The present disclosure provides a device for testing an analyte in a fluid sample and a receiving device for treating the fluid sample, wherein the receiving device is used for receiving an absorbing element; the receiving device comprises a accommodating chamber and the chamber comprises a piercing element that is movable in the chamber, wherein the piercing element has a first position and a second position in the accommodating chamber, and configured to pierce the first sealed chamber; the accommodating chamber comprises a treatment solution for treating a fluid sample. The assay device and receiving device of the present disclosure treats a sample and quickly obtain the assay result, which is especially suitable for quick assay of a roadside drug.

A method for dosing a liquid using a pipette with adjustable dosing step size and an indicating equipment and a syringe that can be operated using the pipette, wherein the syringe is detachably connected to the pipette, at option, the dosing step size is set, or the dosing step size set before is maintained, the dosing volume adjusted via the dosing step size is indicated by means of the indicating equipment, the maximum number of dosing steps possible without refilling the syringe, with the set dosing step size and completely filled syringe is indicated by means of the indicating equipment, liquid is aspirated into the syringe, a reverse stroke is performed after the syringe is filled with liquid, dosing steps are performed, the performed dosing steps are counted and the number of performed dosing steps and/or the number of dosing steps still possible without refilling the syringe is determined and indicated by means of the indicating equipment, after performing the maximum number of dosing steps possible without refilling the syringe, either the syringe is detached from the pipette, or the previous steps are performed anew by means of the same syringe, wherein in the dosing step, the overall performed number of dosing steps with the syringe with the set dosing step size is counted, and/or the number of dosing steps still possible without refilling the syringe is determined and indicated by means of the indicating equipment.

A pipette with an adjustable dosing increment, a display apparatus, a drawing lever to draw liquid into a syringe, and a control button to discharge liquid in steps from the syringe, and the syringe actuated by means of the pipette, wherein the syringe is releasably connected to the pipette, the dosing increment is optionally set, or the previously set dosing increment is retained, the dosing volume set by the dosing increment is displayed by means of the display apparatus, liquid is sucked into the syringe by actuating the drawing lever, the respective position of a drive element of a drive mechanism of the pipette for filling and draining the syringe when the drive element is shifted along a path is detected, the possible maximum number of dosing steps with the set dosing increment without refilling the syringe after executing the reverse stroke starting from the position of the drive element reached at the end of filling is determined and displayed by means of the display apparatus, after the syringe is completely or partially filled with liquid, the reverse stroke is executed by actuating the control button at least once, dosing steps are executed by actuating the dosing button, the executed dosing steps are counted, the number of executed dosing steps and/or the number of still possible dosing steps without refilling the syringe are determined and displayed by means of the display apparatus, and after executing the maximum possible number of dosing steps without refilling the syringe, either the syringe is removed from the pipette, or steps 1.2 to 1.8 are repeated with same syringe, wherein in step 1.8, the total number of dosing steps performed with the syringe with the set dosing increments is counted, and/or the number of still possible dosing steps without refilling the syringe is determined and displayed by means of the display apparatus.

The present technology is directed to extraction devices, systems, and methods for controllably withdrawing and transferring fluid samples, such as blood, from a sample collection container to a testing device. For example, some embodiments of the present technology provide fluid extraction devices that include a fluid control module, a housing containing a receiving element and a suction element, and an actuator. To transfer blood from a sample collection container to a testing device, a user places the sample collection container over the receiving element and inserts the testing device into an outlet of the fluid control module. The user then pushes a lever or otherwise actuates the actuator, which automatically withdraws a predetermined volume of blood from the sample collection container and transfers it to the testing device positioned at the outlet of the fluid control module.

This disclosure concerns a pipette system with an interchangeable volume counter. Aspects of the pipette body design and external dimensions allow various functional features of the pipette system, and, thus, various interior adjustment part designs and dimensions, to be accommodated in a single pipette body design. A three-digit volume counter, a four-digit volume counter, or an electronic counter can be installed in the same pipette body design.

In order to improve the ergonomics of a sampling pipette, the invention provides a control member intended to occupy a nominal central position in which a spring brings a locking member into the locking position thereof of the system for adjustment of the volume to be sampled, the member being able to be axially displaced towards each of the two following positions: a low position for ejecting a cone, in which the control member presses on the cone ejector, the movement from the nominal central position to the low position being carried out against the springs; and a high position for unlocking the braking ring, the movement of the control member from the nominal central position to the high position driving a disengagement element to move the locking member against the spring, until release of the braking ring.

Provided is a multichannel pipette whose number of channels can be arbitrarily set and managed to improve usability of the multichannel pipette and improve productivity, quality control, and maintainability in a research site. A multichannel pipette includes a pipette main body, a lower part attached to a lower end portion of the pipette main body, and a plurality of chip holder units housed inside the lower part, wherein each of the chip holder units has a connecting portion attachable to and removable from any of a plurality of to-be-connected portions provided in a unit case inside the lower part, and each of the chip holder units is attachable to and removable from the lower part.

A pipette quickset volume adjustment mechanism having various modes of operation. The quickset volume adjustment mechanism provides for easy selection between at least a direct drive mode, and a speed multiplying mode that hastens pipette volume changes. The quickset volume adjustment mechanism incorporates a planetary gearbox that is appropriately and selectively settable to produce the various modes of operation.

A pipette quickset volume adjustment mechanism having various modes of operation. The quickset volume adjustment mechanism provides for easy selection between at least a direct drive mode, and a speed multiplying mode that hastens pipette volume changes. The quickset volume adjustment mechanism incorporates a gear train, the individual gears of which are appropriately and selectively engageable or disengageable to produce the various modes of operation.

A pipetting device includes a housing, a valve assembly, and an actuator assembly. The housing includes a tip for receiving a capillary tube. The valve assembly includes a shuttle valve having a filling position and a dispensing position and a valve rod. The actuator assembly includes an actuator, a valve trigger, a piston mount, and an indexing mechanism. The actuator extends from the housing and has a push button coupled to a push rod. The valve trigger being configured to engage the valve assembly and includes an aperture configured to receive the piston mount therein. The indexing mechanism is configured to index a rotated position of the push button to a predefined volume of dispensed fluid.