Hach Company

Other

Tintometer Gmbh

Hach Lange Gmbh

Perry A Palumbo

Brian Alan Harmon

Luke Waaler

Aria Farjam

Ulrich Lundgreen

Darren Kent MacFarland

Robert Stoughton

Leon E Moore

Jim Duncan

Jim Harbridge

William Louis Pherigo, Jr

Elmar Grabert

Bas De Heij

Jeffrey Mark Huhta

Richard P Kolman

Gangaikondan Ramasubiramanian Venkateraman

Paul D Schlegel

Jeffe Huhta

Darren Macfarland

Leon Moore

Nephelometric measuring devices are described. The nephelometric measuring devices can be configured such that an amount of scattered light having different pathlengths impingent upon one or more scattered-light detectors from a beam propagating through a suspension can result in substantially equivalent sensitivity and in correlation between the scattered-light detectors' response and a turbidity value of the suspension. The response of the scattered-light detector(s) receiving scattered light at a nephelometric angle of 85-110° from a beam of light propagating through the suspension can be in accordance to an equation selected from a group of non-linear equations where: x/y=aoxn+ ++a2x+aix+ao; where 'n' is an integer greater than 0; “x” is equal to the turbidity value of the suspension; “y” is equal to the response of the scattered-light detector; and “an” are calibration coefficients. The maximum response of the scattered-light detector occurs at a turbidity value dependent upon the effective scattered-light pathlength.

Nephelmotric measuring device(s)

Nephelometric measuring devices are described. The nephelometric measuring devices can be configured such that an amount of scattered light having different pathlengths impingent upon one or more scattered-light detectors from a beam propagating through a suspension can result in substantially equivalent sensitivity and in correlation between the scattered-light detectors' response and a turbidity value of the suspension. The response of the scattered-light detector(s) receiving scattered light at a nephelometric angle of 85-110° from a beam of light propagating through the suspension can be in accordance to an equation selected from a group of non-linear equations where: x/y=ax+ax+ . . . +ax+ax+a; where 'n' is an integer greater than 0; “x” is equal to the turbidity value of the suspension; “y” is equal to the response of the scattered-light detector; and “a” are calibration coefficients. The maximum response of the scattered-light detector occurs at a turbidity value dependent upon the effective scattered-light pathlength.

Nephelometric measuring device(s)

Embodiments of the present invention include a backscatter reductant anamorphic beam sampler. The beam sampler can be implemented to measure a power of a reference beam generated by an electromagnetic radiation source in proportion to a power of a working beam. The beam sampler can provide astigmatic correction to a divergence of the working beam along one axis orthogonal to a direction of propagation. The beam sampler can further be implemented to prevent backscatter reentrant radiation from impinging upon a photodetector of the beam sampler resulting in a reduction of error and instability in an assay of the working beam.

Backscatter reductant anamorphic beam sampler

Embodiments of the present invention include a device for removing energy from a beam of electromagnetic radiation. Typically, the device can be operatively coupled to a turbidity measuring device to remove energy generated by the turbidity measuring device. The device can include a block of material having one of a plurality of different shapes coated in an energy absorbing material. Generally, the device can include an angled or rounded energy absorbing surface where the beam of electromagnetic radiation can be directed. The angled or rounded energy absorbing surface can be configured to deflect a portion of the beam of electromagnetic radiation to a second energy absorbing surface.

Device for removing energy from a beam and a method(s) of use thereof

An embodiment provides a method, including: operating a motor to position sample fluid within a fluid channel of a cuvette; transmitting light through an optical chamber of the cuvette; measuring a value of received light that has been transmitted through the optical chamber; comparing the measured value of light to one or more thresholds; determining a position of the sample fluid within the fluid channel based on a comparison from the comparing step; and generating a response based upon the position of the sample fluid with the fluid channel. Other aspects are described and claimed.

Mobile water analysis

Embodiments of the present invention include a device for removing energy from a beam of electromagnetic radiation. Typically, the device can be operatively coupled to a turbidity measuring device to remove energy generated by the turbidity measuring device. The device can include a block of material having one of a plurality of different shapes coated in an energy absorbing material. Generally, the device can include an angled or rounded energy absorbing surface where the beam of electromagnetic radiation can be directed. The angled or rounded energy absorbing surface can configured to deflect a portion of the beam of electromagnetic radiation to a second energy absorbing surface.

