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The analog sound track formats suitable for reproduction using such a reproducer include the cyan dye-only track (without redevelopment of silver) and both conventional and “high magenta” soundtracks (with redevelopment of silver)
— textile slings according to EN 1492‑1:2000
1) to design lighting system solutions for sustainable lighting quality based on recommendations in the relevant lighting application standards
Basic equation
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Water quality. Determination of pH<sub>t</sub> in sea water. Method using the indicator dye <i>m</i>-cresol purple has-tracked-changes The analog sound track formats1 Scope This International Standard specifies a spectrophotometric determination of the pHt of sea water on the total hydrogen ion concentration pH scale using the indicator dye m cresol purple. The total hydrogen ion concentration, [H+]t, is expressed as moles per kilogram of sea water. The method is suitable for assaying oceanic levels of pHt 7,4 to 8,2 for normal sea water of practical salinity ranging from 20 to 40.
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