12 Oil Spill identification - Round Robin 20045 
The original reports will be combined in a final report, together with an 
evaluation of the results. 
Time schedule 
May: 
June: 
July/August: 
September: 
Request for participation 
Delivery of the samples. 
Reports have been returned. 
Final report will be sent to the participants. 
We hope it will be possible for everybody to analyze the samples and make a 
report within two months, although we know that most of us will have a 
vacation in that period. 
Costs 
Last year RIZA hasn’t asked a contribution for the costs of organization and 
reporting. Due to the number of laboratories participating and the time 
needed, which was quite more than expected, we ask this year a contribution 
of €500. 
Coded results. 
It’s the intention to mention participants and their results. It has the big 
advantage, that information can be shared more easily. If this is a reason for 
you, not to join the round robin please inform me. You can participate 
anonymously. 
Participants 
This request is sent to Dutch inland water labs, participants of CEN/BT/TF 
120 and participants of RR2004 and some other labs working in this field. 
If you know other labs that like to join the round robin, please inform me. 
If you are willing to participate in this round robin, please return the register 
form by post or fax. 
Reactions of one local authority (Dutch inland water lab), the 
Netherlands Forensic Institute (NFI), one Brazilian and eight European 
laboratories were received. 
None of them wanted to participate anonymously. In chapter 2 the 
participants will be mentioned. 
1.2 Samples 
At the beginning of August the samples were sent to the laboratories 
with the following letter enclosed: 
Dear all, 
Enclosed you will find 4 samples