/journal/10.1002/(ISSN) 1096-9861/homepage/jcn antibody database.htm). If the specificity of your antibody has already been specified in detail in Drosophila, giving the appropriate citation should be fine. However, if your antibody is new, or has never been used in the fruit fly before, its specificity needs to be tested. 

The various examples that have just been presented show that it is possible, with limited experimental effort, to be able to prediet the evolution of the physical-chemical properties of liquid biological media or solid foods. It then becomes easy to be able to quickly calculate the elTeet of composition changes on the pH or the aw of the food, without going through tests expensive in time and money. Among the requests made by health authorities, the reduction of the quantities of sodium chloride has been included. The thermodynamics software allows us to quickly check the effect of such a reduction and to test the substitution of sodium chloride by potassium chloride or by any other salt or mixture of salts. It can be used to determine the optimal substitution rate which only requires the test of one or two solutions. Nonetheless, the most promising use of the thermodynamic model is its incorporation in process simulators. 

The first step of the quick functional test is the same for both design variants the instrument should be turned into the battery checking position. The indication should be BATTERY OK, or similar. If this is not so, one should use the STOCK FAULT LIST given in section 11.5. 

Check your readiness for an exam by taking the Pre-Test and exploring the self-study modules recommended in your Personalized Study plan For quick review, download Go Chemistry mini-lecture flashcard modules (or purchase them atwww.ichapters.com)... 

Go back to a documented reference point by performing a system check with a test mix or system suitability sample that can lead to a quick diagnosis. 

The validation of the peak purity is important for selectivity. The efficiency should be optimized to avoid co-elution of different analytes. Two-dimensional detection is a quick and convenient method to check peak purity. CE/UV coupling is most common,and instruments are commercially available. ° The possibilities of CE/MS have already been discussed. The use of several separation systems with different selectivity is a more time-consuming method to test peak purity. 

In addition to that a quick system-suitability check should be done every day and when a system is restarted. The system-suitability test particularly emphasizes on resolution and sensitivity (single/concentration) or the DL. To save time, the system suitability test should restrict to repeatability of migration time and PA, and to resolution of relevant peak pairs. 

---