• Surfactant

• Drift Reduction

• Deposition Aid

• Activator

• Acidifier


Capstar is a unique tank-mix adjuvant formulation containing water conditioners, surfactants, activators, deposition, acidifying agents and antifoam.


Capstar reduces the antagonistic effects of hard spray water. Spray water containing dissolved minerals can have a negative impact on herbicide efficacy.


Capstar's specialized formulation will lower the pH of the spray solution which helps increase the effectiveness of weak acid herbicides such as glyphosate.


Capstar suppresses off-target drift and enhances canopy penetration by providing a more uniform spray pattern, thereby increasing spray deposition and coverage of targeted surfaces.


Capstar contains a nonionic surfactant system to optimize wetting and spreading of the spray droplet. 


Capstar slows spray droplet drying time to minimize droplet evaporation and improve absorption during low humidity conditions. 


Capstar contains antifoam to reduce troublesome foam.


Use Rates

Do not use Capstar with sulfonamide herbicides or sulfonylurea herbicides or other mixtures that cannot tolerate low pH levels.

Use 2 quarts (0.50% v/v) to 3 quarts (0.75% v/v) of Capstar in 100 gallons of spray water. For enhanced deposition and drift suppression, use the higher rate.


Refer to specimen label and safety data sheet for more information about this product.

Demo - Spray Water Ph

Demo - Spray Droplet Surface Tension

Demo - Suppressing Off Target Spray Drift

Demo - Testing For Surfactant Efficacy

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