Aquamarine Distillate Fuel Improver Fuel Treatment

Aquamarine Distillate Fuel Improver for Ships

Aquamarine Distillate Fuel Improver is designed to improve several properties of modern
distallate fuels.

It controls the formation of sludge and inhibits corrosion whilst simultaneously improving lubricity.
This helps to reduce problems creating by filter clogging, sticking injectors and corrosive attack on fuel system components.


• Improves the lubricity of low sulphur marine diesel fuels
• Improves storage stability of fuels
• Fights corrosion
• Helps to prevent fuel injector fouling on board ship

Dosing Instructions

  1. Dose Aquamarine Distillate Fuel Improver into the feed lines. Product may be added to
    storage or blending tanks with adequate mixing.
  2. Add the product at between 1 litre per 4 tonnes of fuel.

Pack Size 25 Ltr.
Ref: DFI25

BWT Organic 4

BWT Organic 4 – Oxygen Scavenger – Low & Medium pressure marine boiler systems

BWT Organic 4 is an environmentally safe oxygen scavenger based on neutralised organic acids and volatile amines.

It removes oxygen from feed-water as well as forming an organic iron compound on steel surfaces. It will also protect copper surfaces.

BWT Organic 4 can be used in low and medium pressure systems.

Directions for Use

BWT Organic 4 should be dosed to give a pH of 9.0-10.0 in the condensate returns.

If hot-well temperatures are maintained above 80⁰C a condensate pH range of 9.0-9.5 should be sought, if temperatures are lower than this then condensate returns should be maintained at a pH between 9.5-10.

Dose Rate

An initial dose rate of 0.2 Litre/m³ of boiler water should be used.

This can be increased to 0.7 Litre/m³ for systems showing signs of corrosion for a few days.

BWT Organic 4 should be dosed continuously via a metering pump directly into the feed system or the exhaust gas economiser circulating pump discharge. BWT Organic 4 MUST NEVER BE SLUUG DOSED to a running system via a hot-well or by-pass feeder.

Pack Size 25 Litre

BWT Organic 3

BWT Organic 3 – Marine Low or Medium Pressure Boilers

BWT Organic 3 is a liquid blend of neutralised organic acids, corrosion scale and sludge conditioners for ship boilers.

This chemical product is designed for use in low or medium pressure boilers.

Polymer technology protects against scale, alkalinity is added to prevent corrosion and an organic compound is formed throughout the boiler to protect against corrosion.

Continuous dosing using a dosing pump is recommended.

It is also recommended to be used in conjunction with BWT Organic 4 which acts as an effective filming treatment on condensate lines.

BWT Organic 3 and BWT Organic 4 should not be mixed, so two separate dosing systems should be used.

Directions for Use

The boiler water should meet the following conditions

p-Alkalinity 150- 200ppm CaCO3

Chloride 100ppm max. for medium pressure boilers

Chloride 300ppm max. for low pressure boilers

pH 10.5 to 11.0

Conductivity 400-1000 micro Siemens/cm

Initial Dose 0.5 litre/metric  tonne of boiler water, then re-check dose to maintain pH and Alkalinity levels. 0.2 litres should be dosed/day to maintain treatment levels when combined with regular blow down.

About & Aquamarine Distributors 2020

Aquamarine Chemicals

Ship chemical maintenance & cleaning products,  test kits & chemical engineering support since 1992

CHEMICALS – Aquamarine supplies a full range of chemicals for use on board ship. A one-stop-shop, engine chemicals, boiler treatments, cleaning products, maintenance chemicals, toilet, pipework and galley hygiene

COOLANT – Our engine coolants meet the need for both traditional and modern engine coolants including aluminium approved products to suit different fuel types.

MARINE COMPLIANCE –  Products reflect the oceanic and environmental demands of today with reduction in emissions, biodegradable products, recyclable packaging, chemical disposal, BPR, IHM & IMO regulations and guidelines.

BOILER treatments and WATER SYSTEM products including Reverse Osmosis & Potable Water Chemicals.

Shipsan® Potable Water Safety Plans & Potable water management plans & products for management of Water Hygiene on board ship.

