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Fluorometry Lab Surpasses Milestone

Jan 8, 2026

The Stone Fluorometry Lab concluded 2025 by surpassing the milestone of 15,000 fluorometry samples analyzed!

Over the past five years we have conducted 13 spray drift deposition studies using tracer dyes, totaling more than 200 individual study treatments. Our in-house Good Laboratory Practices (GLP) compliant fluorometry laboratory is supported by robust SOPs, a rigorous QA/QC process, meticulous documentation, and highly trained and experienced staff.

The use of fluorescent tracer dyes for drift deposition studies is approved in EPA’s Spray Drift Test Guidelines 840.1200, and endorsed in spray drift testing standards from the American Society of Agricultural and Biological Engineers ASABE S561.1 and the International Organization for Standardization ISO 22866. Fluorometric analysis of drift samples conducted in accordance with GLP can reduce analytical turnaround time and study costs compared to active ingredient residue analysis, while maintaining data integrity and regulatory defensibility.

If you are considering a spray drift study for your active ingredient, we encourage you to contact us to learn more about the Stone Fluorometry Lab and the seamless integration of field operations and laboratory analysis for a high-quality, cost-effective solution that meets the data expectations of regulatory agencies.

Contact Ben Brayden, Agrochemical Fate & Exposure Service Leader, to learn more about lab services.