Based in Germany. schülke is an international expert and pioneer in microbiology, and an acknowledged leader in hygiene, infection prevention and chemical preservation

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The grotamar® product range is designed to protect diesel and diesel blends from microbial contamination – in fuel tanks and storage facilities, in engines in boats, ships and trucks, and in refineries. 

Highly contaminated fuels can be treated with a shock dose of grotamar® to prevent further microbial growth, fuel quality degradation, and microbiologically influenced corrosion (MIC).  Continuous and proactive treatment with grotamar® is recommended to prevent fuel contamination.

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Our customers

We provide new, innovative chemistry products based on cutting-edge research that meet today’s strict environmental, technical and quality imperatives.


Our experts provide advice and assistance from our labs in Germany, the USA and the UK.


We work closely with our customers, providing the support needed to ensure their success.



Find out more about our products for the oil and gas industry

oil and gas
Use biocides safely. Always read the label and product information before use. Keep out of reach of children.
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