An aerosol-generating article may comprise a liquid storage portion containing a liquid aerosol-forming substrate, and a hydrochromic material provided on the liquid storage portion. The hydrochromic material has a first colour when in the presence of or when in contact with the liquid aerosol-forming substrate and a second colour when in the absence of or when not in contact with the liquid aerosol-forming substrate. An aerosol-generating system may comprise the aerosol-generating article, an aerosol-generating element, and an aerosol-generating device. An aerosol-generating device may comprise an electrical power supply, an electronic photosensor, and a controller configured to control a supply of electrical power from the electrical power supply based on a value of an optical property sensed with the electronic photosensor.

A nozzle for oil dispensing that includes; a connector, where the connector connects the nozzle to a hose during use; an outlet, where the outlet includes an opening for the dispensing of oil through the nozzle; a handle, where the handle activates the dispensing of the oil; and a digital readout placed on the face of the nozzle below handle, where the digital readout is visible during use. Further the present invention includes a method of volume measurement for an oil distribution nozzle that includes the steps of: integrating a measurement display into a Scully nozzle; providing a digital readout on the measurement display; placing the measurement display under a handle of the Scully nozzle; and measuring oil flow volume through the Scully nozzle.

Environmental friendly automotive fluid dispensing systems and are provided. One disclosed system provides for the controlled dispensing of an automotive fluid selected from multiple automotive fluids. A quantity of fluid to be dispensed can be designated and the system can dispense the designated quantity of the selected fluid. A pump assembly is used to transfer automotive fluid from a selected container to a dispensing gun in a controlled fashion. The product dispensing gun can include a check valve for preventing fluid from exiting the dispensing gun when no fluid is being transferred to the dispensing gun by the pump assembly.

An aerosol-generating article may comprise a liquid storage portion containing a liquid aerosol-forming substrate, and a hydrochromic material provided on the liquid storage portion. The hydrochromic material has a first colour when in the presence of or when in contact with the liquid aerosol-forming substrate and a second colour when in the absence of or when not in contact with the liquid aerosol-forming substrate. An aerosol-generating system may comprise the aerosol-generating article, an aerosol-generating element, and an aerosol-generating device. An aerosol-generating device may comprise an electrical power supply, an electronic photosensor, and a controller configured to control a supply of electrical power from the electrical power supply based on a value of an optical property sensed with the electronic photosensor.