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Sample temperatures during outdoor and laboratory weathering exposures.

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In accelerated chamber corrosion & weathering tests as also in atmospheric exposure tests, the effect of sample temperature as uncontrolled variable was explored in terms of photodegradation to paint & other organic coatings. Sample temperatures tend to be higher in xenon chamber tests that outdoor exposure, therefore Arrhenius plot corrections should be made to compensate for this.

Sampling and Analysis Considerations for the Determination of Hexavalent Chromium in Workplace Air.

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The state-of-the-art concerning the measurement of airborne chromium(VI) compounds in workplace aerosols and related samples is discussed. Airborne hexavalent chromium(VI) is a known human respiratory carcinogen and allergen. Workers in a variety of industries may be exposed to airborne hexavalent chromium, with exposures frequently occurring via inhalation and/or dermal contact. Analytical methods for the measurement of chromium(VI) compounds in workplace samples, rather than for the determination of total elemental chromium in workplace air, are often desired because exposure limit values for chromium(VI) compounds are much lower than for total chromium. For years, sampling and analytical test methods for airborne chromium(VI) have been investigated so as to provide a means for occupational exposure assessment to this highly toxic species. Inter-conversion of trivalent chromium and hexavalent chromium may sometimes occur during sampling and sample preparation, and effort to minimise unwanted redox reactions involving these chromium valences have been sought. Because of differences in toxicity, there is also interest in the ability to differentiate between water-soluble and insoluble forms of chromium(VI), and procedures that provide solubility information concerning chromium(VI) compounds have been developed.

Sampling Inspection by Attributes of Electroplating Products-Application of the Latest Edition of GB/T12609.

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According to the latest edition of GB/T 12609, sampling procedures for inspection by attributes of electroplating products, implementation of the inspection as well as disposal after inspection were described. Inspection lot and lot size, types of defect and reject, expression of the quality of inspection lot, acceptance quality limit, inspection level in the latest standard were explained. Sampling plans and methods of sampling are set out. A detailed discussion considers how to understand isolated lots and continuous lots, and how to handle them.

Sampling of Effluent Streams

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Pt 2 in the series looks at sampling from manholes, where to do so and the safety aspects thereof.

Sampling of Effluents

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Advice on how and where to sample for effluent control purposes, what volumes to withdraw, what type of containers to use and how frequently to sample. A "sampling box" incorporating a "V-notch" weir is illus'd. To be cont'd in Nov. issue.

Samuel Field - founding father of the IMF

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Historical note on a very well-known metal finisher and electrochemist of his time (1875-1965)

Sand Blast Apparatus with Gas & Fluid Discharges

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Sand Blast Nozzle

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Sand Blast Nozzle for Aqueous Suspensions

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Sand blasted incandescent lamp

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Sand blasting and coating operations in the condensation chamber of a boiling water reactor with the example of a 800-MW-plant

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Safety aspects in painting of nuclear reactors are summarised and application of primer and top coating are described.

Sand blasting mask laminate with blastable pressure sensitive adhesive

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Sand Blasting Nozzle

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Nozzle using mixt. of incompressible liquid and compressible fluid with abrasive particles.

Sand blasting on contract basis

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Abrasive blasting facilities at Fa. Agner, Alt”tting, W. Germany, are described.

Sand blasting with industrial robots

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Describes use of Trallfa GmbH. (Frankfurter Str. 168-176,6078 Neu-Isenburg) robot for abrasive blasting. Programming is discussed.