Crop Care
Suspoemulsion (SE) formulations are used to combine two active ingredients with very different physical properties into one formulation. They are a combination of suspension concentrate (SC) and concentrated aqueous emulsion (EW) technologies.
The advantages are that it is possible to formulate multiple active ingredients together, broadening the spectrum of activity and eliminating the disadvantage of tank-mix incompatibility.
The advantages are that it is possible to formulate multiple active ingredients together, broadening the spectrum of activity and eliminating the disadvantage of tank-mix incompatibility.
Benefits
- Incorporates multiple active ingredients with different solubilities or melting points
- A mixture of active ingredients is often used to provide a broader spectrum of pest control
- Formulating active ingredients together eliminates the need for tank mixing which can lead to incompatibility in the spray tank
Limitations
- The surfactant system needs to support both an insoluble organic solid and a liquid
- Partial solubility of the active ingredients in water or oil phases causes stability problems
- Generally they are highly loaded so can have long term stability issues if the correct surfactants are not used
SEs can be difficult to formulate. However, to avoid breakdown processes such as flocculation, crystal growth and coalescence, we advise using polymeric surfactants. Improved anchoring and colloidal stabilisation are key to meeting the required performance criteria.
We recommend developing stable EW and SC formulations separately. After you achieve stable formulations we recommend combining them. In order to reduce instability in the final SE formulation we advise the use of the same surfactant system where possible.
We recommend developing stable EW and SC formulations separately. After you achieve stable formulations we recommend combining them. In order to reduce instability in the final SE formulation we advise the use of the same surfactant system where possible.