Particle & Droplet Size Analysis · Laser Diffraction
A value of just a few micrometers
determines spray drift, spray pattern, and regulatory approval.
BioGenius determines the droplet and particle size distribution, including MMAD, of your spray products via laser diffraction – from trigger and pump sprays to spray drift classification for plant protection products. The MMAD value is derived based on laser diffraction and serves as a guiding screening indicator for the respirable fraction. Reliable, GLP-compliant, and regulatorily classified.
Laser diffraction according to ISO 13320
Spray drift classification according to CIPAC MT 187
GLP & NON-GLP
BPR · PPP · CLP/REACH (Screening)
Services at a Glance
Trigger & Pump Sprays
Real-world spray pattern analysis for deodorants, cosmetics, household products, and biocides.
The Risk
A value you cannot see – but every authority checks.
Whether a spray product works as intended or is classified as hazardous by inhalation is decided within a range of just a few micrometers.
Regulatory Uncertainty
Fine spray mists can be classified as inhalation-relevant under CLP/REACH and the Biocidal Products Regulation. Without reliable droplet size data from laser diffraction, there is a risk of inquiries or re-evaluations shortly before approval.
Project Time Pressure
Without early particle measurement, the discovery of a problem is delayed until the most formulation-intensive – and expensive – point of the project.
Analytical Methods & Validation
We provide support for analytical questions regarding spray products – using laser diffraction for everything from droplet size distribution and spray drift classification to guiding inhalation screening. If standard approaches are insufficient, we tailor the methodology and test design specifically to your formulation. Analysis can be performed on a project basis under Good Laboratory Practice (GLP) or, as required, under NON-GLP conditions.
Trigger & Pump Sprays
Application area:
Trigger and pump sprays, aerosols
Techniques/Methods:
Laser diffraction in the spray cone (real-time), high-speed imaging — ISO 13320, VDI 3491
Spray Drift Classification (PPP)
Application area:
Plant protection and biocidal sprays, application technology
Techniques/Methods:
Laser diffraction in the spray cone, droplet size distribution — ISO 13320, CIPAC MT 187, BCPC classification (very fine – coarse)
Inhalation Screening & MMAD
Application area:
CLP/REACH classification of spray products
Techniques/Methods:
Laser diffraction-based determination of MMAD and mass fraction < 15 µm / <100 µm as a preliminary screening indicator (Tier 1, no cascade impaction)
Spray Drift Classification & Inhalation Screening
Determination of the droplet size distribution of the spray mist, including:
- Dv10 [µm]
- Dv50 [µm]
- Dv90 [µm]
- Volume fraction below 50 µm [%]
Who it's for
Relevant wherever formulations are sprayed.
Biocides & Plant Protection
Spray drift classification and application testing for all PT classes and PPP formulations.
Cosmetics & Personal Care
Deodorant, hair, and pump sprays – droplet size for spray pattern and spray drift.
Household & Cleaning
Spray cleaners, disinfectant sprays, trigger and pump systems.
Chemical Industry
Formulation development requiring droplet and particle size characterization.
Let’s discuss your formulation – whether it’s a trigger spray, pump spray, or inhalation risk assessment. We will find the right measurement strategy for your product.