Biological de-rusting

Rust mainly consists of iron(III) oxide and iron(II, III) oxide in which iron is trivalent or divalent. Iron is an essential trace element for growth of microorganisms. Certain microorganisms have throughout evolution developed specific strategies for iron uptake to survive under low-iron conditions. For this purpose, these microorganisms form siderophors (biological chelating agents), which are able to complex Fe3+-ions with high affinity, and dispense Fe2+ on the microorganism cell membrane. Compared to conventional pickling processes, the biological rust removal is harmless/ safe for health and the disposal into wastewater is able without any concerns to the environment. In addition, the manufacturing process saves energy and is environmentally friendly.


Bio-Derosta® advantages at a glance:

  • No wear of tools
  • No impairment of paints or plastic
  • De-rusting at a skin friendly pH
  • No adverse effects on the health of the participants due to corrosive vapors or dusts
  • Decrease of the risk potential at work
  • Free an unproblematic disposal, the product is 98% biodegradable
  • Reduction of energy consumption and CO2 emissions during the production and de-rusting process






Prices/ kg

Bio-Derosta® L-1

Biological complexing agent for removal of annealing colors.

Concentrate to make dipping baths.


On inquiry

Bio-Derosta® L-3

Biological complexing agent to de-rust metal parts.

Concentrate to make de-rusting dipping baths.


1 kg - 8.00 €/kg

3 kg - 7.00 €/kg

5 kg - 6.50 €/kg

10 kg - 5.95 €/kg

25 kg - 5.65 €/kg

200 kg - 4.95 €/kg

1000 kg - 3.50 €/kg

Bio-Derosta® L-6

Mixture of biological complexing agents and buffer substances for de-rouging.

Concentrate to make dipping baths.


On inquiry

Bio-Derosta® gel C-1

Biological complexing agent to de-rust metal parts.

Gel form


1 kg - 9.95 €/kg

5 kg - 7.95 €/kg