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Mop
 A mop (such as a floor mop) is a mass or bundle of coarse strings or yarn, etc., or a piece of cloth, sponge or other absorbent material, attached to a pole or stick. It is used to soak up liquid, for cleaning floors and other surfaces, to mop up dust, or for other cleaning purposes.[1] HistoryThe word (then spelled mappe) is attested in English in 1496, but new refinements and variations of mop designs have been introduced, from time to time. For example, American inventor Jacob Howe received US patent #241 for a mop holder in 1837[2] and Thomas W. Stewart (US patent #499,402) in 1893.[3] In her book Maggie's Memories, Margaret Wadkin (late of Hickling, near Melton Mowbray in England) describes the use of a mop nail for constructing homemade mops from old pieces of cloth during her village childhood in the early 20th century;
Types.jpg)  Many different proprietary designs are available, but the classic string mop design is also still widely used.[5][6] Dry mop, dust mopA dry mop or dust mop is designed to pick up dry, loose contamination such as dust, earth, and sand from the surface of the floor. It consists of yarn and/or microfiber and can be used as a first step in cleaning a floor. Professional dry mops consist of a flat sheet of microfiber textile or sheets with a surface of looped yarn, usually about 15 cm (6 in) wide, and comes in variable lengths (usually 30–100 cm (12–39 in)). The dry mop can in many instances replace a broom and has the ability to hold a limited amount of dust, sand, and debris within itself. The heads of dry mops are often removable and can be washed and replaced when saturated with dust.[7] Another option is using a vacuum cleaner to suck surface dust away from the mop; however, this is much more limited in its effectiveness. Single-use dry mops are also available and widely sold. Wet-mop, moist-mopA wet mop or moist mop is, in professional cleaning, used as in the second step in the cleaning of a surface. The wet mop is swept over the surface to dissolve and absorb fat, mud, and dried-on liquid contaminations. Professional wet mops consist of a flat sheet of microfiber textile or a sheet with a surface of looped yarn (which might contain microfiber as well), usually about 15 cm (6 in) wide, and come in various lengths (usually 30–100 cm (12–39 in)).
Mops for pre-moistening Professional flat mops are made for pre-moistening. Mops are pre-impregnated with an ideal amount of water mixed with an appropriate amount of detergent. This means that the cleaner does not need to bring any additional water on the cleaning trolley. This ideal amount is often recommended by the manufacturer in terms of weight percentage of water per weight of the dry mop, for example "175% water per weight of the dry mop". Mops for pre-moistening are flat sheets of (often microfiber) textile, usually about 15 cm (6 in) wide, and come in variable lengths (usually 30–100 cm (12–39 in)). Mops for pre-moistening are fastened on a handle with a flat pad mount with the aid of Velcro or a pouch on the mop, in which the pad on the handle fits. Pre-moistening can be done with a special washing machine, or by hand by simply folding and packing the mops tight in a container and pouring the measured amount of water over them. The mops will then need about 5–10 minutes for the liquid to distribute evenly in their tissue before use. This offers some advantages:
Hot mopThe hot mop (or steam mop) follows a similar concept to a steam iron. After adding water, the water is heated to make it exude on top of a floor, which can then be cleaned without using a cleaning solvent. These can work best on surfaces where a regular mop would also be used, such as bare floors, hearths, and laminate. Microfiber mopMicrofiber mops are constructed of a blend of polyester and polyamide fibers which are "split" and formed into a single fiber. This blend consists of 70–90% polyester that serves as the scrubbing and cleaning fiber and 10–30% polyamide which performs as the holding and quick drying fiber. This blend is usually expressed as a ratio on the label of the mop, e.g. an 80% polyester and 20% polyamide blend would be labeled as "80/20". Sponge mop Sponge mop heads are constructed with a cellulosic, rubber, or plastic foam block, usually attached by crimping a metal clip on one side. Sometimes, the foam mop head may be covered by a cloth or mesh sheet, to improve its resistance to wear from heavy scrubbing. The sponge is then attached to a handle mechanism which can compress the mop head, by means of rollers or a pivoted flat perforated blade. For consumer-grade sponge mops, the mop mechanism may be made of either plastic or metal. For heavy-duty or professional use, the mechanism is usually made of a corrosion-resistant metal such as stainless steel, and the mop head is often rubber or premium plastic foam. For clean room environments, a stainless steel handle and mechanism are preferred, along with a mop head made of a foam which has been formulated to minimize shedding of small particles. For use in microbiological labs, mops are made of materials which can be sterilized by autoclave or by ethylene oxide treatment.[8] Cloth mopA cloth mop (also called a "Cuban mop") is a simple T-shaped wooden handle, around which is wrapped a sturdy cloth towel. Its advantages are low cost and easy replacement of the mop head, which can simply be washed by hand or tossed into a washing machine.[9] Handles and mountingA mop handle consists of a long piece of wood or metal tubing fitted with a specific attachment for the mop head. The handle can be attached the mop head by means of:
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