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How should you make a spraying solution?

How to make a spraying solution

Written by Jan-Paul de Wit | Last update: 15-09-2020

Mixing a spraying solution and filling the tank of a spraying trolley is not without risk. In fact, the risk of exposure is the highest, because you are working with the concentrated chemicals. That is why it is important that you mix the spraying solution and fill the tank in a safe way. Our specialist gives tips.  

Tips on making a spraying solution and filling the spray tank.

  • Always read the label and safety data sheet of the product to be used before you start mixing the spray liquid. There, the health risks and the dosage are mentioned among other things.
  • Make sure you know where the eye showers/EHBO-boxes/etc. are in case of an emergency. These spots can be recognized by the warning signs.
  • Calculate in advance the required amount of spray liquid, so that you end up with as little (or preferably no) residual liquid as possible. Also make sure that you have your spraying equipment checked regularly and that you clean and check nozzles regularly, so that the output matches the calculated amount of spray liquid. 
  • While measuring and weighing the crop protection product and filling the sprayer, avoid any direct contact with the crop protection product.
  • Never perform work involving crop protection agents without personal protective equipment. Hands and forearms are most at risk when creating and filling spray liquid.
  • Never leave others around while mixing and filling, especially when they are not aware of the dangers and health risks of crop protection products.
  • Take your time for mixing. Careless or hasty dosing can lead to spillage, which in turn can lead to skin contact or inhalation.
  • First fill the mixing vessel or tank with the required amount of water and then add the crop protection product. Pour the product gently from a height of no more than 20 centimeters.
  • When filling, avoid spilling or overflowing of the tank. Therefore, use the filler funnel of the sprayer or a large funnel that fits well in the opening of the tank.
  • When you start creating and filling the spray liquid outside, make sure you are not in a windy location.


Residual liquid

During filling, rinsing and cleaning of spraying equipment, residual liquid is created. Residual fluids and rinse water should never be discharged into the sewer or surface water. These liquids are harmful to aquatic life.

To prevent residual fluids from entering the sewer or surface water during filling, rinsing and cleaning, please take the following into account:

  • Always carry out this work on a hardened surface and collect the spilled liquids.
  • Rinse the material you used for mixing and filling the spraying equipment at least three times. In doing so, collect the rinse water.
  • If you have created too much spray liquid, you can spray it over the crop during the next spray action. If you do not do this and you want to get rid of the spray liquid, you have to store it.
  • Residual fluids can be stored in a dirty water silo. The water in the dirty water silo can then be purified by means of mobile water purification.

Questions about creating and filling your spraying solution.

Do you have questions about creating and filling your spraying solution, or would you like tailor-made advice? Then please contact crop protection specialist Jan-Paul de Wit using the form below. We will contact you as soon as possible - on workdays even within 24 hours.

Jan-PaulAbout Jan-Paul de Wit

Jan-Paul de Wit is specialist in Integrated Pest Management. He helps and advices growers on how to improve their crops and how to fight diseases, viruses and pests. He advises on the best products to use so that they optimally match the objectives of the grower, as well as the crop, greenhouse and environment.

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