One will wish to know that the fuel supplied does comply with the standards specified and this is ascertained by taking a representative sample at the time of delivery. Surprisingly, there is no ISO standard for sampling although the International Standards Organisation has been trying to produce one for more than a decade. The nearest the industry has reached to this goal is a code of best practice which bears the number 13739 and many ship owners and managers insist that their personnel adhere to this. The important thing is for the supplier and buyer to agree how sampling takes place and to ensure that this is adhered to and that the samples are duly sealed in front of witnesses from both sides. Any disputes are likely to come along only when the fuel is in use. It is customary to take the samples at one or other end of the actual delivery hose and there are various ways to extract the sample ranging from automatic devices to less sophisticated methods. It is important to take an average sample. When one considers how vital it is to ensure the correct quality and grade of fuel are delivered it seems surprising that more effort has not been devoted to agreeing a standard but when approaching practitioners the response is that the present methods seem to work so there is no strong incentive to change. The exception to this is in Singapore which probably supplies more bunkers than any other port. has always shown enthusiasm towards setting a standard and as recently as 2002, adhering to the Singapore Standard became mandatory. One particular point is that all sampling there has to take place at the ship’s end of the delivery hose. This makes legal sense as this is the point at which ownership of the oil (title) changes.