english translation

(Translated from original letter)

COGENERACIÓN BAÑERES                        E03450 BAÑERES – Alicante - Spain

Bañeres 15^th January 2001

Dear Sir,

As owners of the installation "COGENERACION BAÑERES S.L" which is located in Bañeres de Mariola (Alicante), we certifie that fuel oil has been used with the "rb bertomeu" additive beco F1 / ASF in our plant for exactly 5 years.

We confirm our evaluations, which were included in our letters of October - 1996 and of January - 1999, that we are fully satisfied with the results obtained from the use of this additive, even after carrying out tests with other fuel  oil additives on the market.

Recently, the engine of our plant, DEUTZ MWM type PV 640.12 M, with a power of 4,9 MWe, reached 50,000 operation hours during which there has been a very low level of corrosion in the exhaust valves and a corrosion level of practically nil in the inlet valves and in the turbo.

In the process aspects, again we emphasise the reduction of fuel oil sludge (about 50%) and the consumption saving per kWh produced (nearly 1%), which we obtained by using the additive "rb bertomeu" beco F1/ASF, which added to the maintenance saving due to lack of corrosion, justifies economically, according to our evaluations, the treatment that we apply to the fuel oil.

As in previous occasions, we authorise the use of the present letter for reference purposes.

(Translated from original letter)

COGENERACIÓN BAÑERES                        E03450 BAÑERES – Alicante - Spain

Bañeres 18^th January 1989

Dear Sir,

Per your request, we certify that we have been using for several years your fuel oil additives and your techinical services with excellent results in our power plant, which has a 4,900 MWa engine burning fuel oil No. 1 and that has surpassed the 36,000 working hours.

We also state that, as you already know, we have made several tests with other brand's fuel oil additives, with less satisfying results, especially preventing corrosion of engine exhaust valves.

Comparing the periods where we have not been using "rb bertomeu" additives, we highlight the following improvements that the "rb bertomeu" beco F1/ASF treatment delivers:

A) Reduction in fuel oil consumption by 0.5% aproximately per produced KWh.

B) Reduction of +20% in the ammount of fuel oil sludge found in the purifier. The total reduction of sludge, considering the ones accumulated in the storage tank, is much higher, and although we do not have exact data, we evaluate the total reduction in about 35 or 40%.

C) Excellent results in reduction of corrosion in the engine's exhaust valves, which reduces the ammount of replaced valve spindles and valve baskets to a very low figure.

D) Less ammount of solid sludge in the valves, exhaust pipes and turbos, which almost eliminates the need of cleaning tasks in order to keep the right flow of inlet air necessary for the combustion.

All the above is certified per your request and as a follow-up of our October-1996 letter. We authorise the use of the present letter for reference purposes.