ASTM E578-07 Linearity of Fluorescence Measuring Systems
ASTM E578-07 test method determines the properties of fluorescence measuring systems using low-energy excitation sources to detect the limits of the linearity of response with fluorescence intensity. The method is applicable for fluorescence measuring systems using a single detector. The SI units are considered to be the standard of measurement.
ASTM E578-07 test method covers the performance properties of the fluorescence measuring systems. The limits of the linearity response are determined with respect to the range of concentration of a fluorescence substance. The stiffness of the material, recovery of the deformed portion, strain calculation, functioning, product assessment, transformation temperatures, quality control, specification acceptance, and research are dealt with in this method. This creates ease for the customer and supplier to reach an agreement.
The test apparatus uses a standard test solution of quinine sulfate dehydrate in sulfuric acid to test the linearity of fluorescence measuring systems. The instruments like cuvettes, slits, or filters are used to detect the fluorescence of the test solution in a measuring system. Multiple readings are taken, and a graph is plotted. The upper and lower limits of linearity are determined and expressed in micrograms per milliliter of the standard solution.
Specimen size should be as per the requirements. This test method can be applied to 10-mm path length cuvette formats and instruments covering a wavelength range within 190 to 900 nm.
The difference between the fluorescence intensity and the reading of the blank solution is represented by ‘S.’ ‘F’ represents the observed fluorescence intensity.
ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). It provides rapid, multi-element determinations with sufficient accuracy to assure product quality.
The ASTM D2674 is a standard test method for the analysis of sulfochromate etches solution used in the surface preparation of aluminum. The ASTM D2674 standard specifies a method for determining the efficacy of an etchant used to prepare the surface of aluminum alloys for subsequent adhesive bonding.
An immunological method for quantization of Hevea Natural Rubber (HNRL) proteins using rabbit anti-HNRL serum. Rabbits immunized with HNRL proteins react to the majority of the proteins present, and their sera have the capability to detect most if not all the proteins in HNRL.
ASTM G65 measures the resistance of metallic materials to abrasion using the dry sand/rubber wheel apparatus. The quality, durability, and toughness of the sample are determined using this test. Metallic materials are ranked in their resistance to scratching abrasion under a controlled environment.
ASTM E2141 test methods provide accelerated aging and monitoring of the performance of time-dependent electrochromic devices (ECD) integrated in insulating glass units (IGU). This test helps to understand the relative serviceability of electrochromic glazings applied on ECD.
ASTM C724 test method is used in analyzing the quality and ease of maintenance of a ceramic decoration on architectural-type glass. This test method is useful in the acknowledgment of technical standards.
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