The invention relates to an apparatus for analyzing reactions, comprising at least one reactor (1) and at least two sample vessels (13), wherein, in the case of an apparatus having one reactor (1), the reactor (1) is connected to at least two sample vessels (13), and, in the case of an apparatus having more than one reactor (1), each reactor (1) is connected to at least one sample vessel (13). The invention further relates to a method of analyzing reactions in such an apparatus.

The invention relates to an apparatus (100) for collecting dust samples. The apparatus comprises a piston (102) and a cylinder (110) for holding the piston with a body having a hole (108) extending through the body. The cylinder (110) has a first end (112), which is open, the first end of the cylinder being slanted such that underside (130) of the cylinder extends farther than upper side (132). A mechanism (114) moves the piston between inward and outward positions. The apparatus gathers dust flowing past the piston into the hole of the piston when the piston is in the outward position and moves the gathered dust by moving the piston into the inward position. An input feed (116) is configured to spread fluid through the hole filled with dust to flush the dust to an output feed (118).

A testing device for testing the level of a selected chemical in central heating system water in a central heating system circuit comprises: a sample chamber for holding a sample of central heating system water, the sample chamber being connected to the central heating system circuit; means for controlling filling of the sample chamber with central heating system water from the central heating system circuit, and emptying of the sample chamber; at least one valve for isolating the sample of central heating system water from the heating circuit during testing; and optical testing apparatus including a light source and a detector, for measuring an optical property of the sample of central heating system water isolated within the sample chamber and thereby making a determination as to whether or not the level of the selected chemical in the water is greater than a predetermined threshold level.

A fluid sampler system includes a fluidic head including a gas aperture capable of communication with a pressurized gas source, a liquid conduit capable of communication with a sample reservoir, and a seal capable of forming a compression seal to the sample reservoir when gas pressure is applied to the sample reservoir through the gas aperture and capable of displacing a portion of the sample through the liquid conduit; and a positioning apparatus capable of positioning the fluidic head and the sample reservoir in communication with one another. A method for providing an aliquot of sample, includes forming a releasable compression seal to a reservoir including a liquid sample; pressurizing the reservoir with compressed gas; displacing an aliquot of the sample from the reservoir; and transferring the displaced aliquot of the sample to a location.

A sample pressure reducing system is provided that integrates various pressure applications into a single system that provides the end user with a high-integrity sample without damaging equipment. The system facilitates sampling high-pressure product into a low-pressure container. The system fills and transfers product to reduce pressure automatically and repeatedly.

The invention relates to an apparatus (100) for collecting dust samples. The apparatus comprises a piston (102) and a cylinder (110) for holding the piston with a body having a hole (108) extending through the body. The cylinder (110) has a first end (112), which is open, the first end of the cylinder being slanted such that underside (130) of the cylinder extends farther than upper side (132). A mechanism (114) moves the piston between inward and outward positions. The apparatus gathers dust flowing past the piston into the hole of the piston when the piston is in the outward position and moves the gathered dust by moving the piston into the inward position. An input feed (116) is configured to spread fluid through the hole filled with dust to flush the dust to an output feed (118).

Various aspects of the present disclosure are directed to methods and systems for in-situ accumulation of one or more substances from a liquid environment. In one embodiment of the present disclosure, a method is disclosed including placing a cartridge with a sorbent in the liquid environment, driving a liquid volume through the sorbent, and repeating the act of driving as a function of time.

Provided herein is a wastewater sampling system including: an inlet tube; an outlet port; a high-flow circuit fluidly coupling the inlet tube to the outlet port; a first pump, along the high-flow circuit, configured to pump wastewater through the high flow circuit; a sampling circuit, fluidly coupled to the high-flow circuit via a junction, comprising a solid waste filter fluidly coupled to the junction and a solid-phase extraction cartridge fluidly coupled to an outlet of the solid waste filter; a second pump along the sampling circuit; a controller configured to, during a sampling cycle at a first time, activate the first pump; at a second time, activate the second pump; and at a third time succeeding the second time by a sampling duration, deactivate the second pump.

The present application discloses a long-term, in-situ sampling and analysis device for sediment pore water and a method thereof. The long-term in-situ sampling and analysis device for sediment pore water includes a bracket, a probe, an elevator, a diverting device, a first water storage device, and a second water storage device, a peristaltic pump, a dissolved gas of sediment pore water analysis device and an in-situ environment measurement device. The present application can collect and store the sediment pore water in an in-situ, long-term and time-phased manner, and in low measuring error level.

A test device is provided, including: a test member, including a receive portion and a first connection portion, the receive portion including a receive groove and a wall portion formed the receive groove; a moving member, inserted into the receive groove, being rotatable and movable in an axial direction to the test member, including a second connection portion; a sample collection member, formed of deformed absorption material, disposed on the moving member and disposed within the receive groove; wherein when the moving member is rotated relatively to the test member, the at least one protruding structure is moved along the at least one spiral guiding slot to move the sample collection member to rotatably axially squeeze the wall portion.