Van Iperen Oligo Iron-DTPA 6% Liquid is a pure an highly concentrated liquid Iron fertilizer, free of Sodium. Iron DTPA is adviced for hydroponics. Our product is a stable, translucent solution and is recommended at different phenological stages. The high level of Iron in our formula improves the production of chlorophyll.

  • Gives a strong apical zone, free of chlorosis
  • Iron 100% chelated and fully available up to a pH of 7
  • Developed for soilless grown crops
  • Recommended in case of recycled water with UV-sterilization


  • Clear solution, highly concentrated
  • Transparent yellow liquid
  • Easy to handle and apply


In 1.000 l stock solution Fe in g Fe in mmol
1.0 L 76 1.36
5.0 L 380 6.80
10.0 L 760 13.61
15.0 L 1140 20.41

Other dosage Instruction

The chelating agent DTPA is the most resistant to photodegradation and ensures a rapid and complete absorption of iron through the plant with a visible effect of the treatment after a few days. The high concentration of Iron allows to reduce in a short time the problems of deficiency and therefore to improve the photosynthetic activity of the crop.
Directions of use: choose and apply the appropriate dosage according to cultivar need, phenological phase, temperature.
Do not mix with alkaline products.

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Compatible with other fertilizers. The pH of the tank solution should be above 4.

Fertilizing Knowledge

How to choose an Iron chelate?

There are many options to add Iron to your crop. The most efficient way is chelated Iron for its stability, availability for the plant and its easiness to use. But choosing among the different solutions can be a challenge. How to choose? We can help you!

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