Quality control specifications

Plot properties of the fresh and equilibrium catalysts ensure that the catalyst vendor is meeting the agreed quality control specifications. Verify that the catalyst vendor has the latest data on feed properties, unit condition, and target products. Verify the fresh makeup rate. Check for recent temperature excursions in the regenerator or afterburning problems. 

The two research investigations reported here - the sensory quality control specification model and the application of sensory and analytical data for defining differences in tobacco aroma - both demonstrate the usefulness of multivariate analysis techniques for analyzing analytical and sensory data as well as correlating these data. Although these tasks do not compare in complexity to that of the prediction of sensory response to analytical data collected on cigarette smoke, our research to date has revealed no element which indicates that this is an impossible task. In fact, the results of these and similar... 

A catalyst made in the laboratory or by a catalyst manufacturer must be tested and meet quality control specifications to ensure high quality and reproducibility. Catalyst companies are ISO 9002 certified which also provides... 

Pharmaceutical Purity. A safety profile of a generic drug can differ from that of the brand-name product because different impurities may be present in each of the drugs (154). Impurities can arise out of the manufacturing processes and may be responsible for adverse interactions that can occur. For example, serious adverse reactions (Lyell syndrome) were observed upon the use of isoxicam in 1985. These seemed to have resulted from trace elements of a manufacturing by-product that was within the manufacturing quality control specifications. 

Submit quality control specifications and analytical certificate (not more than one year from the date of issue of certificate or the most current certificate, if there were no production in the past years.)... 

Where a statutory standard is applicable to a starting material this is a minimum specification and the quality control specifications used should at least conform to it except where it can be shown that particular tests are not relevant to the quality of the product, if alternative test methods are used, they should be shown to be at least as accurate, precise and specific as the official method. Additional clauses may be necessary to meet the specific requirements of the manufacturer or of specific equipment or products. 

The quality control specifications should also conform to any specifications accepted by the Department for approval of the product or in connection with its registration. 

It is simple to understand the rationale for testing plastics. For a resin supplier, plastics testing is an integral part of new product development, application development, and quality control. Specifically, the key reasons are... 

Determine that appropriate reference standards, solvents, reagents and other solutions were used, and that they met quality control specifications (e.g. had been stored appropriately, were notout of date etc.). 

Derivative spectra of foods and beverages have also been taken. They help to ensure that the strict quality control specifications for such products are met (Table 5-14 and 5-18). 

Discussion of the historical consumption and prices. List of the competitive materials, viz., metals, homopolymers, other blends, etc. (Table 4). List of similar blends with their trade and manufacturer names (Table 5). Quality control specifications and standards, health and safety factors, and forecast the blend evolution. 

Two basic types of instruments are used for color measurements depending on what is required. A filter colorimeter or a spectrophotometric colorimeter is employed when the user is only interested in tristimulus values, chromaticity coordinates, and color difference information. Figure 6-11 illustrates a commercially available spectrophotometric calorimeter. Colorimeters are mainly used for production control, quality control, specification, and color-matching requirements. 

The individual oxygenate values obtained must agree within S % relative of the values in the prepared quality control standard (for example, MTBE 14.0 0.7 mass %) or to within 0.3 mass % absolute, whichever is greater (for example, methanol 4.0 0.3 mass %). If the individual values are outside the specified range, recalibrate the instrument according to the procedures in 9.2. The quality control standards should not be used for the calibration or recalibration of the instrument. Do not analyze samples without meeting the quality control specifications. 

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