Resistance to growth of mold on the surface of interior coatings (paints and varnishes) in an environmental chamber is evaluated by ASTM D3273. This test mainly focuses on establishing the relative resistance of paint films to the propagation of mold and mildew under perfect fungal growth parameters.
ASTM D3273 test is used for evaluating fungal defacement of the surface of interior coatings in an accelerated manner. This test mainly focuses on establishing the relative resistance of paint films to the propagation of mold and mildew under perfect fungal growth parameters. Different species of fungus, for various custom projects, can easily be adjusted by using this test. Also, the test provides an easy and direct procedure to control for extraneous variation. This test method is designed mainly for testing paints and varnishes. For a standardized rating system, ASTM D3274 is used as a complementary method.
For ASTM D3273, the growth chamber is made ready with proper soil and water content and is equilibrated for 24 hours at about 32°C. Then, suspensions are molded from three fungi cultures that are spread uniformly over the soil surface. They are incubated for about 14 days. Different species are used, such as Aureobasidium, Aspergillus niger, and Penicillium. The non-coated substrates and coated test panels are established randomly to a sporulating chamber by vertical hanging. The panels are rated for mold growth each week for four weeks on a 0-10 rating scale using photographic standards as specified by ASTM D3274.
The samples are used as stated by the ASTM D3273 test method.
The results are reported at the end of the four-week exposure providing the mean and range of the three panels.
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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