STP1102

    Performance Testing of Selected Test Kits for Analysis of Water Samples

    Published: Jan 1991


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    Abstract

    Chemical testing kits represent a convenient, reliable, inexpensive and fast option for chemists testing various types of aqueous samples including drinking water, ground water, wastewater and industrial process streams.

    The three basic types of test kits are described. Easy-to-use chemical test kits are one type of kit that has found favor among its users. There is, however, a paucity of factual information about the accuracy and precision of these chemical test kits.

    Data for selected CHEMetrics'[1] easy-to-use test kits are presented. Results of tests of colorimetric, photometric and titrimetric methodologies are described, including comparison data with EPA methods. Tests of nitrite-nitrogen, lead and quaternary ammonium compounds show that accuracy and precision may in some cases be lower than that of the standard method. The advantages and disadvantages of easy-to-use test kits are examined and the importance of good quality control in manufacturing is stressed. The benefits of kit tests are believed to outweigh any technical disadvantage provided the responsible chemist assures that the kit's accuracy and precision are adequate for the intended purpose.

    Keywords:

    accuracy, chemical, kits, precision, quality, testing, water


    Author Information:

    Spokes, GN
    Technical ManagerR&D chemist, CHEMetrics, Inc., Calverton, VA

    Bradley, J
    Technical ManagerR&D chemist, CHEMetrics, Inc., Calverton, VA


    Paper ID: STP17596S

    Committee/Subcommittee: D19.05

    DOI: 10.1520/STP17596S


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