Why Use an Ultrasonic Descaler & Limescale Remover?
Ultramax PHS is engineered to dissolve stubborn limescale, rust, and mineral deposits in ultrasonic cleaning systems without harming stainless steel. It boosts the cleaning power of your bath by removing the scale that blocks ultrasonic waves, resulting in faster, deeper cleans with less effort.
This concentrated descaler works fast to restore ultrasonic performance, reducing downtime in industrial, medical, and laboratory environments. Its low-foaming formula ensures safe, efficient use without disrupting ultrasonic action, and it's safe on steel and sensitive parts when used as directed.
Eco-Conscious, High-Efficiency Descaling
Ultramax PHS contains biodegradable surfactants and meets all REACH compliance regulations. It’s powerful enough for engineering shops, yet safe enough for medical and lab equipment, making it one of the most versatile ultrasonic descalers on the market.
Key Benefits of Ultramax PHS
• Dissolves heavy limescale, rust, and mineral deposits
• Low-foaming for optimal ultrasonic energy transfer
• Safe on stainless steel and soft metals
• Highly concentrated for long-lasting performance
• Biodegradable and REACH compliant
• Enhances cleaning efficiency and extends equipment lifespan
What Makes Ultramax PHS Better Than Standard Descalers?
Unlike generic acidic cleaners, Ultramax PHS is tailored for ultrasonic bath use. It’s low-foam, precision-safe, and won't degrade expensive equipment. Its industrial strength and cost-efficiency make it a top choice for high-frequency cleaning cycles in demanding environments.
Important
- Harmful if swallowed.
- Causes severe skin burns and eye damage.
- Harmful to aquatic life with long lasting effects.
- Do not breathe mist, spray.
- Avoid release to the environment.
- Wear protective gloves, eye protection, face protection.


1️⃣ Light Cleaning & Maintenance Descaling: Dilute Ultramax PHS at a ratio of 1:50 with water. This is ideal for regular maintenance and minor limescale removal in ultrasonic baths and equipment.
2️⃣ Heavy-Duty Descaling: For tougher scale, corrosion, or rust removal, increase the concentration up to 1:10. Always add the product to water, not vice versa.
3️⃣ Place parts or equipment into the prepared solution within the ultrasonic bath. Allow to soak for 1–2 minutes to loosen deposits. Agitate manually or activate the ultrasonic cycle to enhance cleaning performance.
4️⃣ After soaking, rinse all equipment thoroughly with clean water to remove loosened residues and neutralise the acidic solution.
5️⃣ For internal descaling (e.g. containers or tanks), apply neat Ultramax PHS directly to the affected area.
Top up with water and leave to soak. Agitate if necessary and rinse thoroughly.
How to descale commercial dishwasher?
It is essential to carry out regular cleaning and descaling of your commercial dishwasher to ensure that water carrying pipework, mixing equipment and storage units, and maintained to combat limescale build-up and bacterial growth. APT’s Phos Clean is a food safe descaler that is based on phosphoric acid and inhibitors that is a highly concentrated commercial equipment descaler specifically designed to remove rust and limescale build-up. Phos-Clean is a versatile and food safe limescale remover for all professional catering and industrial processing equipment. This highly concentrated formula rapidly removes limescale build-up and it is suitable for use on most plastics and metals including stainless steel.
How to descale a commercial espresso machine?
When it comes to descaling commercial coffee machines, it’s essential to use commercial cleaning products that have been specifically designed with that task in mind. Using the wrong product could not only damage your machinery but could be unsafe to use for the user. We recommend using APT’s Phos Clean to clean and descale your commercial espresso machines as it is designed specifically to clean plastics and metals, including stainless steel. This highly concentrated commercial blend of phosphoric acid and inhibitors contains a low foaming formula, rust inhibitors and wetting agents, whilst being non-tainting and safe for cleaning and descaling all water and steam boiler units and commercial kitchen machines.
How to descale hot water pipes?