A full range of MARINE CLEANING products incorporate state of the art environmental technology with quality and well tested marine environmental MAINTENANCE  products that are effective in use.

Marine Engine Coolant Monitoring & Potable Water Monitoring systems.

Our technical team supervises and monitors your engine log sheets & we give a monthly audit report with any remedial actions and recommendations specific to your vessels.

 Cloud Technical Management for coolant, boiler treatments & Potable/drinking Water Management with our test kits

Lab Services and on-board – Testing, Recording, Monitoring

  • MBC, micro-biological testing of engine coolant, fuel oil, lube oil
  • Bunker testing
  • MBC in potable water
  • Legionella lab tests and portable accurate and industry accepted tests, compliant with current Legionella guidelines and PHA & MGN  guidelines, rules and regulations.
  • Coolant and boiler specific parameter on-board test kits

Chemical Know-how

  • Specialist Chemical company focusing totally on chemical products and applications Aquamarine for the marine industry
  • Formulating and producing chemical products since 1992
  • Working with shipowners, managers, superintendents to find the right solution for the right application if it is not available within our current range of products.



UK Head office: 00 44 1684 290077



ISO 9001 Certified & ISO 14000 Accredited


Aquamarine Distributor Opportunity 2020

Distributor Opportunities 2020 – Aquamarine Marine Ship Chemical Sales

  • Aquamarine is always expanding &  interested in looking for new Distributor partners.
  • Our distributors are a carefully selected dedicated team of well-established marine suppliers who are interested in maximising business potential and committed to offering their customers the best possible service together with our products which are manufactured in the U.K.
  • There is a specific opportunity in 2020 for new partners who are prepared to invest for maximum return.
  • We are specifically looking for key port Distributors worldwide.
  • Please contact us for a preliminary introduction by email,  or call 00 (44) 1684 290077.

Aquasteel Specific Distributors – Rust Converter Treatment

  • There is an opportunity worldwide for Aquasteel Distributors for our unique and successful Rust Converter and Primer product
  • Aquasteel is a multi-market product for Marine, Industry, Construction, Automotive and retail.

Please contact us for a preliminary introduction by email, or call 00 (44) 1684 290077.

Aquamarine Product Comparison

Boiler Water &
Condensate Treatments
Liquid Boiler Water
Treatment Extra
Liquitreat AGK 100
Condensate Controller Condensate
Boiling Out Compound
Hardness / Phosphate
Hardness Control Adjunct B
Sulphite Oxygen
Cat Sulphite CSL (Liquid) Catalized Sulphite (Powder)
Boiler Coagulant Boiler Coagulant Liquid Coagulant
Alkalinity Controller Alkalinity Control GC
Combitreat B.W.T. POWDER
Autotreat Drewplex AT
Oxygen Scavenger Plus Drewplex OX
Engine Water &
Evaporator Treatments
Corrosion Controller CWT Rocor NB Liquid LIQUIDEWT, MAXIGUARD
Corrosion Controller
Aluminium Corrosion Controller CWT XLICooltreat AL & Engine Water Treatment 9-111AL XLI
Universal Antifreeze + Test Meter
Evaporator Scale
Evaporator Scale
Biological Growth
CW25B Chilled Water
Plant Treatment
Cleaning & Maintenance Products
Aquawash – General Purpose Degreaser & Ultrasonic Cleaning Fluid Aquabreak PX Edge
QuickBreak – Solvent Engine Room / Bilge Degreaser Cleanbreak DREWCLEAN 2000, AMEROID OWS
Fast Dry Electrical Cleaner Electroquick NF Drew Electric 2000
Carbon Remover – Combined Air Cooler Cleaner Carbon Remover Carbon Remover
ACC Plus ACC Plus
Air Cooler Cleaner / ACC Air Cooler Cleaner ACC-9, ACC/ME
De-scaling Powder Descalex Saf acid
Diesel Engine Cooling Water Inline Cleaner
Rust Remover &
Purifier Disc Cleaner
Disclean Ameroid DC
Natural Zest Cleaner Enviromate 2000
Aqua-Potable Water
Red Rust Treatment
Potable Water
Descaling Liquid Descaling Liquid DESCALE IT
Oil Spill Dispersant – Type 1 Seacare O.S.D. OSD/LT
Approved Type II & III OSD High Performance Oil Spill Dispersant Seacare Ecosperse DREWCLEAN EOSD
Tank Cleaner H.D. Tankleen plus, Seaclean TC#4
H.D. Cement Descaler
Aqua Engine Mate (750ml Spray)

