PrismTech LS450 Flow Cytometry Sample Preparation Workstation

Overview

The PrismTech LS450 Flow Cytometry Sample Preparation Workstation is an automated, benchtop laboratory instrument engineered for pre-analytical standardization of clinical hematological specimens prior to flow cytometric analysis. It operates on a programmable liquid handling platform integrating precise positive-displacement pipetting, temperature-controlled incubation (ambient to 40 °C), orbital mixing, and barcode-driven sample tracking. Designed in accordance with ISO 15189 and CLIA-aligned workflow principles, the LS450 eliminates manual variability inherent in conventional TBNK (T-cell, B-cell, NK-cell) panel preparation—replacing sequential human interventions (e.g., blood aspiration, antibody addition, lysis reagent dispensing, timed incubation) with deterministic, repeatable process sequences. Its architecture supports both standalone operation and bidirectional integration with compatible flow cytometers, enabling end-to-end traceability from primary tube to acquisition-ready assay plate.

Key Features

• Automated liquid handling with ≥36 independent reagent positions, supporting multi-panel immunophenotyping workflows without manual reagent reloading
• Precision pipetting across a volumetric range of 5–1000 µL, with coefficient of variation (CV) <2% at volumes ≥10 µL per ISO 8655-6 validation protocols
• 45-position sample carrier accommodating standard 12×75 mm or 13×100 mm flow cytometry tubes; carrier design complies with ANSI/SLAS footprint standards
• Integrated 360° rotational barcode scanner—automatically decodes tube barcodes regardless of orientation, eliminating manual alignment and reducing operator dependency
• Dual-mode operation: Standalone mode enables preparation of samples destined for third-party cytometers (e.g., BD FACSLyric™, Beckman CytoFLEX™); Integrated mode provides seamless data and physical handoff to PrismTech’s proprietary flow cytometers via RS-232/Ethernet handshake
• Onboard incubation module with ±0.5 °C thermal stability over 5–40 °C range, programmable for multi-step timed incubations (e.g., 15-min antibody binding → 10-min lysis → 5-min wash)

Sample Compatibility & Compliance

The LS450 accepts whole blood, EDTA-anticoagulated peripheral blood, bone marrow aspirates, and PBMC suspensions. It is validated for use with common lysing reagents (e.g., ammonium chloride-based, commercial fix/lyse formulations) and fluorochrome-conjugated antibodies targeting CD3, CD4, CD8, CD19, CD56, and other lineage-specific markers. All fluidic pathways are constructed from chemically resistant PTFE and borosilicate glass components to prevent carryover and adsorption artifacts. The system meets IEC 61010-1 safety requirements for laboratory equipment and supports audit-ready electronic records compliant with FDA 21 CFR Part 11 when deployed with optional LIMS connectivity and user-role-based access control.

Software & Data Management

Controlled via PrismTech FlowPrep™ v3.x software (Windows 10/11 64-bit), the LS450 provides protocol-driven workflow execution with drag-and-drop assay builder functionality. Each run generates a timestamped, digitally signed audit trail containing pipette logs, temperature profiles, barcode reads, error flags, and operator ID. Raw metadata exports in CSV and XML formats support interoperability with major LIS/HIS platforms (e.g., Sunquest, Cerner). Optional GxP mode enables electronic signature capture, change control documentation, and automatic backup to network-attached storage—fully aligned with GLP and clinical laboratory accreditation requirements (CAP, COLA, CNAS).

Applications

• High-throughput immunophenotyping in reference laboratories processing >200 daily TBNK assays
• Biosafety-level-2 (BSL-2) environments requiring minimized manual handling of infectious or high-risk specimens (e.g., HIV, TB, sepsis screening)
• Resource-constrained settings where trained cytometry technicians are unavailable—standardizing inter-operator reproducibility across shifts
• Longitudinal clinical trials demanding strict pre-analytical consistency across multi-site specimen collection centers
• Quality assurance programs validating inter-laboratory concordance under ISO/IEC 17043 proficiency testing schemes

FAQ

Does the LS450 support custom assay protocols beyond preloaded TBNK templates?
Yes—users may define new protocols using FlowPrep™’s graphical workflow editor, specifying reagent order, volume, mixing speed/duration, incubation temperature/timing, and post-processing actions.
Can the LS450 interface with non-PrismTech flow cytometers?
In standalone mode, it prepares samples in standardized racks compatible with BD, Beckman Coulter, and Sony cytometers; no hardware coupling is required—only physical transfer of prepared tubes.
Is calibration verification supported on-site?
Yes—the system includes built-in gravimetric verification routines for pipette accuracy and precision, with results exportable as PDF reports for internal QA documentation.
What maintenance is required for long-term reliability?
Scheduled preventive maintenance includes quarterly fluidic path inspection, annual photodiode calibration of the barcode reader, and biannual firmware updates delivered via secure HTTPS portal.
How is data integrity ensured during power interruption?
The LS450 features non-volatile memory that retains all active protocol states and audit logs; upon recovery, it resumes from the last completed step without data loss or manual re-initiation.