ASTM WK64808

    Revision of D7573 - 18 Standard Test Method for Total Carbon and Organic Carbon in Water by High Temperature Catalytic Combustion and Infrared Detection

    (What is a Work Item?)

    Active Standard: D7573 - 18ae1

    Developed by Subcommittee: D19.06 | Committee D19 | Contact Staff Manager



    WK64808


    Keywords

    carbon; carbon dioxide; environmental; high temperature catalytic oxidation; organic carbon; total carbon;;

    Rationale

    Item was balloted through main with no negatives, however, upon review we noticed that the mean recovery of samples 1, 2, 3 and 4 were not included in Table 5. We are re-balloting Table 5. The full method is available on request. An Inter-laboratory Study was conducted using three Youden pairs and additional matrices for a total of nine different matrices. These matrices were submitted to the laboratories as blind duplicates resulting in 24 blind analyses for the labs. Of nine initial labs contacted, seven returned data sets. Modifications from approved version (approved at 40 CFR part 136.3) 1)Scope modified to be consistent with matrices and concentrations tested in the ILS 2)3 references added 3)Table 1 = examples of calibration standards 4)Sampling adds 3 references 5)Precision and bias adds pooled MDL, and tables containing the matrices tested and ILS data. 6)Added environmental as a key word

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    Work Item Status

    Date Initiated:
    08-16-2018

    Technical Contact:
    William Lipps

    Item:
    018

    Ballot:
    D19 (18-04)

    Status:
    Ballot Item Approved as D7573-2018A and Pending Publication

    Item:
    019

    Ballot:
    D19 (18-04)

    Status:
    Ballot Item Approved as D7573-2018A and Pending Publication