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Hi there, I'm Jarvis! I see you're looking at the Commercial Dishwasher Rinse Aid | Rinse Additive | 20 Litre Container | OSMOS CU590. How can I help you with the technical specs or suitability for your business today?

Jarvis is an AI assistant and may occasionally provide incorrect details. To ensure your equipment fits and functions perfectly, we recommend verifying all critical specifications-including dimensions, power requirements, and compatibility-with our expert sales team prior to purchase.For orders or stock, call 0333 355 0535

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Osmos In Stock

Commercial Dishwasher Rinse Aid | Rinse Additive | 20 Litre Container | OSMOS CU590

SKU: CU590
£44.72 / exc vat
£53.66/ inc vat
  • Universal Compatibility
  • Large 20Ltr Size
  • Anti-Scaling Agent
  • Streak-Free Finish

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Price Match

UK Warehouse

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Features Overview Specifications Case Study Reviews Installation Buying Guide FAQ

Product Overview

Here’s a kitchen essential that works quietly in the background to make sure your front-of-house shines. The OSMOS CU590 is a top-notch commercial dishwasher rinse aid, formulated to give your glassware and  crockery that perfect, streak-free finish every single time. Forget spending precious minutes hand-polishing water spots away; this is your secret weapon for a flawless presentation straight from the dishwasher.

Designed for the hustle and  bustle of professional UK kitchens, from cosy cafés to sprawling hotel restaurants, this universal additive is compatible with any commercial dishwasher or glasswasher. Its powerful formula is specially designed for soft-to-medium water conditions, helping everything to dry rapidly and  emerge sparkling. The generous 20-litre container also means you’re well-stocked, reducing the hassle of frequent reordering.

Ultimately, this professional dishwasher rinse liquid is about more than just clean dishes—it's about efficiency, quality, and  upholding your standards with every plate and  glass you serve. It contains a clever anti-scaling agent to help protect your machine's internal parts from limescale build-up, saving you money on maintenance down the line. For a reliable, cost-effective solution that delivers gleaming results, look no further.

Key Features and  Benefits

  • Universal Compatibility: Works brilliantly with any commercial dishwasher or glasswasher model.
  • Large 20Ltr Size: Reduces the frequency of reordering and  equipment downtime.
  • Anti-Scaling Agent: Helps prevent limescale build-up, protecting your machine investment.
  • Streak-Free Finish: Leaves glassware and  crockery gleaming and  ready for service.
  • Rapid Drying Action: Speeds up turnaround times in a busy kitchen environment.
  • For Soft/Medium Water: Perfectly formulated for the water conditions in many UK areas.
  • Biodegradable Formula: A more environmentally considerate choice for your business operations.
  • Excellent Value: The bulk commercial dishwasher rinse aid 20 litre pack is highly cost-effective.

Technical Specifications

  • Brand: Osmos
  • SKU: CU590
  • Product Type: Commercial Dishwasher Rinse Aid
  • Volume: 20 Litres
  • Compatibility: Universal for all commercial dishwashers and  glasswashers
  • Water Suitability: Formulated for soft to medium water conditions
  • Special Feature: Contains anti-scaling agent
  • Environmental: Biodegradable to EU standards
  • Appearance: Blue Liquid

Expert Review and  Insights

In a commercial setting, a quality rinse aid is one of the most underrated products. The Osmos CU590 isn’t just a blue liquid; it’s an efficiency tool. It removes the final, frustrating step of hand-polishing, ensuring staff can focus on service, not water spots. Its performance in soft and  medium water is consistently impressive, delivering the clarity that venues pride themselves on.

Charlotte Rayner – Commercial Cleaning Expert View Profile →

  • Performance: Delivers consistently brilliant, streak-free results, especially on delicate glassware.
  • Handling: The 20L drum is heavy, so requires careful handling and  storage.

Case Study: Real Business, Real Results

The team at 'The Anchor & Crown', a popular canalside pub in Birmingham, were struggling with persistent water spots on their beer glasses, causing delays during their busy evening rushes. They switched to the OSMOS CU590 rinse additive to improve their glasswasher's performance.

"Honestly, the difference was immediate. Our glasses now come out looking polished and  perfectly clear, with no extra work needed from the bar staff. It's just one less thing to worry about when we're slammed."

Robert Finch – Pub Manager

The switch completely eliminated the need for hand-polishing, saving the team an estimated 2-3 hours of labour per week.

Installation and  Maintenance Guide

Setting It Up

  • Always wear appropriate PPE, like gloves and  eye protection, when handling and  changing containers.
  • Securely place the machine's chemical intake tube into the OSMOS CU590 container, ensuring it reaches the bottom.
  • Check that the cap is replaced securely on the old container before disposal and  on the new one to prevent spills.
  • If you have just installed a new tube, prime the dosing pump according to your machine's manual to ensure the liquid is flowing.

Keeping It Going

  • Store the container upright in a cool, dry, and  well-ventilated area, away from direct sunlight and  foodstuffs.
  • Regularly check the liquid level to avoid running out unexpectedly during a busy service.
  • Ensure the area around the chemical containers is kept clean and  tidy to prevent accidents.
  • Label your chemical lines clearly (e.g., 'Rinse Aid' and  'Detergent') to avoid any mix-ups when changing containers.