Boiler Coagulant

Boiler Coagulant

AQUAMARINE BOILER COAGULANT is a liquid sludge conditioner designed to  prevent the formation of solid and sticky deposits in boilers.

How does it work?
BOILER COAGULANT is a physical dispersant product that prevents the formation of large particles in liquid.

  • It functions by keeping solids as small particles
  • Prevents agglomerations from forming.
  • Keeps Boilers Clean
  • Keeps Sludge dispersed for efficient blow-down.

BOILER COAGULANT is primarily used in conjunction with HARDNESS / PHOSPHATE CONTROL. The solids can be removed by the blow down as usual.
In addition BOILER COAGULANT can help to remove small amounts of oil contamination if it arises, by blow down. Oil contamination must of course be stopped if it has arisen.

Results of use
BOILER COAGULANT prevents the formation of adherent deposits and sludges in boilers and thereby reduces clean-downs.

Dosing Instructions
Normal dosage is 20ml daily/tonne of boiler water capacity. Typically this equates to 0.1-0.3 litres/day. This is the recommended initial dose.
BOILER COAGULANT should be dosed directly to the boiler via the bypass pot feeder installed in the boiler feed water line.

25 Litres
Product Ref. 0056

Ship Boiler Coagulant

Sulphite Oxygen Controller

Sulphite Oxygen Controller

SULPHITE OXYGEN CONTROLLER is a liquid sodium sulphite product used for oxygen scavenging in low and medium pressure marine boilers.

How does it work?
SULPHITE OXYGEN CONTROLLER reacts rapidly with dissolved oxygen in the boiler to form inert sodium sulphate. this prevents damage caused by oxygen pitting and corrosion in the boiler. Oxygen Scavenger is a convenient to use liquid oxygen scavenger recommended for the complete removal of oxygen from deaerator heaters, feedwater storage areas, feedwater lines, ship condensate return lines, boiler internals and closed recirculating water systems.
The product is dosed to give a reservoir level of sodium sulphite in the boiler. If the reserve drops below a minimum level then oxygen corrosion will occur. It is therefore essential to maintain a level at all times. The product is used as part of a boiler water treatment programme.


Results of use
The interior of the boiler is protected from oxygen corrosion attack. However please note that extra solids are produced in the process so additional blow-down will be required.

Dosing and Sampling
A reserve of 30-50ppm sulphite (Aalborg recommend 30-60 p.p.m) should be maintained in the boiler. SULPHITE OXYGEN CONTROLLER should be dosed continuously to the boiler by means of a metering pump into the feed line after the recirculation line. Continuous dosing can also be achieved by dosing into the hotwell to a point as close to the feed water pump suction as possible, although efficiency is adversely affected by low hotwell temperatures.

A representative sample of boiler water must be obtained, at an interval set by experience in operation of the boiler. The sample should be taken after the regular blow down and analysed immediately. The target usage is 30-50ppm of sulphite. The product should be applied separately to CONDENSATE CONTROLLER and should not be mixed with any alkaline treatment.

