Illumina HiSeq 2500 Next-Generation Sequencing System

Overview

The Illumina HiSeq 2500 Next-Generation Sequencing System is a high-performance, dual-mode sequencing platform engineered for precision, scalability, and reproducibility in academic, clinical research, and core facility environments. Based on Illumina’s proprietary sequencing-by-synthesis (SBS) chemistry and patterned flow cell technology, the HiSeq 2500 delivers robust performance across both high-throughput (HT) and rapid run configurations—enabling laboratories to balance depth of coverage with experimental turnaround time. Its optical detection system employs reversible terminator chemistry with four-color fluorescent dyes, ensuring base-calling fidelity and minimizing phasing/pre-phasing errors. The instrument supports cluster generation via isothermal bridge amplification and real-time imaging over multiple cycles, making it suitable for whole-genome sequencing, transcriptome profiling, epigenomic mapping, and targeted resequencing applications.

Key Features

• Dual operational modes: High-Throughput Mode (up to 1 terabase per 6-day run) and Rapid Mode (up to 120 gigabases in under 27 hours)
• Flexible read configuration: Single-read (SE) up to 150 bp and paired-end (PE) up to 2 × 150 bp, optimized for diverse library types including fragmented DNA, RNA-seq, ChIP-seq, and bisulfite-treated DNA
• Low input requirement: Compatible with ≥0.1 µg of genomic DNA or RNA-derived libraries, supporting limited-sample studies such as FFPE tissue or single-cell isolates
• High base-call accuracy: ≥98.5% raw read accuracy; consensus sequences achieve ≥99.99% accuracy at 3× coverage depth
• Robust homopolymer resolution: Capable of accurately resolving ≥12 consecutive identical nucleotides (e.g., poly-A tracts), critical for variant calling in repetitive regions
• Integrated cluster generation and sequencing: On-instrument bridge amplification eliminates manual cluster station dependency
• Modular design with field-upgradable components: Facilitates long-term serviceability and alignment with evolving protocol requirements

Sample Compatibility & Compliance

The HiSeq 2500 accepts standard Illumina-compatible libraries prepared using TruSeq, Nextera, or custom adapter ligation protocols. It supports DNA, RNA (including small RNA), bisulfite-converted DNA, and chromatin-immunoprecipitated fragments. All workflows adhere to Illumina’s validated library prep guidelines and are compatible with ISO/IEC 17025-accredited laboratory practices. While the system itself is not CE-IVD certified for diagnostic use, its RUO (Research Use Only) configuration meets FDA-listed device criteria and supports GLP/GMP-aligned data integrity when deployed with audit-trail-enabled software (e.g., BaseSpace Sequence Hub with 21 CFR Part 11-compliant user management). Instrument validation documentation—including IQ/OQ/PQ templates—is available upon request for regulated environments.

Software & Data Management

Data acquisition and primary analysis are managed through Illumina’s Control Software (v2.2.68+) and BaseSpace Sequence Hub—a cloud-based platform offering secure, role-based access control, automated pipeline execution (e.g., BWA-MEM, STAR, GATK), and integrated QC metrics (per-cycle quality scores, cluster density, Q30 distribution). Local analysis options include CASAVA v1.8.2+ and bcl2fastq conversion tools. Raw BCL files are archived in vendor-standard binary format; FASTQ outputs comply with SRA submission requirements (INSDC standards). Audit logs track user actions, parameter changes, and run status transitions—essential for regulatory traceability in QA/QC and clinical trial support labs.

Applications

• De novo genome assembly of non-model organisms using long-insert mate-pair libraries
• Whole-genome resequencing for SNP, indel, and structural variant detection across human and model organism genomes
• Transcriptome quantification (RNA-Seq) and isoform-level analysis via stranded, paired-end sequencing
• Small RNA profiling, including miRNA, piRNA, and tRNA expression dynamics
• ChIP-Seq and CUT&RUN for transcription factor binding site mapping and histone modification profiling
• Whole-genome bisulfite sequencing (WGBS) and reduced-representation approaches (RRBS) for methylation analysis
• MeDIP-Seq and hMeDIP-Seq for hydroxymethylation studies
• Hi-C and related 3D genomics assays for chromatin conformation and structural variation detection
• Targeted resequencing panels using hybridization capture or amplicon-based enrichment

FAQ

Is this unit refurbished or used?
This HiSeq 2500 system is a pre-owned instrument with verified operational history (3–4 years of prior use), fully tested and calibrated by SpectraLab Scientific’s certified field service engineers.
What warranty is included?
A comprehensive 6-month parts-and-labor warranty is provided, covering all core subsystems including optics, fluidics, thermal control, and onboard computing modules.
Are consumables and reagents included?
No. Flow cells, sequencing kits, cluster generation reagents, and index adapters must be procured separately from Illumina or authorized resellers.
Can the system run current Illumina software versions?
Yes—it supports Illumina Control Software v2.2.68+ and BaseSpace Sequence Hub, with compatibility confirmed for CASAVA v1.8.2 and later bcl2fastq converters.
Is technical support available post-purchase?
Yes. SpectraLab offers remote diagnostics, on-site service contracts, and application consulting for library preparation optimization, run troubleshooting, and data interpretation support.