Buying Guide: Choosing the Right Warewashing Chemicals

Not sure what your kitchen needs to get the best sparkle? Here are a few pointers to help you choose the right warewashing chemicals for your setup.

Know Your Water

Water hardness varies across the UK. Using a chemical formulated for your area (e.g., soft/medium or hard water) makes a huge difference to the results and  your machine's health.

Detergent vs. Rinse Aid

They do two different jobs. Detergent provides the cleaning power to remove food and  grease. A rinse aid ensures a spot-free, rapid dry. You need both for professional results.

Correct Dosing is Crucial

Too little chemical gives poor results, and  too much is a waste of money and  can leave residue. An automatically dosed system, set up by an engineer, is the most reliable option.

Consider Eco-Credentials

Look for biodegradable formulas where possible. It's a small change that contributes to your business's environmental responsibility without compromising on cleaning power.

Bulk Buying Saves Money

Larger containers like this 20-litre option offer a lower cost-per-wash and  reduce the admin and  downtime associated with frequent reordering.

See all Dishwasher Detergent & Rinse Aid

Frequently Asked Questions

Q: Is this rinse aid suitable for my glasswasher as well as my dishwasher?

A: Yes, absolutely. The OSMOS CU590 is a universal formula designed to work perfectly in both commercial dishwashers and  glasswashers.

Q: What does the 'anti-scaling agent' actually do?

A: It helps to prevent the build-up of limescale (mineral deposits) inside the rinse section of your machine, which protects it and  keeps it running efficiently.

Q: Is this product formulated for hard water areas?

A: This specific formula is optimised for soft-to-medium water conditions. For very hard water areas, you'll get better results from a product specifically designed for hard water.

Q: Why is the liquid blue?

A: The colour is simply for easy identification. It helps staff quickly distinguish the rinse aid from the dishwasher detergent, which is often a different colour like yellow or white.

Q: Can I use this in my dishwasher at home?

A: This product is designed for professional machines with automatic dosing pumps that feed the liquid directly from the container. It is not suitable for domestic dishwashers.

Q: How does a rinse aid make dishes dry faster?

A: It works by reducing the surface tension of the water. This means instead of forming droplets that leave spots, the water runs off the surfaces in a thin sheet, allowing for rapid, spot-free drying.

Q: Is 'biodegradable' just a marketing term?

A: Not at all. It means the product's ingredients are certified to break down naturally into simpler substances, reducing their impact on the environment after disposal.

Q: How will I know when I'm about to run out?

A: The best practice is to physically check the level in the container as part of your weekly opening or closing checks to avoid running out mid-service.

What Customers Are Saying

"A fantastic product that does exactly what it says on the tin. Our glasses have never looked better and  the 20L size lasts for ages. Great value."

Sarah Williams – The Copper Pot Café, Manchester

"We switched to this rinse aid a few months ago. It performs really well and  we've noticed less scale build-up in the machine's rinse arms. Highly recommend."

Ben Carter – Operations, The Grand Hotel, York

"Simple, effective, and  reliable. This catering dishwasher rinse aid gets the job done with no fuss. Our plates and  cutlery are always spotless."

Maria Costa – Owner, La Trattoria, Glasgow

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The Osmos Standard: Consistency in Every Wash

Beyond the technical details, choosing Osmos chemicals is about bringing steadfast consistency to a critical part of your operation. In a busy kitchen, the last thing you need is unpredictable results. This commercial dishwasher rinse aid 20 litre drum is formulated to deliver the same flawless, gleaming finish wash after wash, day after day. This reliability translates directly into business value: it protects your investment in quality glassware, reduces staff time wasted on re-polishing, and  ensures every customer receives their drink or meal with tableware that reflects your high standards. By eliminating the variable of water spots and  cloudy glasses, you’re not just buying a chemical; you're investing in operational smoothness and  the consistent brand reputation that comes with it.

Explore more from Osmos

Why an Anti-Scaling Agent is Your Warewasher's Best Friend

Ever wondered what that chalky white residue inside a kettle is? That's limescale, and  it builds up inside your expensive dishwasher too, especially in its hidden pipes and  heating elements. Think of it like cholesterol for your machine's arteries; over time, it clogs the system, making it less efficient and  leading to costly breakdowns. The anti-scaling agent in the OSMOS CU590 rinse additive is a preventative measure. It works during every rinse cycle to stop these mineral deposits from sticking to internal components, keeping water flowing freely and  ensuring your machine runs efficiently for longer. It's a small feature that provides huge long-term protection for your investment.

Who Should Buy This?

  • Busy Restaurants & Bistros: To ensure a constant supply of sparkling clean tableware during peak service hours.
  • Pubs & Bars: For achieving that crystal-clear finish on glassware that enhances every single drink served.
  • Hotels & Event Venues: To effortlessly manage high-volume dishwashing for guest dining, banquets, and  room service.
  • School Canteens & Care Homes: For maintaining impeccable hygiene standards with a fast turnaround of crockery and  cutlery.
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Add the OSMOS CU590 Commercial Dishwasher Rinse Aid 20 Litre to your basket now for brilliantly consistent, spot-free results in every wash.

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