Read up wise.
The reference work for the cleaning trade: DS/INSTA 800, pH and surfaces, dosing, microfibre, colour coding, disinfection and working environment — plus templates and checklists for everyday use.
Articles
Become a cleaning technicianBackground · 8 minProfessional commercial cleaning is much more than dusting: quality is measured against a standard (DS/INSTA 800), chemicals are dosed precisely, and cross-contamination is prevented systematically. Here's why the trade is worth considering — and how to get started via AMU.DS/INSTA 800 explained simplyBackground · 13 minDS/INSTA 800 is the central standard for cleaning quality in the Nordic region. It measures how clean AFTER cleaning — not how often cleaning is done. Here are the principles, the five quality levels, object groups and dirt types, a step-by-step control procedure and the division of roles between client, supplier and independent inspector.The pH scale in cleaningBackground · 11 minpH determines what a cleaning agent can do: acidic products dissolve lime, alkaline dissolve grease, neutral are for daily cleaning. Here is the classification, the chemistry behind it (surfactants, softening), pH's effect on specific surfaces, product types linked to pH — and how to dose correctly.Safety data sheet (SDS) and the 9 CLP hazard pictogramsBackground · 10 minCleaning chemicals are regulated by the CLP Regulation. The safety data sheet has 16 fixed sections, and the label carries a signal word, H- and P-statements, plus one or more of the 9 hazard pictograms. Here is what they mean.Microfibre: dry, damp and wet methodBackground · 10 minMicrofibre cleans through mechanical scraping, static electricity, and capillary action — often with water alone, no chemicals. The three moisture states (dry, damp, wet) determine what the cloth can do; but it is the system around the cloth — pre-wetting, one cloth per surface, clean-to-dirty direction, and correct washing — that prevents moving dirt and bacteria around.Colour coding of cloths and mopsBackground · 8 minColour-coded equipment prevents bacteria from being transferred from, for example, toilet to kitchen. A common Danish model is red/yellow/blue/green — but sources vary, so let the workplace define its own overview. Here is the hygiene logic behind it, the link to HACCP and NIR, and a checklist for implementing the system.Surface disinfectionBackground · 10 minDisinfection requires the right concentration AND contact time. Alcohol 70–85 %, chlorine 0.1 % (1000 ppm) at pH > 8–9, quaternary ammonium compounds 0.5–5 %. But disinfection is not a routine: it is only used where indicated, the agent must match the microorganism, and its effect must be documented according to EN standards.Working environment in cleaningBackground · 12 minCleaning is physical and involves chemistry and wet work. Here are the real occupational safety requirements: when something is 'wet work', how to prevent musculoskeletal disorders and one-sided repetitive work, what applies for solitary and evening work, and what the AVP should contain for a cleaning team.How to measure up a room for a cleaning planMeasurement · 12 minA cleaning plan starts with a survey: area in m², zones, and frequencies. Here is the methodology — how you survey cleaning surfaces, select frequency according to INSTA 800 level, account for programming factors, and move from plan to tour plan and quotation. With a performance rate (m²/hour) you can calculate time and team size — but performance rate is always an estimate.Floor types and cleaningMeasurement · 12 minChoice of agent depends on floor type: material considerations (natural stone is acid-sensitive), a floor type→consideration overview and stain removal by stain type. The actual floor treatment (polish, boning, machines) has its own article.Cleaning plan templateTemplate · 4 minA cleaning plan describes which tasks are carried out where, how often and by whom. Here is a column template you can copy and fill in — with no binding figures, so it fits your premises.Checklist per room typeChecklist · 4 minA short checklist per room type so no object groups are forgotten. The lists are bullet points you can copy — frequency and method are adapted to your plan.INSTA 800 quality-control formChecklist · 4 minA form for visual inspection per DS/INSTA 800: record types of soiling per object group and count occurrences. The actual accept/reject limits are read off in your own licence.Chemical/SDS register templateTemplate · 4 minA register of the workplace's cleaning chemicals — so that dosage, pH, hazard symbols and protective equipment are gathered in one place. The fields are filled in from each product's label and safety data sheet.Sinner's circleBackground · 9 minSinner's circle describes the four factors that together determine the cleaning result: chemistry, mechanics, temperature and time. If you increase one factor, you can reduce another. Here is how the factors interact, concrete examples per task type, the limits you cannot go below — and the connection to cost and the Ecolabel's chemical reduction.The Swan Label cleaning service — tightened requirements from 2024/2026Background · 8 minCriteria version 4 for Nordic Swan Ecolabelled cleaning services came into force on 18 November 2024 and today applies as version 4.2. Chemical consumption is cut to max. 300 µl/m², the share of ecolabelled agents is raised to 90 %, and all new vehicles must be electric/hybrid or bio-/natural gas. Here is what it means in practice.The chemical rules from 1 January 2026Background · 6 minFrom 1 January 2026 the employer no longer has to seek prior approval or notify the Danish Working Environment Authority of work with certain carcinogenic substances, and titanium dioxide has been removed from the list of carcinogenic substances. The workplace instruction sheet, on the other hand, was abolished back on 1 July 2019. Here is what has actually changed — and what has not.The history of the cleaning profession – from manual labour to professional standardThe