The different versions were compared through different empirical means. The main test of accuracy in the residue analysis
entailed measurement of trueness through recovery experiments
and precision from replication (intraday and interday). Other
aspects included analytical scope and concentration range, which
were assessed by the range of analytes and matrices included in
spikes at different concentration levels. Practical issues of sample throughput, ease of performance, costs, safety and waste
generated were evaluated by the analysts. Ruggedness was determined by measuring matrix effects and instrument performance
over time. Analyst performance was done by verifying that the