Description:

Trip Blank Field Lot Identifier is used in ERPTools to relate a lot of normal and derived QC samples (collected in the field) to their related trip blank(s).  There will only be an entry for normal and derived QC samples that are associated with a trip blank. This field will be left blank in the sample record for the trip blanks themselves.   The format for the TBLOT field entry is [DDMMYYNN] where DD is the numeric date of the month, MM is the 2-digit month, YY is the last two digits of the calendar year, and NN is the sequentially assigned sample number (SAMPNO) of the blank sample.  A COOLER value must be assigned for each Trip Blank and all samples sharing the same COOLER.

See LOTCTL Numbers for examples and further discussion.