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STARMARINE BUFFER (Bufferclean, Drew BC)


* Suitable for the removal of traces of lead and iron stains from zinc silicate coated tank surfaces after transport of leaded gasoline.

* Suitable for the removal of traces of chloride and sulphide.

* Safe StarMarine Buffered pH of 5.5 for application on zinc-silicate coated tank surfaces.

* Gives a good cleaning result with a reduced cleaning time.


The ordinary cleaning method with a synthetic soap takes a lot of time and is insufficient. A mild complexing acid solution in combination with synthetic soap gives a much better cleaning result. StarMarine Buffer is used as a final cleaning procedure when leaded gasoline must be removed or when the tank has to be completely chloride or sulphide free, e.g. for shipping pure chemicals.

Directions of use

After the normal cleaning depending on the nature of the last cargo and subsequent rinsing with water, the cleaning with StarMarine Buffer can start. Never dilute with river or seawater. Fill a tank for 1/100 part with water and add 10% StarMarine Buffer at maximum. The solution is heated by means of heating coils in the tanks. The tanks are washed with a loading pump, after which the used solution is recycled to the mixing tank. Usually, one solution is used to wash 2 - 3 tanks. StarMarine Buffer is circulated with a limited contact time of 30 - 45 minutes before rinsing at a temperature not to exceed 45°C. Of essential importance for passing the chloride test is a final rinse with chloride free, if possible hot, water.

If necessary, repeat this cleaning procedure.


Mild acid, yellowish liquid with a characteristic odor. Completely miscible with water. for use on all common metals, specially developed for cleaning zinc-silicate coatings.

Specific gravity (20°C) : 1.03

Flash Point               : none

pH (conc.)                : 5.3 - 5.5

pH (10% solution)         : 5.5


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