Microplate Instruments

Cell Counter Accessories

<h2>What Are Cell Counter Accessories?</h2>
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Cell counter accessories are the consumable reagents and replacement components that enable continued, accurate operation of automated cell counters. They fall into three categories: consumable slides (single-use counting chambers loaded fresh for each sample); staining reagents (trypan blue, AO/PI kits, or other viability dyes used to prepare the cell suspension before counting); and instrument maintenance components (calibration beads for verifying counting accuracy, replacement light sources or LED modules, optical cleaning solutions for direct-pipette instruments, and software updates). Counting slides are the dominant consumables by volume and cost, typically used at one slide per sample (two counting chambers per slide provide technical duplicates). Because counting slides are instrument-specific (not interchangeable between brands), procurement must specify the correct instrument model. Third-party slides compatible with certain instruments (Countess-type, TC20-type) are available from alternative suppliers at a lower cost per slide; confirm compatibility and counting accuracy before switching from OEM slides. The two consumables needed for every cell count are a counting slide and a staining reagent; order both in sufficient quantity for your weekly sample volume, and maintain a stock of 4 to 6 weeks of slides to avoid workflow disruptions from supply delays.
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<h2>What You Will Find</h2>
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<ul>
<li>Disposable QuadSlides for accurate and consistent cell counting with QuadCount automated cell counters.</li>
<li>Standard test slides for instrument verification and performance checks.</li>
<li>Barcode scanners for streamlined sample identification and workflow management.</li>
<li>Cell counter accessories designed to support routine operation and maintenance of QuadCount automated cell counters.</li>
</ul>
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<h2>How to Choose Cell Counter Accessories</h2>
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Counting slides: OEM vs. third-party
Original equipment manufacturer (OEM) counting slides are validated for accuracy on the specific instrument and are the safest choice for regulated and research-critical workflows. They typically cost 0.80 to 2.00 USD per slide. Third-party alternative slides (for Countess II-compatible, TC20-compatible, and other common platforms) are available at 0.20 to 0.60 USD per slide, a significant cost reduction in high-frequency counting labs. Before switching to third-party slides, count the same samples on both OEM and third-party slides across a range of densities (1&times;105 to 5&times;106 cells/mL) and viability levels (above 90% and 70 to 80%) to verify equivalent accuracy and viability discrimination.
Trypan blue reagent: concentration and quality
Trypan blue for cell counting is supplied as a 0.4% solution (w/v) in phosphate-buffered saline. Dilute the cell suspension 1:1 with 0.4% trypan blue immediately before counting (resulting in 0.2% trypan blue in the counted mixture). Ensure the trypan blue solution is sterile-filtered (0.2 micron) and stored at room temperature away from light; degraded or contaminated trypan blue causes inconsistent staining intensity, compromising viability discrimination. Some automated cell counters use a proprietary pre-diluted trypan blue optimized for the instrument's imaging algorithm; confirm whether the instrument requires instrument-specific trypan blue or accepts a standard 0.4% solution.
AO/PI viability kits
Acridine orange (AO) and propidium iodide (PI) reagent kits are supplied as ready-to-use or concentrate formulations. AO penetrates all nucleated cells and fluoresces green (excitation 470 to 490 nm, emission 515 to 530 nm); PI enters only cells with compromised membranes and fluoresces red (excitation 530 to 550 nm, emission 610 to 640 nm). AO/PI kits are matched to the fluorescence filter configuration of the specific cell counter; confirm that the instrument has the appropriate excitation/emission channels before specifying a kit. Store AO/PI solutions protected from light; AO is stable for 12 months at 2 to 8 degrees C.
Calibration beads
Calibration bead sets contain fluorescent microspheres at known concentrations and known fluorescence intensities, used to verify that the cell counter's counting algorithm and fluorescence channels are performing within specification. Calibration should be performed at a defined frequency (monthly or quarterly, depending on the laboratory's quality management requirements) and after any instrument relocation, service, or software update. Store calibration beads at 2 to 8 degrees C protected from light; do not freeze.
Direct-pipette instrument cleaning accessories
Cell counters with direct-pipette optical counting surfaces (no disposable slide) require cleaning with manufacturer-specified optical surface cleaning solutions between every sample to prevent carryover. Cleaning kits typically include a low-detergent optical cleaning solution, lint-free optical wipes, and a rinse solution. Follow the manufacturer's cleaning protocol exactly; using inappropriate cleaning agents on the optical surface degrades the surface coating and permanently impairs counting accuracy.
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<h2>Specifications Context</h2>
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Counting slide chamber depth (most commonly 100 micrometers) determines the volume of suspension imaged per frame and affects cell density calculation. A non-standard chamber depth produces systematic counting errors; never use counting slides with unspecified or incorrectly specified chamber depths for quantitative cell density measurements. Trypan blue should not be left in contact with cells for more than 3 to 5 minutes before counting; prolonged exposure causes staining of live cells with compromised membranes from extended trypan contact, artificially reducing apparent viability. Set up the staining step immediately before counting, not in advance.
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<div class="pointer-events-none -mt-px h-px translate-y-[calc(var(--scroll-root-safe-area-inset-bottom)-14*var(--spacing))]" aria-hidden="true">To discuss product availability or get selection guidance,&nbsp;<a href="https://mbpinc.net/contact-us">contact the MBP team</a>.</div>