craft's history · 7 minProfessional cleaning has moved from experience-based manual labor to a documented trade with common standards, regulated chemistry and strict environmental requirements. We follow the traces that can be documented: the common Nordic quality standard DS/INSTA 800 from 2000, CLP labeling of cleaning chemicals, the AMU education path and today's stricter environmental requirements.Hospital and healthcare sector cleaningBackground · 12 minIn a hospital, cleaning is not aesthetics, but infection prevention. Here are transmission routes, the difference between standard and additional precautions, patient-proximate cleaning and touch points, isolation cleaning, the five moments of hand hygiene and why Danish hospital cleaning is controlled against BOTH DS/INSTA 800 and DS 2451-10.Food hygiene, HACCP and self-controlBackground · 12 minCleaning in kitchens, canteens and food businesses is regulated by law. Here are the hygiene zones, HACCP's seven principles and where cleaning fits as a prerequisite programme, two-step cleaning and disinfection of food contact surfaces, allergens and documented self-inspection.Floor treatment: polishing, scrubbing and burnishingBackground · 11 minFloor treatment is a separate discipline: removal of old coating, application of polish in thin layers, drying time, buffing to shine and ongoing maintenance. Here are the steps in order, machine choice (scrubbing/rotary and high-speed machine), the principle of pad colours and the typical pitfalls.Cleaning equipment and machinesBackground · 13 minGood equipment is half the result. Here is the cleaning trolley assembly, the vacuum's filter classes (dust class L/M/H and HEPA), floor washing machine, single disc/orbital machine and steam cleaning — with choice according to task and daily maintenance.Window polishing — technique and safety at heightBackground · 10 minWindow cleaning is a sub-discipline with its own technique and real occupational health considerations. Here is the classic wet method with squeegee and rubber blade, pole/deionised water method with modified (demineralised) water, why it gives streak-free windows — and the rules for safe work at height.Service assistant's patient-related and service functionsBackground · 11 minThe vocational education for service assistant (hospital services) covers far more than cleaning: patient and specimen transport, bed-making and bed-washing, sterilisation centre tasks, patient transfer and food and beverage tasks. Here is the entire service branch of the trade — and the occupational health and hygiene considerations that go with it.Carpet and textile cleaningBackground · 11 minCarpets and upholstered furniture are their own sub-discipline: the fibre type determines what they can withstand, and the four main methods — dry cleaning, shampoo/rotary cleaning, extraction and encapsulation — each have their drying time and risk profile. Here are the fibres, the methods, spot removal on textiles, the risk of over-wetting (browning and wicking) and upholstered furniture.Building cleaning and final building cleaningBackground · 11 minCleaning on a construction site is its own trade: rough cleaning, builder's cleaning and final cleaning before handover to the building owner. Here are the three steps, the typical deposits (mortar haze, paint splashes, grout residues), the particular occupational health considerations regarding quartz and stone dust, and the preparation for the owner's walkthrough.Waste management and source separationBackground · 10 minCleaning staff are the daily operational level in waste management. Here are the national waste fractions and source separation at the workplace, handling of hazardous waste (chemical packaging according to SDS section 13) and clinical risk waste in the health sector — with the occupational health and safety considerations that come with it.Customer contact, service and behaviour with customerBackground · 10 minCommercial cleaning takes place at the customer's premises, often alone and outside opening hours, with access to keys, alarms and confidential information. The service, behavior and communication dimension is its own competence: visible vs. invisible cleaning, confidentiality and GDPR, key and alarm responsibility, professional appearance and handling complaints.Clean enough? Hygiene profiles in schools, day care and nursing homesBackground · 9 minMost cleaning technicians work in schools, day care centres and nursing homes — and the same national hygiene rules apply here as in hospitals. Learn the three types of soiling, the five contact points, which hygiene profile the room has, and how to check by counting with NIR's table 7.Spray and asthma — how to apply the productBackground · 5 minCleaning assistants have a 2-3 times higher risk of getting asthma than the rest of the population. Spray is one of the reasons: the droplets float in the air, and you breathe them in. Here are NFA's five tips, what NIR Rengøring says, and how to read the label.Young people under 18 in cleaning — the rules from 1 January 2026Background · 6 minMany 13-17-year-olds have a part-time job cleaning. From 1 January 2026, the list of machines young people may not use is gone. Instead the employer must carry out a risk assessment with 7 points — and as a rule young people may not use chemicals with certain hazard statements.Cleaning robots and automatic floor washingBackground · 5 minRobot vacuum cleaners and automatic floor scrubbers have entered the programme: from 1 August 2026 the cleaning technician must know about robot technology. Here is what NIR Rengøring says about robots, what you must do yourself, and where the machines make sense.Where does a cleaning technician work? The buildings in figuresBackground · 4 minSchools, day care centres, nursing homes, hospitals and large office buildings: here the cleaning technician's workplaces are shown with figures from the Building and Housing Register (BBR). See how many there are, where they are, and what the figures do not tell you.