TM05-02 Revision of the procedure for requesting laboratory matrix spikes

The purpose of this technical memorandum is to revise the procedure for requesting laboratory matrix spikes of analyses at the National Water Quality Laboratory (NWQL). Laboratory matrix spikes apply primarily to organic compound determinations, although laboratory matrix spikes for inorganic and organic analyses not listed in the following table can be provided as custom analyses. See the ‘Definitions’ section below for a discussion of terms used in this technical memorandum.