We recommend using Phos Clean to clean and descale hot water pipes. Phos Clean is a highly concentrated commercial equipment descaler formulated to remove rust along with limescale build up in industrial processing equipment. Trusted nationwide, Phos Clean is used to services and maintain water carrying pipework, mixing equipment and storage units to combat bacteria growth and limescale build up. Suitable for use on all plastics and metals including stainless steel. This highly concentrated commercial blend contains rust inhibitors and wetting agents, with the need to dilute it on site, so you’re not paying us to ship water so your cleaning and maintenance budget goes further.
How much does pipe descaling cost?
When it comes to pipe descaling, it can be a hugely costly task that can be difficult to carry out, requiring a specialist pipe cleaning company to carry out the cleaning task. Rather than spending huge amounts of money on having your commercial pipes professionally descaled, use APT’s Phos Clean. Phos Clean is a versatile, food safe limescale remover for your professional catering and industrial processing equipment. Phos Clean rapidly removes limescale build up on processing equipment and pipework. This highly concentrated formula is suitable for use on most plastics and metals, containing rust inhibitors and wetting agents to remove scale build up, bacterial growth and unwanted build-up within your pipes.
How to remove thick limescale?
It’s essential to remove thick limescale to ensure that your machinery and equipment is running in a safe and effective manner. We have designed Phos Clean which is our highly concentrated acid descaler formula to effectively remove limescale build-up in catering in industrial processing equipment, including stainless steel. You can use Phos Clean to service, maintain, and treat water carrying pipework storage units to combat limescale, bacteria growth and other unwanted build-up ensuring cleanliness and a longer life for your expensive systems. Phos Clean is a low-foaming formula that is non-tainting that is safe for cleaning and descaling all equipment.
Ultramax PHS is my budget-friendly descaling wizard. As a small business owner, I need a solution that packs a punch without breaking the bank. This ultrasonic bath fluid, with its 5L bottle’s impressive dilution ratio, provides cost-effective limescale removal for my equipment, ensuring they operate at their best.
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This product is brilliant for descaling The versatility of being safe on glass and plastic components makes it a standout choice for various descaling tasks. APT has once again delivered a reliable and effective solution.
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As a laboratory technician, precision is crucial. This ultrasonic bath fluid, designed for use in medical facilities, ensures thorough limescale removal without compromising delicate instruments. The added benefit of being safe on most metals is a game-changer in my line of work.
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Used in the aerospace sector, it stands out as a reliable solution for heavy-duty descaling. The safe-to-use formula on most metals, including stainless steel, makes it an essential tool in my workshop for maintaining efficient operations.
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Ultramax PHS is a symphony of descaling perfection. As a music equipment manufacturer, I need a descaling fluid that won’t harm delicate components. This ultrasonic bath fluid, with its low-foam phosphoric acid base, provides thorough limescale removal while maintaining the integrity of glass and plastic parts. APT has truly composed a masterpiece.
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This is a heavy-duty descaling excellence in a bottle. Used in the munitions sector, this ultrasonic bath fluid goes beyond expectations. The low-foam phosphoric acid base ensures thorough limescale removal on most metals, making it an indispensable tool for heavy-duty descaling operations.
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Ultramax PHS is my go-to limescale eradicator. As a facility manager, I need a descaling fluid that’s not only effective but also cost-effective. This ultrasonic bath fluid, with its impressive dilution ratio, ticks all the boxes. It’s a reliable solution for keeping water-carrying components in top condition.
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APT’s Ultramax PHS is like wizardry for descaling tasks. Used in transport and servicing, it effortlessly removes limescale from water-carrying components. The low-foam phosphoric acid base ensures a thorough clean, and the 5L bottle’s dilution ratio makes it a budget-friendly choice for maintaining equipment.
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Ultramax PHS is a versatile powerhouse for descaling operations. Used in the remanufacturing sector, it tackles tough limescale removal on various metals. The safe-to-use formula on stainless steel, glass, and plastic components makes it a go-to for a wide range of descaling tasks.
