Why Choose an Acidic Degreaser & Limescale Remover Like Phos?
Phos is a concentrated acidic descaler and degreaser formulated to rapidly break down limescale, rust, oxidation, and mineral deposits from metal and hard surfaces. Powered by phosphoric acid, Phos offers a safer, more surface-compatible solution than harsher hydrochloric-based products, especially when working with stainless steel, ceramics, or industrial metals.
This acidic degreaser & limescale remover is trusted in commercial kitchens, food production, HVAC systems, water lines, heat exchangers, boiler rooms, and plant maintenance operations. It restores efficiency by removing blockages and deposits - saving on maintenance costs and reducing downtime.
Safe, High-Performance Descaling for Industrial & Food-Safe Environments
Phos is ideal for use in:
• Commercial kitchens & food production facilities (non-contact surfaces)
• Boilers, tanks, cooling systems, and heat exchangers
• Pipework, HVAC coils, and water treatment systems
• Manufacturing plants and engineering workshops
• Washrooms, urinals, and shower units with hard water build-up
It’s biodegradable, non-corrosive when diluted, and safe for use on stainless steel, copper, aluminium, and ceramics. Phos is also suitable for environments that require compliance with food safety and hygiene standards - when used as directed and rinsed properly.
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 Dilute 1:50 with water for general cleaning or light-scale removal.
2️⃣ For heavy-duty descaling, increase concentration up to 1:10.
3️⃣ Soak equipment in the solution or spray directly onto affected areas such as HVAC coils, stainless steel surfaces, or pipework.
4️⃣ Allow 1–2 minutes dwell time for the solution to break down scale, rust, or oxidation.
5️⃣ Agitate if necessary using a brush or cloth.
6️⃣ Rinse thoroughly with plenty of clean water to remove all residue.
What is the best limescale cleaner for stainless steel?
Phos is ideal for stainless steel surfaces. Its phosphoric acid base removes limescale without corroding or dulling the metal.
How to remove limescale from commercial equipment?
Dilute Phos based on soiling level, apply to the affected area or system, allow dwell time, agitate if needed, 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.
Impressive limescale cleaner.
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As discussed with the customer service team at APT, our boarding school is located in a hard water area so we struggle with lots of hardened limescale build-up around the shower cubicles. They recommend we try Phos Clean and sent us a sample. We have consistently reordered this product every month. It really does what it says on the tin! Thanks to the APT team for another great suggestion.
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Brilliant limescale cleaner!
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Been looking for an acid descale for some time and glad to have found this product.
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Strong smelling product but it does the job really well! Quick delivery from APT
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Have been using APT’s products for years and just come across this limescale remover. Our restaurant is based in a hard water area and we suffer with limescale build-up in the loos and kitchen areas. Not very appealing for guests to see! Phos clean works really well to remove hardened limescale build-up. Fast delivery and excellent customer service as always!
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Really impressed with this limescale cleaner from APT. Cath always takes the time to understand our concerns and matches us with great products that work time and time again.
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Brilliant limescale cleaner. Would repurchase as you can always rely on APT’s products!
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We suffer with limescale build-up in our changing rooms. Thanks to Ria’s recommendation, this product has been a lifesaver. It removes all hardened limescale from the shower cubicles, toilets, surface areas and we even use in around the pool!
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I am a cleaner have have recently begun cleaning houses in a hard water area, I was finding limescale to be the bane of my life! I’ve tried loads of different products and nothing works like Phos Clean. This limescale cleaner works on the toilet bowls, showers, sinks and baths. It worked really quickly. I never want to be without this stuff again!
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5* limescale remover & limescale cleaner. I use this time and time again. A little gores a long way.
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We have tried many products to remove encrusted limescale from the bottom of our school toilet bowls, nothing has worked. The products I’ve tried either chip the limescale or don’t remove it at all. We have had this problem at the school for years. I was sceptical of this product, but I decided to try it anyway. I poured Phos Clean into the toilet bowl as per the directions. When I flushed the water, I was amazed to see that all of the hard-to-remove limescale had dissolved away. This product is absolutely fantastic. It’s the only product we have found that can remove encrusted limescale from our toilet bowl.
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Can’t believe how long this product has lasted me!
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Highly Recommend this product!
Works significantly well for my catering company and helps remain its cleanliness.
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Such great value for money! It does exactly as stated, with little application it lasts ages and makes cleaning much more efficient.
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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.