18 p.p.m of Oxygen Scavenger are required for each p.p.m of dissolved oxygen, plus a slight excess residual for testing purposes.
Dose per M³ feed = (18 x p.p.m Oxygen) + (________65__________)
Boiler concentration factor

This formula will give 30 p.p.m sulphite as Na²So³
Where Feed temp = 80°C then p.p.m Oxygen = 2.9 p.p.m

Oxygen Scavenger liquid may be fed directly from the shipping container or diluted with clean condensate in a chemical mix tank. It is compatible with most boiler chemical additives except filming amines. Minimum agitation is suggested to prevent premature activation of the oxygen scavenger with oxygen (air) captured by mechanical action at the solution interface. Covered mix tanks or floating plastic plugs are desirable. It may be dosed in conjunction with Liquid Boiler Water Treatment PLEASE TAKE SPECIAL NOTE: DO NOT ADD NEAT LIQUID BOILER WATER TREATMENT AND SULPHITE OXYGEN SCAVENGER TOGETHER. Typically the neat sulphite Oxygen Scavenger should be added to pre-dilute Liquid Boiler Water Treatment in a mixing tank. A typical mix would be for a 100 litres of pre-mixed treatment: 75 litres water, 25 litres Liquid Boiler Water Treatment and 3 litres of Sulphite Oxygen Scavenger.

Oxygen Scavenger is controlled by maintaining a fixed sulphite excess of not less than 30 p.p.m in boilers or 3 p.p.m in feedwater lines, as detectable sulphite using a reagent dropper method or standard titration technique. Aalborg recommendation is 30 -60 p.p.m. Please check specific manufacturer’s instructions as they may vary.

Avoid direct contact with skin and eyes to prevent mild irritation. In case of accidental contact, flush area with water, and seek medical attention. Product should not be ingested. Please refer to Material Safety Data Sheets for detailed handling and storage information.

SULPHITE OXYGEN CONTROLLER is an catalysed sulphite oxygen scavenger used as part of a boiler water treatment programme in low or medium pressure boilers.

Pack Size – 25 litre Drum.
NSN J150-6810-99-378-4863 Product Ref. 0055

Hardness / Phosphate Control

Hardness/Phosphate Control

• This chemical product is a dry powder product used for hardness reduction and phosphate control in boiler water systems
• Eliminates calcium scale problems
• Phosphate levels are optimised
• Hardness salt forms are easily removed by blow down
• Can be used in all ship boiler water systems

This product is formulated to give an optimum phosphate level within boiler water systems. This ensures correct hardness levels at all times.

A representative sample of the marine boiler water must be regularly obtained and tested for phosphate levels. The use of impure feed water will influence phosphate demand. The powder should be dissolved in warm water (50°C) at a ratio of 1 part to 20 parts water and then fed into the boiler system by a by-pass feeder.


These aReference recommended limits for levels of treatment.

They are not intended to replace either shipping company instruction or boiler manufacturer’s policy.

NSN J150 6850-99-834-9159

Pack Size 25 Ltrs

Product Ref. 0054

Condensate Controller

Condensate Controller

Aquamarine Condensate Controller is a liquid volatile amine product used as a neutralising agent in condensate and feed water systems and ship condensate lines.

How does it work?
Condensate Controller is an alkaline amine which acts as a neutralising agent which combats acid contamination in condensate and feed water systems. This is most commonly caused by the presence of dissolved carbon dioxide. Condensate Controller neutralises these products and maintains a protective film in the system. The product is recycled as a result of its volatility which causes it to carry over with the steam.

Dosing Instructions
Condensate Controller is best dosed using a metering pump or flow meter. The best dosing points are the condensate pump discharge, hot well or condensate return tank (feed line must be at least 1 metre below surface), or the deaerator storage tank.

• Dosing levels are set to maintain a pH between 8.3-9.0

Take a representative sample of condensate and test it for pH. If the pH is in the target range add a dose of 0.75 litres/day of Condensate Controller. If the pH is below this level increase the dose to 1.0 litre/day for 3 days and retest the pH. If the pH is above the target range decrease the dose to 0.5 litres/day for 3 days and retest the pH. It is important that regular testing is carried out to ensure levels of treatment are correct.
Condensate Samples should always be taken from the drains cooler or condenser.

Pack Size 25 Litres
NSN J150 9140-99-581-5784 Product Ref. 0022

Aquamarine Chemicals

Aquamarine Chemicals is a part of the Bayer-Wood Technologies Limited Group of companies, formed in 1992

A UK company operating globally offering ship chemical products, test kits & chemical engineering support

We are ISO 9001 Certified & ISO 14000 accredited.


iso 9001 2014 15