The pre-impregnation method: the barrier gesture that changes everything in hospital cleaning
In a hospital, nursing home, or daycare center, and generally in any healthcare setting, a misused mop head can do far more than just dirty a floor; it can also carry bacteria or viruses from one room to another or from one area to another. This is commonly known as cross-contamination , and the scourge of hospitals is nosocomial infections. You enter the hospital with one illness and end up leaving with another infection.
This is precisely the type of risk that the pre-impregnation method was designed to eliminate . More and more healthcare facilities are adopting it as a standard for bio-cleaning, just like handwashing or wearing gloves. Here's how it works, why it's essential, and how to choose the right trolley for your facility. The idea is to compartmentalize the areas as much as possible. Discover our complete range of hospital trolleys dedicated to the pre-impregnation method .
What is the pre-impregnation method?
The pre-impregnation method involves pre-soaking microfiber mop heads or disposable cleaning cloths with a precisely measured detergent-disinfectant solution before cleaning begins. The volume of solution is calculated so that each mop head or cloth can treat approximately 30 square meters.
Unlike the traditional method of using a bucket and a mop that is soaked as needed, each fringe is ready to use, dosed only once, and used on a single area before being changed.
The key principle is compartmentalization: one mop head per room, area, or zone. Once the surface is cleaned, the mop head is removed and replaced with a clean one for the next area; it never returns to a shared solution. This simple rule prevents the transfer of microorganisms from one patient to another, just as color-coded wipes or food brushes coded by zone already do in institutional catering.
Why this method is essential in healthcare settings
Hospital hygiene is not optional: it is essential for the safety of patients, residents, and staff. The pre-impregnation method addresses three problems commonly encountered with standard professional floor and surface cleaning systems. These points are crucial to address for enhanced hygiene.
• Preventing nosocomial infections. As mentioned in the introduction, by avoiding the use of the same head of cloth in multiple rooms or areas, we drastically limit the cross-contamination of viruses and bacteria, a recognized factor in healthcare facilities. This fight relies on hygiene for patients and caregivers, and therefore also on cleaning and disinfection protocols.
• Ensure correct dosage. The solution is prepared in advance, in a controlled quantity, which guarantees a constant concentration of the disinfectant throughout the entire route, unlike a bucket which dilutes and becomes contaminated over time. Disinfection standards are linked to precise dosages and contact times that do not allow for approximations, as can be the case with simple floor cleaning.
• Trace and audit the protocol. An organization by trolley, by zone and by frequency of fringe change facilitates quality control, a point often checked during hygiene audits in nursing homes and hospitals.
How does a pre-impregnation trolley operate on a daily basis?
The trolley is the complete work platform for the bio-cleaning agent. It generally includes several distinct zones: one or more tanks for preparing the impregnated mop heads, a storage area for clean mop heads and consumables (gloves, bags, products), a press or wringing system to remove excess solution, and a separate compartment for waste often equipped with DASRI bags for infectious waste.
In practice, the cleaner prepares their mop heads for the route (one per room or zone), places them in the designated compartment, and then moves from room to room, systematically changing the mop head each time. Models like the Voussert TOP 105 pre-impregnated cleaning trolley, or the Numatic SCG ReFlo and Vileda ranges, organize this route into clearly separated zones (waste, soiled mop heads, clean mop heads) to streamline the work and reduce handling. The mop heads are collected in a 22-liter bucket which has an integrated collection net to ensure maximum safety during collection.
Which type of support should I choose: Velcro, pockets, or a single-use headband?
The choice of fringe or disposable headband system directly impacts the logistics of your protocol. Three types of supports coexist, each with different trade-offs between cost, durability, and hygiene level:
| Support | Lifetime | Average absorption | Ideal for |
| Microfiber fringe with Velcro closure (40 cm) | 200 to 250 washes | 100 g | Common use, good cost/hygiene compromise |
| Microfiber fringe with pockets (40 cm) | 500 to 600 washes | 200 g | Heavy-duty use, better cost per use |
| Single-use/short washband | 1 to less than 50 washes | Variable | Areas with strict protocols (operating room, intensive care) |
With Velcro, the mop head gradually detaches from the backing as the Velcro wears, thus determining its lifespan. The pocketed mop head slips onto the microfiber mop head and lasts much longer in the washing machine, reducing the cost per cycle over time. Finally, the single-use mop head allows for disposal after a single use: this is the preferred option when disinfection protocols prohibit reuse, for example, after leaving an isolation room. Some mop heads can be washed, but with a fairly short lifespan, similar to Chicopee-type cleaning cloths.
This type of headband is particularly used in emergency centers with fire department and SAMU intervention vehicles, for example, due to its practicality and quick deployment.
Which trolley should you choose for your establishment?
The cart must adapt to your method and your terrain, not the other way around. Four things to check:
• Dimensions and autonomy. The number of rooms or the area to be cleaned per route determines the necessary storage capacity. An often overlooked point: check that the trolley fits in the elevator and service doors.
• Material. Plastic, Rilsan, or stainless steel: these three materials are highly resistant to harsh disinfectants and easy to clean, an essential requirement since the trolley itself must be disinfected regularly. With recycled plastics , trolley prices have dropped significantly, while Rilsan remains expensive, and stainless steel, provided it is of good quality, even more so. Today, polypropylene holds the largest market share.
• Ergonomics. Handles, swivel wheels and bin height must limit fatigue and musculoskeletal disorders on sometimes long routes.
• Adaptability and scalability. Our trolleys are designed to evolve and adapt to your cleaning requirements. Removable trays, adjustable compartments: our trolley can be reconfigured according to the department (operating room, radiology, standard rooms) without changing equipment. Depending on the needs, we also offer trolleys for general cleaning of corridors and rooms, specialized trolleys for operating rooms and intensive care units (compartments dedicated to products classified as medical devices), and trolleys designed for waste collection equipped for infectious medical waste bags.
Our selection of pre-impregnation trolleys
Voussert offers a complete range of hospital cleaning trolleys, in plastic, Rilsan, or stainless steel, designed for the pre-impregnation method. We highlight our Voussert brand models, specifically designed for this method and offering the best value for money on the market:
• TOP 106 pre-impregnation cleaning trolley (ref. 600106) from €219 excluding VAT, the entry-level Voussert most accessible option to start the method.
• TOP 105 pre-impregnation cleaning trolley (ref. 600105) from €239 excluding VAT, the reference model Voussert for the health, nursing home and daycare sectors.
• Trolley pack for pre-impregnation method (fringe) (ref. PAK105FR) from €289 excl. VAT, a complete Voussert starter pack including the trolley and fringes.
• Pre-impregnation method trolley pack (band) (ref. PAK105BD) from €259 excl. VAT, the pack version with single/short use washing bands.
• Numatic MM8 pre-impregnation trolley (ref. 915651) from €160 excluding VAT, an entry-level alternative for intensive use.
Find the entire range, including compact washing trolleys, large capacity rilsan models and accessories (pre-impregnation grids, presses, DASRI bags), on the dedicated category page.
In summary
The pre-impregnation method is not an additional burden; it's a standard that simplifies the work of teams while significantly reducing the risk of cross-contamination. Choosing the right trolley—material, dimensions, adaptability, and mop head support (Velcro, pockets, or single-use)—allows you to develop a reliable, cost-effective protocol that meets the hygiene requirements of healthcare facilities. To equip or renew your fleet, explore our range of hospital cleaning and pre-impregnation trolleys, or contact our team at +33 4 94 12 03 88 for advice on the configuration best suited to your facility.
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