ASTM D4530-15 (R2020) pdf free.Standard Test Method for Determination of Carbon Residue (Micro Method)
1.1Final Weighing- Transter sample vials (maintained in place in the vial holder) to dsiccator and llow vials to cool 10 Fo0m temperature. Weigh the coolod vials 10 the necares 0.1 mg and reord Handle the vials with foreps. Discard the uased glass sample vials.
1.2Ocxcasionally examine the condensate trap amt the botom of the owen chamber. empy if neessary and replace.(Warning The condensate rap residue may have some carcinogenie maerials presenL. Aroid contact with the trap residue; dispose of il in accordance with local laboratory practice,)
2.1 The precision of this test method as determined by (see Note 5) statistical examination of interlaboratory results is as follows:
None 5- Precision data were generated by a task force in 2004. The round robin involved nine laboratories and six petroleum materials in duplicate analysis. The range for values samples was from0.1 % to 25 %. No precision data or correlation data exists for results obtained using 10 % bottoms or 15 mL vials, or both. See X1.1 and Fig. X1.1 regarding a separate 1983 correlation study’ that was performed between Test Methods D189 and D4530.
2.2 Repeatability- -The difference between two test results,obtained by the same operator with the same apparatus under constant operating conditions on identical test material, would, in the long run, in the normal and correct operation of the test method, exceed the values shown in Fig.3 in only one case in
twenty.
2.3 Reproducibility- -The difference between two single and independent results, obtained by different operators working in different laboratories on identical test material, would, in the long run, in the normal and correct operation of the test method, exceed the values shown in Fig.3 in only one case in
twenty.
2.4 Bias- -The procedure in Test Method D4530 for measuring carbon residue of petroleum by the carbon residue method has no bias because the mass % of carbon residue can be defined only in terms of the test method.ASTM D4530 pdf download.