Optimal Fuel Quality - Reliable Power | Keeping the Lights on

Contaminated diesel is a huge problem for many industries which rely on good quality fuel to run well. At Njord Filtration, we know that many of our clients have experienced problems such as engine breakdown, fuel starvation and filters which have become clogged or blocked over time. Other common problems with poor quality diesel are waxy deposits that are found in the fuel, or water which is suspended in the fuel – something that can cause problems of bacteria build-up. In order to overcome all of these difficulties, a diesel polishing system is needed. Although a small diesel polishing system is enough for limited amounts of fuel, the long time it takes to process means that a truly industrial solution is needed for larger quantities of diesel. At Njord Filtration, we have the capacity to take on all diesel polishing needs and return high-quality fuel on a timely basis.

When particles build up in diesel they can become a nuisance for the smooth running of engines. By polishing, or filtering away, particles which are larger than about ten microns, many of the problems associated with contaminated fuel are simply done away with. Remember that this is not simply down to the combustion of the fuel, but its smooth flowing through an engine which counts. Large particles in diesel mean that internal filters often block up and the fuel ends up not get to where it is needed in sufficient quantity, or with the right degree of efficiency. Likewise, water which is suspended in diesel can allow unwanted bacteria to develop. Bacteria in diesel often leads to it appearing more like sludge and this can ultimately cause excessive wear and tear on components that it comes into contact with.

Based in Belgium, close to the border with the Netherlands, Njord Filtration has a Europe-wide customer base. Able to conduct diesel polishing services for all sorts of industrial sectors, all that is needed to find out more is to fill in the web form on the 'Contact Information' page of our website. Alternatively, look out for promotions on the 'Special Offers' section of the website, where many bargains are to be found.

Problem Solver

Our solution


If there are problems with filters, injectors, pumps or diesel quality in general, it is advisable to take a bottom sample from the tank(s) and have it analysed. Sometime the diesel is so filthy that the conclusion is obvious: the diesel must be cleaned.

We offer a sampling and analysis service as well as sampling sets to take your own samples. These can also be sent to us for analysis, or can be tested for microorganisms with Liqui-Cult.


If contamination of the diesel with water, sediment and/or microorganisms is discovered, it is important to remove the contamination from the tank(s) and to bring the fuel back into optimal condition.

To this end we offer a tank and fuel cleaning service as well as the equipment to recondition the fuel yourself. If we clean the tank and fuel, before and after samples are taken to demonstrate the effect of service provided.


After the contamination has been removed, it is usually best to ensure that it cannot reoccur. With modern diesel, however, the chance of this is relatively high. There are a number of preventative measures, products and systems available for this. The choice for one of these is different for each situation, client and available budget.

We offer sampling services, complete fuel maintenance contracts and installation of preventative products and systems according to the KIWA BRL-K903-08 norm.
There are a number of options for the tanks as well as the engines/burners:


If so desired, the quality of the fuel with regard to water and sediment levels can be measured in-line in order to control the quality or to adjust the filtration system.

Njord provides: