Abstract: The invention relates to a chromium-based coating comprising at least one layer rich in crystalline phase or phases of nickel (Ni) and/or Ni compounds, and at least one layer rich in crystal-line phase or phases of chromium (Cr) and/or Cr compounds, Cr being electroplated from a trivalent chromium bath. The coating is characterized in that the it further comprises one or more crystalline phases of chromium-nickel-phosphorus (CrNiP), which CrNiP phase has been produced by heat treating a coating comprising at least one layer of nickel-phosphorus (NiP) and at least one layer of Cr. The invention also relates to a method for producing a chromiumbased coating and to a coated object.

Abstract: To produce a chromium-containing multilayer coating on an object, alternate layers of nickel phosphorus alloy and trivalent chromium are deposited on the object until a desired thickness of coating has been reached. The coated object is then subjected to one or more heat treatments to improve the mechanical and physical properties of the coating and to produce multiphase layers comprising layers containing crystalline Ni and crystalline Ni3P and layers containing crystalline Cr.

Abstract: To produce a trivalent chromium based coating on an object, a layer of nickel phosphorus alloy is deposited on the object, an intermediate layer of another metal or metal alloy or ceramic is deposited on the NiP layer, and a chromium layer is deposited from a trivalent chromium bath on the intermediate layer. The coated object is subjected to one or more heat treatments to harden the coating and to produce multiphase layers including at least one layer containing crystalline Ni and crystalline Ni3P and at least one layer containing crystalline Cr. The intermediate layer can consist of copper, molybdenum, a metal alloy or a non-metallic solid, such as an oxide, nitride or carbide of a metal.

Abstract: A pipette comprising a cylinder with a piston movable inside the cylinder for aspiring and dispensing liquid, and a handle portion for gripping the pipette, wherein the pipette further comprises an imaging device element for obtaining images that assist the use of the pipette.

Abstract: A pipette comprising a cylinder with a piston movable inside the cylinder for aspiring and dispensing liquid, and a handle portion for gripping the pipette, wherein the pipette further comprises an imaging device element for obtaining images that assist the use of the pipette.

Abstract: A pipette comprising a cylinder with a piston movable inside the cylinder for aspiring and dispensing liquid, and a handle portion for gripping the pipette, wherein the pipette further comprises an imaging device element for obtaining images that assist the use of the pipette.

Abstract: The invention relates to a chromium-based coating comprising at least one layer rich in crystalline phase or phases of nickel (Ni) and/or Ni compounds, and at least one layer rich in crystal-line phase or phases of chromium (Cr) and/or Cr compounds, Cr being electroplated from a trivalent chromium bath. The coating is characterized in that the it further comprises one or more crystalline phases of chromium-nickel-phosphorus (CrNiP), which CrNiP phase has been produced by heat treating a coating comprising at least one layer of nickel-phosphorus (NiP) and at least one layer of Cr. The invention also relates to a method for producing a chromiumbased coating and to a coated object.

Abstract: A pipette comprising a cylinder with a piston movable inside the cylinder for aspiring and dispensing liquid, and a handle portion for gripping the pipette, wherein the pipette further comprises an imaging device element for obtaining images that assist the use of the pipette.

Abstract: To produce a chromium-containing multilayer coating on an object, alternate layers of nickel phosphorus alloy and trivalent chromium are deposited on the object until a desired thickness of coating has been reached. The coated object is then subjected to one or more heat treatments to improve the mechanical and physical properties of the coating and to produce multiphase layers comprising layers containing crystalline Ni and crystalline Ni3P and layers containing crystalline Cr.

Abstract: To produce a trivalent chromium based coating on an object, a layer of nickel phosphorus alloy is deposited on the object, an intermediate layer of another metal or metal alloy or ceramic is deposited on the NiP layer, and a chromium layer is deposited from a trivalent chromium bath on the intermediate layer. The coated object is subjected to one or more heat treatments to harden the coating and to produce multiphase layers including at least one layer containing crystalline Ni and crystalline Ni3P and at least one layer containing crystalline Cr. The intermediate layer can consist of copper, molybdenum, a metal alloy or a non-metallic solid, such as an oxide, nitride or carbide of a metal.

Abstract: A method for producing a trivalent chromium based coating on a metal substrate, a layer of nickel phosphorus alloy is deposited on a metal substrate and a trivalent chromium layer is electroplated on the Ni—P layer. The coated metal substrate is subjected to one or more heat treatments to harden the coating and to produce multiphase layers including at least one layer containing crystalline Ni and crystalline Ni3P, and at least one layer containing crystalline Cr and crystalline CrNi. By using this method it is possible to produce coatings having a Vickers microhardness value higher than 2000 HV.

Abstract: A pipette including a cylinder part having a cylinder and a tip part, which includes a tip channel connected to the cylinder and a movable piston tightly fit within the cylinder for aspirating liquid into and removing liquid from the tip container attached to the cylinder. In the pipette at least the tip part is made of an elastic material, such as rubber. The tip container can thus be easily and reliably fixed to and removed from the tip container.

Abstract: The invention relates to a pipette comprising a cylinder part (1) having a cylinder (2) and a tip part (3), which comprises a tip channel (4) connected to the cylinder and a movable piston (5) tightly fitted within the cylinder for aspirating liquid into a removing liquid from the tip container and attached to the cylinder. The pipette unit of the invention is characterised by at least the tip part (3) being made of an elastic material, such as rubber. The tip container can thus be easily and reliably fixed to and removed from the tip container.