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Ultramax PHS is my precision cleaning partner. In the medical sector, precision is non-negotiable. This ultrasonic bath fluid, with its low-foam phosphoric acid base, ensures thorough descaling without compromising delicate components. APT has truly crafted a solution that meets the demands of precision cleaning.
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Ultramax PHS is the savior for water-carrying components. As a plumber, I need a descaling fluid that can handle tough limescale removal. This ultrasonic bath fluid not only does that but also ensures a thorough cleaning. It’s a must-have in my toolkit for maintaining efficient water systems.
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Ultramax PHS is a descaling marvel made in the UK. Used in munitions and medical sectors, it stands out as a reliable solution for ultrasonic bath descaling. The 5L bottle’s dilution ratio is impressive, making it an economical powerhouse for tackling limescale and ensuring thorough cleaning.
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Ultramax PHS works like magic on glass and plastic components. Used in the transport sector, it’s my go-to for descaling and cleaning tasks. The low-foam phosphoric acid base ensures thorough limescale removal without compromising on safety. APT has truly crafted a gem for heavy-duty descaling.
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Ultramax PHS is stainless steel’s best friend. As a kitchen equipment manufacturer, I rely on this ultrasonic bath fluid for descaling and cleaning stainless steel components. It’s safe, effective, and the 5L bottle’s dilution ratio makes it a cost-effective solution for maintaining pristine surfaces.
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APT’s Ultramax PHS is a descaling dynamo! Used extensively in medical and remanufacturing sectors, this ultrasonic bath fluid is a game-changer. The low-foam phosphoric acid base ensures a thorough descaling operation, making it my top choice for heavy-duty cleaning tasks
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Brilliant product a little amount does the job and has saved me money.
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Very impressed with the speed at which this descaling fluid worked. – Highly Recommend!
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Best product on the market.
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Shipping & Returns Information - APT Commercial Chemicals
At APT, we understand that timely delivery is essential to your operations. Below you'll find everything you need to know about our shipping and returns processes.
Delivery & Shipping DetailsOrders are shipped using our trusted courier partners: DHL, DPD, and Owens Group. Shipping fees depend on the order value, total weight, and delivery location within the UK.
Please note: Not all orders qualify for free delivery. Hazchem items and bulk shipments may carry additional charges.
LOCATION
ORDER VALUE
DELIVERY COST
UK Mainland
(1-3 days)
£100.00+
Free*
UK Mainland
(1-3 days)
Under £100.00
£8.45
Scottish Highlands
(3-7 days)
Any
From £23.11
Northern Ireland
(3-7 days)
Any
From £21.83
*Free delivery excludes hazchem items and orders over 100kg. Shipping is automatically calculated at checkout.
Hazchem Delivery
Certain products are classified as hazardous and must be shipped through the Hazchem Network. These items always incur a delivery fee due to strict handling and transport regulations.
Delivery costs for Hazchem products are calculated based on weight and delivery address, and will be shown clearly at checkout.
Returns & RefundsWe want you to be completely satisfied with your purchase. If you need to return an item, please read the following:
· As per our Terms & Conditions, all returns should be received by us no later than 14 days after they were dispatched. The goods must be returned to us unopened, unused and in their original packaging.
· Once we receive and inspect your return, we'll notify you of the outcome.
· Approved returns are refunded to your original payment method, minus a 25% restocking charge.
· Refund processing times may vary depending on your bank or payment provider.
Please Note: A 25% restocking fee applies to all returned items unless agreed otherwise in writing prior to return.
Damaged or Incorrect Items
Please inspect your order upon arrival. If your item is damaged, defective, or incorrect, contact customerservices@apt-icc.co.uk immediately so we can resolve the issue promptly.
Non-Returnable Items
We cannot accept returns for:
· Hazardous goods or flammable liquids
· Sale items
· If you're unsure whether your item is eligible for return, contact our support team at customerservices@apt-icc.co.uk or call 0800 0723 773.
Exchanges
Need a different item? Please contact customerservices@apt-icc.co.uk to arrange an exchange subject to T&C’s.