Pipetting containers, such as reservoirs, reservoir liners, microplates, PCR plates, microtubes and PCR tubes, include anti-vacuum channels on the bottom wall of the receptacle to prevent a pipette tip vacuum engaging the wall during aspiration. The groupings of anti-vacuum channels are located on the bottom surface facing upward into the basin that holds liquid samples or reagents. The anti-vacuum channels also lower the required working volume for pipetting and reduce liquid waste.

Many hand-held diagnostics are limited in their functionality due to the challenging physics associated with small dimensional systems. An example of this is capillary forces in hydrophilic systems, such as the tight retention of liquid passing through a small pore filtration membrane, or capillary force driven microfluidics where, to keep liquid flowing the dimensions of the system become so small that the flow rates are too low to be useful, or the manufacturing of such devices becomes uneconomical. This disclosure details methods to ‘reset’ the capillary force condition to avoid the requirement of transient pressure spikes associated with the breakthrough pressure of small pore membranes, and avoid the necessity of extremely small microfluidic channels, which can be useful in applications such as filtration of whole blood to plasma using only suction pressure or passive capillary pressure.

Pipetting containers, such as reservoirs, reservoir liners, microplates, PCR plates, microtubes and PCR tubes, include anti-vacuum channels on the bottom wall of the receptacle to prevent a pipette tip vacuum engaging the wall during aspiration. The groupings of anti-vacuum channels are located on the bottom surface facing upward into the basin that holds liquid samples or reagents. The anti-vacuum channels also lower the required working volume for pipetting and reduce liquid waste.

A qualitative and quantitative heavy metal analysis device and, more particularly, a qualitative and quantitative heavy metal analysis device implemented by a rotary platform are provided. The rotary platform device includes a main injection part which is positioned near a rotating shaft of a rotary platform, wherein the main injection part is configured to receive a fluid sample containing heavy metals, a pH adjusting part configured to adjust pH of the fluid sample, a detecting part coated with a chelating agent configured to initiate a color reaction with heavy metals in the fluid sample by spreading the pH-adjusted fluid sample into the detecting part, and a ruler for measuring a spreading distance of the color reaction, wherein the fluid sample moves from the main injection part through the pH adjusting part to the detecting part by a rotation of the rotary platform device.

A container to monitor a predefined level or to determine the density or viscosity of a medium associated with an object under measurement in the container. The container includes a plurality of sensors adapted to sense, in real time, a level of the object inside the container. In addition, one or more processors retrieve, in real time, the sensed level or the one or more sensed properties. The one or more processors determine, in real time, based on the sensed level or the one or more sensed properties, a current level of the object inside the container, or one or more current properties associated with the object inside the container.

A specimen container system and methods of use are described herein for capturing, storing and accessing fluids for lab testing. A cup is removably secured to a cap assembly. The cap assembly is comprised of cover and a lid which are connected by a hinge assembly having a biasing member for maintain the lid in an open position. An aperture in the cap has two sections that in combination with the lid decreases the contamination risk compared to prior art container system.

A device for visual quantification of an amount of target species in a sample solution. The device includes an inlet, a separator, and a trap. The inlet is arranged to receive the sample solution. The separator in fluid communication with the inlet and arranged to separate one or more species from the sample solution. The trap is arranged downstream of the separator, in fluid communication with the separator, and arranged to trap one or more species of the sample solution. The trap is arranged such that the trapped species is visible for determination of the amount of target species in the sample solution.

The invention concerns a filtration assembly (1) for microbiological testing and a method of using the filtration assembly for that purpose. The filtration assembly (1) comprises a ring-like membrane support (10) holding a filtration membrane (11), a cylindrical reservoir (20) of which opposite axial ends have openings and one axial opening is removably and fluid-tightly attachable to the membrane support (10) to define a sample volume adjacent to the filtration membrane (11) on one axial side of the membrane support (10); and a drain member (30) removably and fluid tightly attachable to the membrane support (10) to define a drain channel space adjacent to the filtration membrane (11) on an opposite axial side of the membrane support (10).

A collection bottle and a method for detecting a characteristic of a sample are provided. The collection bottle includes a body and a cover. The body of the collection bottle has an accommodating space. The cover of the collection bottle is removably assembled to the body of the collection bottle, and the cover includes a channel and a testing part. The channel of the collection bottle communicates the accommodating space and the outside environment. While the cover of the collection bottle is assembled to the body, the testing part extends toward the accommodating space.

A cartridge for evaluating the volume of an aliquot of liquid is described. The cartridge can have one or more well tabs that pivot into a position in which liquid dispensed into a corresponding well is placed in contact with a capillary and surface tension draws the liquid from the well into the capillary. Comparison of the liquid-air interface with markings on or near the capillary, can reveal the volume of liquid dispensed. One or more additional features, such as well tabs that are stable in a substantially vertical orientation and/or a groove for protecting and/or self-aligning the capillary can ensure that the device operates properly.