Standard Test Slide for QuadCount, pk of 1

The E7500-STS1 by Accuris Instruments is a standard test slide for performance verification of the Accuris QuadCount (E7500) Automated Cell Counter, sold as a single-slide pack. Use it before live cell counting sessions to confirm instrument accuracy and document QC for GLP or SOP compliance. Order via mbpinc.net/quickorder or contact MBP for institutional pricing.

Manufacture

Microplate Reader Accessories

<h2>What Are Microplate Reader Accessories?</h2>
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Microplate reader accessories are supplementary components that extend detection range, maintain instrument performance, and support compliance in regulated workflows. They fall into four groups: optical accessories (filters, filter cubes, and polarizers for wavelength selection in fluorescence and absorbance detection); illumination accessories (replacement xenon flash lamps, deuterium lamps, or LED upgrade modules that provide the excitation light source); calibration and validation tools (absorbance validation plates with certified reference values, fluorescence uniformity plates, and luminescence performance standards used to verify reader performance); and automation and software accessories (reagent injectors for kinetic luminescence assays, plate stackers for unattended batch reading, and software module licenses for 21 CFR Part 11 compliance, spectral scanning, or advanced kinetics). Because accessory designs are manufacturer-specific, a filter block designed for one plate reader brand will not fit another; always order accessories using the instrument's model number as the primary specification parameter. Filter sets are the most commonly needed accessory for multi-mode readers; confirm the filter block format and thread size for your specific reader model before ordering, as filter cube dimensions vary significantly between manufacturers and generations.
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<h2 dir="ltr">What you will find: </h2>
<ul>
<li data-section-id="23xybn" data-start="25" data-end="117">Replacement filters and optical accessories for maintaining microplate reader performance.</li>
<li data-section-id="71w1ic" data-start="118" data-end="209">Calibration and validation tools to support accurate and reproducible assay measurements.</li>
<li data-section-id="6jcbpl" data-start="210" data-end="312">Microplates and consumables compatible with absorbance, fluorescence, and luminescence applications.</li>
<li data-section-id="y9aam2" data-start="313" data-end="396">Replacement components and maintenance accessories for routine instrument upkeep.</li>
<li data-section-id="qoq7y7" data-start="397" data-end="523" data-is-last-node="">Accessories designed to support ELISA, cell-based assays, nucleic acid quantification, and other microplate-based workflows.</li>
</ul>
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<h2>How to Choose Microplate Reader Accessories</h2>
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Filter sets for fluorescence and absorbance.
Fluorescence filter sets (excitation filter, dichroic mirror, emission filter) must match both the fluorophore's excitation and emission spectra and the filter cube housing format of the specific reader. Most microplate reader filters use standard 25 mm diameter circular filters; some readers use 12 mm micro-filters. Common fluorescence filter sets: FITC/SYBR Green (Ex 485/12 nm, Em 520/10 nm); DAPI/Hoechst (Ex 360/40 nm, Em 460/40 nm); TRITC/PI (Ex 544/10 nm, Em 620/10 nm); Cy5 (Ex 620/10 nm, Em 680/10 nm). For absorbance, filter-based readers require individual narrow-bandpass filters at the wavelengths required by each assay protocol: 450 nm for ELISA, 595 nm for Bradford, 562 nm for BCA, 260 nm, and 280 nm for nucleic acid and protein.
Replacement lamps
Xenon flash lamps are the standard excitation source in high-quality fluorescence and absorbance microplate readers; typical lamp lifetime is 500 million flashes (approximately 3 to 5 years of daily use). Lamp output decreases gradually before failure; rising CV% in repeated measurements of the same standard is the first sign of lamp degradation. Replacement xenon flash lamps are model-specific; confirm part number from the instrument manual before ordering. Some instrument manufacturers have transitioned to LED-based excitation sources, which have much longer lifetimes (50,000+ hours) and do not require routine lamp replacement.
Calibration and validation plates
Calibration plates contain certified optical standards (neutral density filters, fluorescent reference dyes at known concentrations, or luminescent reference materials) in an SBS-format plate footprint for installation in the plate carriage. They are used to verify photometric accuracy, linearity, and inter-well uniformity (CV% across all 96 or 384 wells). These verifications are required in ISO 17025 accredited labs and GLP/GMP environments, and recommended as best practice for any lab relying on quantitative plate reader data. Validation plates are model-specific and must be re-certified periodically (typically annually) by the manufacturer.
Reagent injectors
Reagent injectors are syringe-pump accessories that dispense a defined volume of reagent into each well of a microplate immediately before or during reading, required for luminescence kinetic assays (luciferase, beta-galactosidase, flash luminescence from coelenterazine), where the signal decays rapidly after reagent addition. Single injectors add one reagent (e.g., luciferase substrate); dual injectors allow sequential addition of two reagents for sequential flash and glow luminescence detection. Injectors are model-specific and must be installed and calibrated by the manufacturer or a qualified service engineer.
Plate stackers and automation accessories
Plate stacker modules load and unload microplates automatically from a tray of 10 to 50 plates, allowing unattended overnight batch reading. Integration with laboratory robotics and LIMS extends this to fully automated plate reading workflows. Plate stackers are model-specific and typically sold as separate accessories from the reader. Confirm that the plate stacker is compatible with the specific plate type (96-well standard, 384-well, with or without sealing film) and the plate loading orientation.
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<h2>Specifications Context</h2>
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Filter bandpass width (the FWHM of the filter transmission curve) affects sensitivity and selectivity. Narrower bandpass filters (10 nm FWHM) improve selectivity by excluding off-target fluorophore emission but transmit less light, reducing signal. Wider bandpass filters (20 to 40 nm) transmit more light for a brighter signal, but may allow bleed-through from closely overlapping fluorophores. In multiplex assays with two or more fluorophores, narrow bandpass emission filters reduce spectral cross-talk between channels. Optical density (OD) of the blocking region outside the transmission band should be at least OD 5 to OD 6 for fluorescence filters to prevent light leakage from the excitation source from reaching the detector.
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To discuss product availability or get selection guidance,&nbsp;<a href="https://mbpinc.net/contact-us">contact the MBP team</a>.

