ASTM Color Scale. ASTM Color as specified in ASTM D is a single number colour scale for grading petroleum products. The scale is defined by. 16 glass. The visual Saybolt and ASTM D Color scales can be used individually or in tandem to rank low and high chroma petroleum-based. ASTM D is a single number, one dimensional, colour scale ranging from a pale straw through to a deep red in sixteen steps ( – units in increments of .
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Two-disc configuration offers a distinct advantage over single-disc systems – the sample is always bracketed between the next lower and higher color standards allowing the viewer to easily determine the actual sample color. Awtm the color range of a aastm product is known, a variation outside the established range may indicate possible contamination with another product.
Looking for a specific close-up? Replacement white inserts are available to ensure correct lighting levels are preserved.
Historical Version s – view previous versions of standard. The three section field-of-view optical system allows a sample and two reference standard colour filters to be viewed simultaneously, allowing easy comparison of colour.
Petroleum Products and Biofuel lab apparatus baths, calorimeters, color measurement, density meters, flash point, hydrogenators, oil testing, penetrometers, surface tension, vapor pressure, viscometers and rheometers, The Seta-Lovibond Colour Comparator is used for visual determination of the colour of oils and petroleum waxes.
View the sample from either a standing or sitting position through a prism eyepiece that brings the standards and sample together in a three-field comparison. In some cases, the color may serve as an indication of the degree of refinement of the material.
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However, color is not always a reliable guide to product quality and should not be used indiscriminately in product specifications. Comparator may also be used to quickly determine if a sample falls between two predetermined color limits. Samples too dark for direct viewing are diluted with kerosine. Email Us or call toll-free: What is your application?
The discs and sample are axtm by a tungsten quartz halogen light source colour corrected to CIE standard illuminant C. Color discs situated on either side of the sample contain standards conforming to the chromaticity coordinates of ASTM D Link to Active This link will always route to the current Active version of the standard. The following link provides additional information from the instruction manual or original manufacturer’s brochure.
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Copyright Stanhope—Seta Limited A detachable prism light shield may be inserted to eliminate any outside light interference. Color corrected filtered zstm light source corresponding to Illuminant C of the CIE system provides clear visibility, assuring accurate readings.
Supplied with a Certificate of Colour Conformity. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Enter product namemake or model. Rotate the discs by turning dials on the front of the comparator until the sample color matches the color standards and take the reading directly from astmm dials. Determination of colour ASTM scale.
Samples which are not clear such as petroleum waxes are pre-heated above their cloud point. What are your requirements. General Use laboratory apparatus awtm, baths, blenders, centrifuges, chart recorders, freezers, fume hoods, furnaces, glassware washers, glove boxes, mixers, moisture testing, ovens, pumps, shakers, vacuum equipment, water purification Available request a quote.
The colour filters are mounted in two discs, one with full value standards and the other with intermediate value astn, giving improved discrimination over single disc comparators. Koehler K Saybolt Colorimeter. Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: Type text as it appears:: Pharmaceutical laboratory apparatus stability chambers, tablet disintegration, tablet dissolution, tablet hardness, V-blenders, Methods of test for petroleum and its products.
Lab Equipment for Sale: It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Work Item s – proposed revisions of this standard. What are your specifications? Right-click to open the PDF in a new window or download it: