Multi-function additive for
effective crop protection

• Stops water hardeners
• Regulates the pH value
• Optimises active substance absorption


PHFIX®forte multifunction adjuvant for effective crop protection

  • Stops water hardness
  • Regulates the pH-value
  • Improves active substance uptake
  • Automatically shows the pH value by a change in colour

Active substance: inorganic acid derivative, wetting Agent, colour indicator


  • The spray water can be adjusted specifically to the right pH
  • The integrated colour indicator shows when the spraywater has reached the correct pH value
  • This significantly improves the solubility of crop protection products and foliar applied nutrition products, especially with hard water filters and nozzles remain clear
  • Multi-tankmixes are stabilised and can be applied without any problems
  • The adjusted pH value is maintained after foliar fertilisers are added, the solution is buffered – i.e. no more loss of efficacy
  • The wetting agent provides optimum spreading and uptake of active ingredients, adding other adjuvants is not necessary
  • Use with growth-regulators, contact- and systemic insecticides, fungicides, herbicides, foliar feeds (e.g. Glyphosate and phenoxies)

Product description

Most active substances react positively to a lowering of the pH in the spray water to pH 5 and the elimination of water hardness.

PHFIX®forte lowers and buffers the pH value of the spray water. PHFIX®forte colours the spray solution pink as soon as an optimum pH value of 4.5 – 5.5 is reached. With the addition of PHFIX®forte into the spray solution, a pH measuring device, litmus paper or rough estimation are no longer required.

The utilisation of PHFIX®forte neutralises the salts dissolved in hard water and the solution is acidified. This prevents undesired complex formation of crop protection active substances with alkaline ions.

Hard water degrades crop protection active substances very rapidly: Already after two hours, 50% of the active substance quantity can be degraded by hard water in the spray tank. For some active substances, 1 hour in the spray tank with hard water can already be too much.

Two reaction cycles, which ensure smooth decomposition of chemical active substances in nature, already begin when the spray tank is filled:

  1. alkaline hydrolysis
  2. salt antagonism

PHFIX®forte is the first adjuvant that stops both reactions immediately until the active substance is in the leaf.

PHFIX®forte is the intelligent additive with multiple Benefits:

  • Reduces and buffers the pH of the spray solution
  • Integrated pH indicator
  • Penetration adjuvant for perfect wetting and uptake
  • Prevents salt antagonism in hard spray waters

This results in the best possible performance crop protection products and reduces the possibility of phytotox.

Product use

PHFIX®forte is used to ensure the efficacy of insecticides, growth regulators, leaf-active herbicides and fungicides.

The adjuvant has a increased advantages when using hard spray water and/or water with pH values above 7.0.

When PHFIX®forte is used, other adjuvants, such as oils or wetting agents become redundant.


PHFIX®forte can be used with all crop protection products and foliar fertilisers.

Warning: The addition of PHFIX®forte to tank mixes with copper-based fungicides, particularly copper oxychloride, is not recommended because it can cause phytotox. In tankmix with sulfonylureas, first bring the product in solution and then slowly lower the pH down to “yellow”. (pH 6)

Plant tolerance

PHFIX®forte mixtures with insecticides, growth regulators, herbicides and fungicides are compatible also under different climatic conditions.

Instructions for use

PHFIX®forte must always be added first to the spray tank, before other compounds are added to the tank mix.

PHFIX®forte contains a pH-sensitive indicator that colours the spray water pink when the optimal pH value of 4.5 – 5.5 has been achieved.

The determination of the precise quantity of PHFIX®forte to be added should always take place in a separate container or bucket, and not in the dark spray tank itself. (See the colour table for more info)

Soft water only needs a small quantity of PHFIX®forte and rapidly shows the pink colour when the desired pH has been reached. Hard water requires a higher concentration of PHFIX®forte. In this case, the colour changes in stages from yellow to orange to a stable pink (pH 4.5 – 5.0). With hard water, it is recommended to leave the agitator running while adding  PHFIX®forte until the colour has changed.

  1. Determine the pH value and water hardness for the water on your farm.
  2. Using the table, calculate the required quantity of PHFIX®forte to be added.
  3. As soon as the solution exhibits a stable pink colour, no more PHFIX®forte must be added.
Water quality (hardness) Quantity for pH 5 in 10 l of water Quantity for pH 5 in 100 l of water
Soft water 2,5 – 3 ml 25 – 30 ml
Medium-hard water 3,5 – 7 ml 35 – 70 ml
Hard water 7,5 – 15 ml 75 – 150 ml

Container sizes

Item numberPackage sizePallet unit
88064012 x 1 litres480 litres
8806424 x 5 litres800 litres
8806441 x 20 litres640 litres
8806461 x 640 litres640 litres
8806481 x 1000 litres1000 litres