Embodiments of the present invention include a backscatter reductant anamorphic beam sampler. The beam sampler can be implemented to measure a power of a reference beam generated by an electromagnetic radiation source in proportion to a power of a working beam. The beam sampler can provide astigmatic correction to a divergence of the working beam along one axis orthogonal to a direction of propagation. The beam sampler can further be implemented to prevent backscatter from impinging upon a photodetector of the beam sampler resulting in a reduction of error and instability in measurements taken by the beam sampler.

An embodiment provides a cuvette, including: a body having a fluid channel therein; and an outer surface having encoded information disposed thereon and readable by a reader of a sample instrument. Other aspects are described and claimed.

Embodiments of the present invention can be implemented to (i) verify that a liquid within a turbidity measuring device during an assay process is of the same origin of that upon which the assay was performed, (ii) verify a flow through the turbidity measuring device including, but not limited to, a turbidimeter, a nephelometer, a fluorimeter, or the like, and (iii) enact an alteration to measurement step(s) and/or determination step(s) of an assay process in correlation with one or more variables associated with the liquid sample including, but not limited to, flow rate, temperature, and pressure to reduce a standard error of the assay.

Compensating turbidity measuring device

Embodiments of the present invention can include a turbidity measuring device. Typically, the turbidity measuring device can include a fluidic module and a measurement module. The measurement module can removably couple to the fluidic module and be implemented to measure a turbidity of a liquid passing through the fluidic module. The fluidic module can include a sub-assembly that can form a deaerator within the fluidic module. In one instance, the deaerator can be implemented to separate entrained air and/or other gases from a continuous flow of liquid by means of nucleation before the liquid is assayed.

Turbidity measuring device

A nephelometric process turbidimeter for measuring a turbidity of a liquid sample includes a transparent sample vial which comprises a sample vial lateral inner surface. A vial head comprises a vial head lateral inner surface. The vial head and the sample vial together define a sample volume of a liquid sample having a shape of a cylinder. A sample inlet opening is arranged at the vial head and comprises an inlet opening axis. A sample outlet opening is arranged at the cylindrical vial head lateral inner surface to be axially closer to the sample vial than to the sample outlet opening. The inlet opening axis is inclined with respect to an inlet cross plane with an inclination angle of 10&#xb0; to 80&#xb0;, and is angled with respect to a radius line from a middle of the cylinder to the sample inlet opening with a tangency angle of more than 15&#xb0;.

Nephelometric process turbidimeter

One embodiment provides an annular optical device, comprising: an annular meso-optic having a substantially triangular cross section and including an annulus centered about an axis of revolution; and a secondary optical structure substantially coaxial within the annulus of the annular meso-optic, wherein the secondary optical structure and the annular meso-optic are separated by a media comprising a media refractive index that is lower than a secondary optical structure refractive index, with the secondary optical structure being configured to hold a specimen to be radiated by impinging electromagnetic radiation directed into the secondary optical structure substantially along the axis of revolution, wherein re-directed radiation from the specimen is allowed into the annular meso-optic by the secondary optical structure if an angle of incidence of the re-directed radiation exceeds the angle of Total Internal Reflectance. Other embodiments are descried and claimed.

Annular optical device

An embodiment provides a cuvette apparatus including: a lid and a body, the body including a fluid channel disposed therein; and the lid including at least one opening aligned with a portion of the fluid channel, thereby providing access to the fluid channel in the body. Other aspects are described and claimed.

A standard media suspension body () for verification and calibration of an optical particulate measurement instrument and configured to be at least partially immersed in a sample fluid is provided according to the invention. The body () includes a substantially solid outer surface including a first end () and a second end () disposed along an axis of illumination A and at least one outer surface (). The first end () is configured to admit impinging light. The suspension body further includes an inner volume. At least a portion of the inner volume includes a substantially suspended light scattering material () that is configured to scatter a predetermined quantum of the admitted light. The suspension body () further includes an end cap () formed on the second end () and comprising a light absorbing material. Light exiting the second end () is substantially absorbed by the end cap ().

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Ft. Collins, CO, United States of America

Perry A Palumbo