Multisizer 4e Coulter Counter 75N98026Q00434
Summary
AI-generated · May 23, 2026 Multisizer 4e Coulter counter required to measure cell size, counts, and distribution using the Coulter method across multiple clinical research study protocols. Must include patented digital pulse processing, automatic aperture blockage detection and clearing during runs, and a barcode scanner for samples, electrolytes, aperture tubes, and sample beakers; with fluid level monitoring and a stirrer whose speed and direction can be adjusted. Specifications call for a sizing range of 0.2–1,600 μm; measurement range of 2–80% of the aperture size; diameter linearity of 1% and volume linearity of 3%; and a dynamic range of 1:40 (diameter) and 1:64,000 (volume). The system must accurately determine cell number, size, distribution, and concentration, and provide comprehensive data on particle count, sizing, and volume distribution (including diameter, volume, area, and related percentages), plus time-stamped pulse data and the ability to handle up to 400 size classes with reprocessing without re-running samples.
Capable of up to 525,000 time-stamped pulses per analysis and operable in Total Count, Modal Count, and Volumetric Count modes. Includes a Digital Pulse Processor with high-speed signal digitization and real-time volume-change detection; a stirrer with adjustable speed/direction; 100 μm and 400 μm aperture tubes, with the instrument able to use apertures from 10 μm to 2,000 μm (with calibration/verification). Uses 100/200 mL beakers and supports Isoton II Diluent and Coulter Clenz solutions, plus spigot assemblies. Comes with a Mixed Standards Kit (L2, L5, L10, L20, L40) and a 300 μM particle standard, with installation included.
The required Multisizer provides improved functionality and analysis capabilities, in addition to allowing continued measurement of cell size, counts, and distribution using the Coulter method across multiple clinical research study protocols. Specifications & Requirements The product shall include/use: Coulter method of measurement using patented digital pulse processing technology Automatic aperture blockage detection and clearing during runs and sample analysis Code scanner to scan bar codes on samples, electrolytes, aperture tubes, and sample beakers Fluid level monitoring for solutions and waste Selectable stirrer speed and direction Particle sizing range: 0.2 1,600uM Measurement range: 2 80% of aperture size Measurement linearity: Diameter 1%, Volume 3% Dynamic range (accuracy): 1:40 (diameter), 1:64,000 (volume) Accurate determination of sample cell number, size, distribution, and concentration Particle count, sizing, and volume distribution data, including diameter, volume, and area of number, number percent, number per mL, volume, volume percent, volume per mL, surface area, surface area percent, surface area per mL Pulse distribution data, including time, sequence and width for pulse height diameter, pulse height volume, pulse height volt, pulse width, pulse area, average pulse height diameter, average pulse height volume and average pulse width. Number distribution by width. Up to 400 size classes or channels with the ability to change number of size classes or channels and width and reprocess as needed without having to re-run the samples Time-stamped pulses up to 525,000 per single analysis Modes for Total Count (up to 500,000 counts), Modal Count (up to 100,000 counts), and Volumetric Count (up to 2000uL) Digital Pulse Processor with proprietary high-speed signal digitalization Real time detection of volume changes Stirrer with ability to adjust stir speed and direction for even particle distribution in sample suspensions 100uM and 400uM size aperture tubes, with instrument ability to use apertures ranging from 10uM up to 2000uM size as needed, with aperture tube calibration and verification 100/200mL beakers, with ability to use additional size beakers and accuvettes, as required by the sample type, sample volume, or other need Isoton II Diluent and Coulter Clenz solutions for instrument operation and cleaning, and spigot assemblies for both solutions Mixed Standards Kit (L2, L5, L10, L20, L40) 300uM Particle Standard Installation
From Presolicitation posted on May 22, 2026Notice history
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Presolicitation LATEST Posted May 22, 2026
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USA