Thermo Fisher Attune™ NxT Acoustic Focusing Flow Cytometer (Domestically Manufactured in Shanghai)
| Brand | Thermo Fisher |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Regional Classification | Domestically Produced Instrument |
| Model | Attune™ NxT Acoustic Focusing Flow Cytometer (Domestically Manufactured) |
| Pricing | Available Upon Request |
Overview
The Thermo Fisher Attune™ NxT Acoustic Focusing Flow Cytometer (Domestically Manufactured in Shanghai) is a compact, benchtop flow cytometry platform engineered for high-throughput, high-fidelity single-cell analysis in academic, clinical, and industrial laboratories. Unlike conventional hydrodynamic focusing systems, the Attune NxT employs acoustic-assisted sample core positioning—leveraging ultrasonic standing waves to precisely center particles within the sheath stream without physical constriction. This non-contact focusing mechanism enables stable, laminar sample flow at rates up to 1,000 µL/min while maintaining optimal signal-to-noise ratio and minimal coefficient of variation (<3% for CV of fluorescence intensity). The system supports up to four spatially separated lasers (including 405 nm, 488 nm, 561 nm, and 637 nm) and up to fourteen fluorescence detection channels with configurable optical filters and high-quantum-efficiency photomultiplier tubes (PMTs), enabling comprehensive multicolor panel design for complex immunophenotyping, cell cycle, apoptosis, and functional assays.
Key Features
- Acoustic focusing technology ensures consistent sample core alignment independent of sample viscosity or clogging-prone particulates—significantly reducing downtime and improving assay reproducibility.
- Benchtop footprint (54 × 59 × 44 cm) with integrated fluidics, temperature-controlled sample chamber (4–40 °C), and self-contained waste and sheath reservoirs.
- Four-laser excitation architecture with individually adjustable power output (up to 100 mW per laser) and real-time power monitoring for longitudinal instrument performance tracking.
- High-sensitivity detection across UV to near-IR spectrum (350–900 nm), optimized for tandem dyes (e.g., PE-Cy7, APC-H7), quantum dots, and novel fluorophores.
- Optional Attune CytPix imaging module integrates a 2.3 MP monochrome CMOS camera synchronized to flow events, capturing brightfield images of individual cells at >1,000 frames/sec during acquisition.
- Onboard data processing engine supports real-time image-based gating, morphology extraction (area, perimeter, circularity, texture), and correlation with fluorescence parameters without external computational load.
Sample Compatibility & Compliance
The Attune NxT accommodates diverse biological samples including whole blood, PBMCs, dissociated tissues, microbial suspensions, and microvesicles—with no requirement for pre-filtration in most routine applications. Its low-shear acoustic focusing preserves fragile cell populations (e.g., stem cells, rare circulating tumor cells) and minimizes activation artifacts. The system complies with IEC 61010-1:2010 for laboratory equipment safety and meets electromagnetic compatibility standards per EN 61326-1. Optional 21 CFR Part 11-compliant software modules include electronic signatures, audit trails, role-based access control, and secure data archiving—supporting GLP, GCP, and regulated biomanufacturing workflows. All instruments manufactured in Shanghai undergo identical factory calibration, IQ/OQ documentation, and traceable metrology against NIST-traceable reference beads as globally distributed units.
Software & Data Management
Instrument operation and data analysis are managed through Attune Software v4.x (Windows-based), featuring intuitive workflow-driven acquisition, customizable templates, and automated compensation matrix generation. Raw FCS 3.1 files are natively generated with embedded metadata (instrument settings, lot numbers, user ID, timestamp). The software supports batch processing, spectral unmixing for high-parameter panels, and export to industry-standard formats (CSV, HDF5, FlowJo-compatible .wsp). For regulated environments, the optional Compliance Pack delivers full 21 CFR Part 11 functionality—including immutable audit logs recording all parameter changes, file modifications, and user actions with timestamps and digital signatures. Data integrity is further ensured via automatic checksum validation upon file save and encrypted local storage options.
Applications
- Immunology: Multiparametric T/B/NK cell subset profiling, activation marker kinetics, cytokine intracellular staining.
- Oncology: Minimal residual disease (MRD) detection, hematopoietic progenitor enumeration, CTC enrichment and characterization.
- Stem Cell Research: Viability assessment, differentiation status tracking using surface and intracellular markers.
- Virology & Infectious Disease: Viral transduction efficiency, host cell response profiling, phagocytosis assays.
- Cell Therapy QC: Identity, purity, potency, and viability testing per USP , ISO 20387, and FDA guidance documents.
- CytPix-enabled Morpho-Phenotyping: Correlating nuclear condensation (apoptosis), cell size heterogeneity, and granular content with fluorescence signals—enhancing diagnostic confidence in heterogeneous samples.
FAQ
Is the domestically manufactured Attune™ NxT functionally identical to the U.S.-assembled unit?
Yes. Units produced in Thermo Fisher’s Shanghai facility adhere to the same design specifications, calibration protocols, and quality control standards—including final verification with Rainbow Calibration Particles and CS&T (Cytometer Setup & Tracking) performance validation.
Does acoustic focusing eliminate the need for sample filtration?
While filtration remains recommended for highly aggregated or debris-rich samples (e.g., tissue digests), acoustic focusing significantly increases tolerance for particulates—reducing filter clogging frequency by >80% compared to hydrodynamic systems.
Can the CytPix imaging module be retrofitted to existing Attune NxT systems?
CytPix is a factory-installed option requiring hardware-level synchronization between camera trigger circuitry and fluidics timing; field retrofitting is not supported.
What regulatory documentation is provided for instruments manufactured in Shanghai?
Each unit ships with full IQ/OQ documentation, Certificate of Conformance, Factory Calibration Report, and Material Declaration per RoHS/REACH—aligned with global Thermo Fisher regulatory submission packages.
