titer
A measured sample. (To draw a measured, representative sample from a larger amount is to titrate)
The term "titer" was found in the following pages:
Instrument database: Shimadzu Europe - LC-2010HT High Throughput HPLC
Instrument database: SPEX CertiPrep - 2000 Geno/Grinder
Instrument database: Shimadzu Europe - SIL-5000 HPLC Autosampler