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(For appliances where the inclination of the guides to the vertical exceeds 15°
for a given period of time
BS 5353 provides its users with instructions for the operation and test methods for quality assurance to maintain high quality and durability
ISO/TS 23016‑1 also provides you with step-by-step procedures to perform the method correctly to get accurate results
Methods for the petrographic analysis of coals - Method of determining microlithotype, carbominerite and minerite composition has-digital (For appliances where the inclination1 Scope This document specifies a method, using a graticule with 20 crossline intersections, for determining the proportions of microlithotypes, carbominerite and minerite in coals. It applies only to determinations made on polished particulate blocks using reflected white light (about 400 nm to 700 nm). Additional blue, blue violet or UV light excitation (365 nm to 440 nm) for better identification of liptinite in fluorescence may be used especially
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