Microplate Brochure

Wash bottle assembly (1 bottle with cap and tubing)

MW9600-WSHB by Accuris Instruments is an extra wash bottle assembly (1 bottle + cap + tubing) for the SmartWasher™96 Microplate Washer (MW9600 / MW9600-E). The auto-rinse function primes the dispensing tube and wash heads on installation, preventing cross-contamination and clogging when switching between wash reagents. Use as a direct replacement or as a dedicated second-channel buffer bottle in multi-buffer ELISA washing protocols.

Waste bottle assembly (1 bottle with cap and tubing)

The MW9600-WSTB by Accuris Instruments is a replacement waste bottle assembly (1 bottle with cap and tubing) for the SmartWasher96 microplate washer (MW9600 and MW9600-E). Keeps a spare on hand to eliminate downtime when the integrated waste-level sensor signals a full bottle during ELISA or cell-based plate washing.

Thermal Printer for MR-9600

The MR9600-TP by Benchmark Scientific (Accuris) is a direct thermal printer designed exclusively for the Accuris SmartReader 96 MR-9600 microplate absorbance reader, enabling on-demand hard-copy printouts of absorbance data for GLP documentation and routine assay records. No ink cartridges or ribbons are required.

Thermal Printer for MR-9600, 230V

SmartDrop Accessory Plate for UV-Range Microplate Readers

The MR9610-SDP SmartDrop by Accuris (Benchmark Scientific) is a micro-volume accessory plate for the Accuris MR9610 and MR9611 SmartReader UV-Vis microplate readers. It measures up to 16 nucleic acid or protein samples using less than 0.5 &micro;L per position&mdash;enabling A260, A260/A280, BCA, and Bradford measurements without a standalone nanodrop instrument.