Quality recommended standards

Plastics Containers for the Carriage of Hazardous Materials. An Outline of Recommended Quality Control Standards... 

The supplier-user or vendor-vendee relationship, as it pertains to quality, is well described in the American National Standard s ANSI/ASQC Q90-1987 to Q94-1987. The standards are technically equivalent to the ISO 9000 to ISO 9004 series of the international Quality Management and Quality Assurance Standards. The recommended quality system specifies quality policy, organization, authority, personnel, management review, and so on. 

Quality. JIS standard G2302 shows that the first class material has 88 93% silicon content and it is used for explosives(carlit) or generating hydrogen gas in combination with sodium hydroxide. From the second to the fifth class, the silicon contents are defined as 75 80 , 3 7%, 25 30%, 20 25% respectively, and these classes are used as the deoxidation against in iron manufacture or the silicon supply for manufacturing silicon steel plate etc. The sixth class has 15 19% silicon content and is used for acid-proof iron vessels. For firework use(for the red thermit) the first class is recommended. 

Standards and standardization play a major role in reliability assurance. Only by using standard methods for product quality control can a product be introduced into the market. Quality standards are very important, especially for food analysis. Recommended standard (or etalon in French) matrices as well as methods are defined in terms of accuracy and precision.246 The European Union has prescribed strict quality standards for laboratories and the methods of analysis to be used in laboratories when carrying out official food quality control. 

The insulation resistance is not a "true" property of the material. It is determined by measuring the resistance between two electrodes applied to the specimen, with no attempt to separate conduction through the material from that along its surface, nor to calculate to a standard configuration from the electrode dimensions. Nonetheless, it is a useful, rapidly and easily measured property in the context of quality control. Standard electrode configurations for various purposes are recommended in I EC 167 [7]. 

ASHRAE 62, Ventilation for Acceptable Air Quality This standard can assist professionals in the proper design of building ventilation systems. Important aspects of the standard include the definition of acceptable air quality and information about ventilation effectiveness. It makes a recommendation about using source control through isolation and local exhaust. The standard also contains information on the use of heat recovery ventilation and provides a guideline for allowable carbon dioxide levels. 

Constructive Interoperability is related to engineering processes, standards, and specific technical agreements to be put in place in order to achieve interoperability. Thus, constructive interoperability is aligned with how interoperable systems are built. Currently available sets of standards are nevertheless not sufficient today, as they are not covering all the required aspects, as for example data quality. Recommended practices and certification for conformance are most of the time to be defined in order to ensure that data produced by a provider are those expected by the consumer. 

In order to ensure that the parts are molded at a low and acceptable stress level, we recommend developing a quality assurance standard and a test procedure that can be used as ongoing as well as receiving inspection criteria. The maximum acceptable stress level in the part should be set at 1000 psi. 

There is no guidance in ISO 9000 1994 on the subject matter of corporate quality policies. However, in the Committee Drafts (CD) of ISO 9000 2000 there is now some useful information. It is recommended that the quality policy should be consistent with the overall policy and goals of the organization and should provide a framework for the setting of quality objectives and quality targets. For the first time in these standards, a link has been made between policy and objectives so that policies are not merely motherhood statements but intentions for action. By deriving objectives from the policy you initiate a process for bringing about compliance with policy. 

ASTM D5296-92 requires this R. greater than 1.7 whereas the DIN 55672-1 1995-02 standard requires R to be greater than 2.5. The OECD was uncertain on this point in 1994 and provisionally selected an R of 2.5 but the OECD also recommended this value for further review by the OECD member nations. This resolution criterion in Eq. (1) is a useful one for judging column set quality... 

Methods are available for the determination of relative abrasion resistance using either a mixed jet of air and abrasive, as recommended in the appropriate British Standard or an abrasive wheel or disc. Owing to variations in the quality of the abrasive, and the performance of individual jets, a standard comparison sample is included in each batch. 

Colors in a laboratory should be coordinated, just as in a home. If pre-finished work benches are to be installed, they might set the color scheme. While they are available in several colors or combination of colors, the choice is not unlimited. In one case, the laboratory operator was color blind, so his wife took over the job as decorator. First, she selected a two-color scheme for the work benches. Color chips in hand, she then chose a floor covering from a number of samples submitted. For the wall paint, she found a standard color of the recommended quality that harmonized with the cabinets. A few appropriate charts and a colorful cloth wall-hanging of pipes and valves completed the decor. The result received many favorable comments from visitors to the facility. 

Enzyme Reference Serums. Several companies sell lyophilized or stabilized reference serums for the calibration of instruments and for quality control. The label values given for the enzymatic activity of these serums should never be taken at face value, as at times they may be quite erroneous (19,33). Also, these values should only be used for the assay with which they were standardized, as interconversion of activity from one method to another for the same enzyme may often lead to marked errors. For instance, it is not recommended that alkaline phosphatase expressed in Bodansky units be multiplied by a factor to convert it to the units of the Ring-Armstrong method, or any other method for that matter. 

To test the quality of some synthetic dyes according to standardized procedures, a screening is recommended based on TLC analysis on silica plates 60 F 254 using elutions with an ethyl acetate pyridine water 25 25 20 (v v v) mixture. To determine purity and secondary dyes (components or by-products of a dye that are not allowed to be present), successive TLC separations are recommended or, for more accurate answers, HPLC-DAD using RP-18 columns and eluents like acetonitrile and phosphate buffer."... 

The revised database holds over 23 000 analyte values for 660 measurands and 1670 reference materials produced by 56 different producers, from 22 countries. The database is restricted to natural matrix materials (i.e. made from naturally occurring materials, excluding calibration standards manufactured from pure chemicals). Information has been extracted from the relevant certificates of analysis, information sheets, and other reports provided by the reference material producers. As a general rule, the authors have only included in the compilation reference materials for which a certificate of analysis or similar documentation is on file. Information included in the survey is on values for measurands determined in reference materials, producers, suppliers, the cost of the materials, the unit size supplied, and the recommended minimum weight of material for analysis, if available. The new searchable database has been designed to help analysts to select reference materials for quality assurance purposes that match as closely as possible, with respect to matrix type and concentrations of the measurands of interest and their samples to be analyzed see Table 8.3. 

G. Quality control information. All critical points, with recommended control procedures and performance criteria, should be identified. If applicable, stopping point(s) should be indicated. Performance specifications for instruments and standard materials should be included. Recommended actions to be taken if performance does not meet the acceptance criteria need to be provided. Sample handling... 

In the author s experience, field residue trials can be conducted in Latin America under complete compliance with all ERA guidelines and recommendations. More time does need to be spent in planning and preparation to ensure that the personnel involved in the testing have been trained in GLP and that this training, as well as the compliance of equipment, storage and archival sites, standard operating procedures (SOPs), and quality assurance (QA) audits, are properly documented. 

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