A retractable nozzle assembly is configured for dosing or dispensing highly viscous materials. The retractable nozzle assembly may be fitted to a delivery device containing a highly viscous chemical product to be dispensed. The retractable nozzle assembly may be actuated by hand, by mechanical action, or by any electromechanical device such as a dispenser. The retractable nozzle assembly includes a first path through a central bore in which the material moves at relatively slower flow rate and a secondary flow path in which the material moves at a relatively faster flow rate. The difference in flow rates at the outlet of the nozzle between the two flow paths helps to eliminate stringing and tailing of the high viscosity chemical product during dispensation.

A fluid delivery device comprises a housing having a fluid reservoir. A needle is in fluid communication with the fluid reservoir in an engaged position and out of fluid communication with the fluid reservoir in armed and storage positions. A proximal end of a biasing member is coupled to the housing and a distal end of the biasing member is configured to deliver a force to the fluid reservoir. A piston member extends through the biasing member and is coupled to the distal end of the biasing member. The piston member is fixed with respect to the housing in a locked position such that the biasing member does not deliver the force to the fluid reservoir and moveable with respect to the housing in a released position such that the biasing member delivers the force to the fluid reservoir. Transitioning the needle from the storage position to the armed position transitions the piston from the locked position to the released position.

The invention is related to a pipette calibration managing system (PCMS), comprising a PCMS managing application to be hosted by the PCMS customer and to be run by a PCMS host server, which is accessible for clients via a data network and is configured for man-aging the access of the clients to PCMS data contained in a PCMS database stored in a PCMS data storage being located on premises of the PCMS customer, a client application to be run by a client computer and configured to communicate with the PCMS managing application via the data network, a calibration ordering software configured for providing the calibration order data to be transferred to a calibration service provider, the PCMS managing application being configured to receive calibration data from the calibration service provider via an external data network, in particular the Internet, and the PCMS data-base being configured to store the calibration data, which thereby form at least a part of the PCMS data. The invention also relates to a corresponding method.

A fluid delivery device comprises a housing having a fluid reservoir. A needle is in fluid communication with the fluid reservoir in an engaged position and out of fluid communication with the fluid reservoir in armed and storage positions. A proximal end of a biasing member is coupled to the housing and a distal end of the biasing member is configured to deliver a force to the fluid reservoir. A piston member extends through the biasing member and is coupled to the distal end of the biasing member. The piston member is fixed with respect to the housing in a locked position such that the biasing member does not deliver the force to the fluid reservoir and moveable with respect to the housing in a released position such that the biasing member delivers the force to the fluid reservoir. Transitioning the needle from the storage position to the armed position transitions the piston from the locked position to the released position.

A retractable nozzle assembly is configured for dosing or dispensing highly viscous materials. The retractable nozzle assembly may be fitted to a delivery device containing a highly viscous chemical product to be dispensed. The retractable nozzle assembly may be actuated by hand, by mechanical action, or by any electromechanical device such as a dispenser. The retractable nozzle assembly includes a first path through a central bore in which the material moves at relatively slower flow rate and a secondary flow path in which the material moves at a relatively faster flow rate. The difference in flow rates at the outlet of the nozzle between the two flow paths helps to eliminate stringing and tailing of the high viscosity chemical product during dispensation.

A monitoring apparatus that monitors an operation of a fluid dispensing system. The fluid dispensing system includes at least one storage unit, a dispensing arrangement, and a pumping arrangement for providing a flow of the fluid from to the dispensing arrangement. The monitoring apparatus includes a sensing arrangement that is connected to the fluid dispensing system, wherein the sensing arrangement measures operational performance of the flow of the fluid dispensed through the dispensing arrangement and a server arrangement communicably coupled to the sensing arrangement via a data communication network. The server arrangement acquires the operational performance of the flow of the fluid dispensed, generates an actionable information for adjusting optimal dispensing of the fluid and provides the actionable information to a user device to report an operational status of the fluid dispensing system.