Housekeeping chemicals used in hotels: the R1 to R9 system, safety and supplies

Housekeeping chemicals used in hotels look confusing at first: a row of coloured bottles marked R1, R2, R3 and so on, a few drums of concentrate and a dispenser on the wall. Used properly, they clean faster, protect your fittings and keep staff safe. Used badly, they etch marble, fade fabrics, burn skin and quietly double your monthly bill. This guide explains what the R-series numbers usually mean, how dilution and safety work, the supplies list a room attendant needs, and a simple way to control the cost.

Why hotels use a numbered chemical system

Before numbered systems, every hotel had its own mix of supermarket products, and staff learnt by trial and error which one went where. A numbered, colour-coded range solves three problems at once:

• Training. A new room attendant learns "R1 for the toilet, R3 for the mirror" in a day, whatever language they read best.
• Safety. Each product is matched to one surface and one task, so acids do not end up on marble or bleach on carpets.
• Cost. Concentrates are diluted on site, and each product is measured, so you pay for cleaning power, not for water in bottles.

The R-series is most familiar from one large professional cleaning brand's room care range, and many other suppliers in India now use similar codes. The numbers are a supplier's convention, not a standard. The same code can mean a slightly different product from another supplier or in another country, so the label in your hand always wins over any chart, including the one below.

The R1 to R9 series, explained

This table shows how the codes are commonly described. Check every product's label and safety data sheet before use.

Two practical rules follow from this table:

1. Daily cleaning uses the mild products. R1, R2 and R3 do most of the work in an occupied room. The strong acidic products (R6, R9) are for periodic descaling, used with gloves, not sprayed every day.
2. Stone and acid do not mix. Many Indian bathrooms have marble or granite counters and floors. Acidic cleaners etch and dull them permanently. Use a neutral cleaner on natural stone and keep the acids for ceramic tiles and toilet bowls.

Pair the codes with colour-coded cloths (for example red for toilets, yellow for other bathroom surfaces, blue for the bedroom) so one cloth never carries one area's dirt to another. Our room cleaning checklist shows the order in which each product is used in a room.

Dilution: where the money is saved or wasted

Most professional products arrive as concentrates. The supplier prints the dilution on the label, often as millilitres of concentrate per litre or per spray bottle of water, sometimes with different strengths for light and heavy soiling. Those numbers are not suggestions. Too weak and the surface is not clean; too strong and you damage surfaces, leave sticky residue, risk staff health and waste money.

How to keep dilution under control:

• Use a dispenser where you can. Wall-mounted dispensers fill bottles at the right strength at the press of a button. Suppliers often install them when you buy their range; ask.
• Otherwise, use a marked measure. Keep one measuring cup per product, labelled, and a pictorial chart above the mixing point.
• Fill bottles only in one place. The chemical store, never the guest room or the kitchen.
• Label every bottle. The product name, code, dilution and date, on a label that survives water.
• Water first, then chemical. It reduces splashes and foaming.

Illustrative example. Suppose a 5-litre can of concentrate costs ₹1,500 and the label says 10 ml makes a 500 ml spray bottle. One can then makes 500 bottles, at ₹3 a bottle. If staff "add a bit extra for good measure" and use 30 ml, the same can makes about 166 bottles, and each now costs ₹9. Over a year, that small habit can triple the bill for that product, and the rooms are no cleaner.

Safety: SDS, protective equipment and storage

Every chemical you buy should come with a safety data sheet (SDS), often still called an MSDS (material safety data sheet). It is the supplier's document for that product, listing the hazards, the protective equipment to wear, first aid, safe storage, and how to deal with a spill. Ask for one for every product before you buy, keep a printed file in the chemical store, and walk new staff through the ones for the products they will use.

