Abstract: A network configuration method includes: obtaining, by a first application of a mobile device, label information of an internet of things device to be network-configured; obtaining, by the first application, information about a second application that is for configuring a network for the internet of things device; sending, by the first application, a first message to a first service of the mobile device, wherein the first message indicates to start the first service and comprises the information about the second application; discovering, by the first service, the internet of things device to be network-configured; sending, by the first service, a second message to a second service of the mobile device, wherein the second message indicates to start the second application and comprises the information about the second application; and starting, by the second service, the second application based on the second message.

Abstract: A two stage online solid phase extraction system including a first valve with a stator and a rotor. The stator includes a stator interface and a plurality of ports arranged into a plurality of port groups. The rotor includes a rotor interface abutting the stator interface, a first channel extending from an axial center of the rotor to at least a point on the rotor interface alignable with the common ports for fluid communication therewith; and a plurality of second channels, each second channel extending from at least a point on the rotor interface alignable with the common ports for fluid communication therewith to at least a point on the rotor interface alignable with the first non-common ports and/or the second non-common ports for fluid communication therewith.

Abstract: A multiple fluid selection valve including a stator and a rotor is provided. The stator includes a stator interface and a plurality of ports arranged into a plurality of port groups. Each port group has a common port and non-common ports. The non-common ports include a first non-common port and a second non-common port. The rotor includes a plurality of first channels, each first channel extending from an axial center of the rotor to at least a point on the rotor interface alignable with the common ports for fluid communication therewith. The rotor also includes a plurality of second channels, each second channel extending from at least a point on the rotor interface alignable with the common ports for fluid communication therewith to at least a point on the rotor interface alignable with the first non-common ports and/or the second non-common ports for fluid communication therewith.