Dissipation Curves & Transfer Coefficients

VARS offers Dislodgeable Foliar Residue (DFR) studies in agricultural crops and Transferable Turf Residue (TTR) studies in turf.

We are experienced in the establishment of dissipation curves and calculation of transfer coefficients related to dislodgeable residue sampling.

Experience & Methodology

Our key personnel are trained to conduct DFR studies and develop crop and site specific study plans quickly and reliably. We use a precision leaf punch sampler for DFR studies or the Modified California Roller for TTR studies.

GLP & QA

All of our regulatory studies are conducted under and in complete compliance with current Good Laboratory Practices (GLP). We have a Quality Assurance (QA) auditor who is familiar with the specific requirements of the field and laboratory GLP requirements.