The basics every property should follow:

• Never mix chemicals. Some combinations, for example an acidic toilet cleaner with a bleach-based product, can release toxic gas. Use one product, rinse, then the next.
• Protective equipment. Gloves for every chemical; goggles and an apron when handling concentrates or acidic descalers. Provide the right sizes and replace worn gloves.
• Ventilation. Open the window or run the exhaust fan when using strong products in a small bathroom.
• Storage. A locked, ventilated room, off the floor, away from food, linen and guest areas, with acids and alkalis on separate shelves. Keep products in their original containers.
• First aid. Running water and an eyewash point near the store, and the supplier's emergency number on the wall.
• Spills. Know from the SDS what to do, and keep absorbent material in the store.

If a guest, a child or a member of staff is exposed to a chemical, follow the SDS first aid and get medical help. Keep the product label with you so the doctor knows what it was.

Laundry chemicals follow the same rules. See our guide to laundry in hotel operations for the wash side of housekeeping.

The housekeeping supplies list

Chemicals are only part of what a room attendant needs. A well-stocked trolley saves trips back to the store, which is where much of a shift quietly goes. A typical list:

Chemicals and cleaning tools

• spray bottles of the daily products (for example R1, R2, R3), filled and labelled;
• colour-coded microfibre cloths, with spares;
• toilet brush and holder, a scrub pad and a small grout brush;
• a duster with an extendable handle for high areas;
• mop and bucket, or a flat mop system, and a broom or vacuum;
• gloves, and a bag for used cloths.

Linen and amenities

• clean bedsheets, pillowcases and towels for the rooms on the list;
• soap, shampoo, body wash or refill bottles, dental and shaving kits as your standard sets;
• toilet rolls, tissues and bin liners;
• tea, coffee, sugar, creamer sachets and drinking water;
• stationery, laundry lists and do-not-disturb cards.

Other

• a lost property bag and slips;
• a pen and the day's room list (or the work app);
• a small first aid kit on each floor.

Stock the trolley to a fixed list and a fixed quantity at the end of each shift. A trolley that is restocked the same way every day makes shortages visible straight away.

Cost control: measure per occupied room night

Housekeeping supplies rarely look large on a single invoice, but together they are one of the biggest variable costs after linen and staff. The way to control them is to measure them per occupied room night (each night a room is sold), so the number stays comparable whether you are full or quiet.

Illustrative example for a 20-room hotel at 70 per cent occupancy, about 420 occupied room nights a month:

Once you have the number, watch it every month. If it jumps while occupancy is flat, something has changed: a new product, a dosing problem, theft, or a supplier price rise. Practical ways to keep it steady:

• Buy concentrates and control dilution, as above.
• Issue supplies against a list, from a locked store, to a named person, and record it.
• Set par stock in the store (for example two weeks of use) and reorder when it falls below.
• Switch to refillable dispensers for shampoo and body wash where your guests accept them; it cuts the cost of miniatures and the waste.
• Compare cost per use, not price per can. A cheaper product that needs double the dose costs more.
• Ask your supplier for training. Many include it with a contract, and well-trained staff use less.

Getting started

If you are setting up a new property, or replacing a cupboard full of mixed products, keep it simple: one supplier, five or six products that cover your surfaces, dispensers or measures for each, the safety data sheets on file, and a one-page chart in the language your team reads.

When you compare suppliers, ask each for the same things: the product list mapped to your surfaces (especially any natural stone), the label dilution for each product, the safety data sheets, the cost per litre of diluted solution rather than per can, whether dispensers and staff training are included, and how quickly they deliver when you run short. Ask for a trial on two or three rooms for a fortnight and let your room attendants judge. They will tell you quickly which glass cleaner streaks and which toilet cleaner needs two passes. Then record your cost per occupied room night before and after the switch, so you know the change paid off.

Our guides to starting a homestay and running a hostel in India cover the rest of the set-up list.

GuestHawk keeps expenses, inventory and purchases beside revenue, with purchases and petty cash approved on the phone, so a jump in supplies spend shows up the same week.

Frequently asked questions

Sources

1. Diversey: Room Care Pur-Eco housekeeping chemicals brochure (R1, R2, R3, R9)
2. SetupMyHotel: types of room cleaning chemicals, Taski R1 to R9

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