Microarray Equipment

Microarray equipment covers the instruments, consumables, and accessories used to fabricate, process, and read DNA, RNA, protein, and tissue microarrays — enabling simultaneous detection and quantification of thousands of biological targets from a single sample in genomics, transcriptomics, proteomics, and clinical diagnostic research workflows.

Microarray fabrication systems deposit biological probes — oligonucleotides, cDNA, antibodies, or protein antigens — onto glass, silicon, or polymer substrates at defined grid positions using contact printing or non-contact inkjet spotting. Contact microarray spotters use stainless steel split pins or quill pins that pick up probe solution and transfer nanoliter volumes to the array surface at spot diameters from 100 to 300 µm. Non-contact inkjet spotters eject picoliter droplets from piezoelectric or thermal print heads without touching the substrate — reducing spot diameter variation and eliminating cross-contamination between probe solutions. Furthermore, photolithographic synthesis platforms from Affymetrix and Agilent build oligonucleotide probes directly on the array surface base-by-base using light-directed chemistry — producing high-density arrays with up to 6.5 million probe features per slide.

Hybridization stations control the temperature, humidity, and agitation conditions during sample hybridization onto the array — maintaining uniform hybridization kinetics across all probe positions simultaneously. Washing stations remove non-specifically bound material through controlled buffer exchange and agitation cycles. Additionally, microarray scanners use confocal laser optics at 532nm and 635nm excitation wavelengths to measure fluorescence emission from labeled sample molecules bound to each probe position — generating high-resolution images at 5µm pixel resolution for quantitative signal extraction. Scanner systems such as the Agilent SureScan and Axon GenePix Pro 4300A deliver dynamic ranges exceeding 4 decades — resolving highly expressed and rare transcripts from the same hybridized sample.

Image analysis software extracts signal intensity values from scanner output images, performs background correction, normalization, and quality filtering, and exports processed expression matrices for downstream statistical analysis and pathway mapping.

These systems serve Pakistan’s university molecular biology and genetics research departments in Lahore and Karachi, Shaukat Khanum Memorial Cancer Hospital genomics programs, pharmaceutical biomarker discovery research organizations, PCSIR analytical research centers, and hospital clinical cytogenetics laboratories requiring high-throughput parallel gene expression and genomic copy number analysis capability.

Tactical Supply Pakistan supplies microarray equipment for genomics research, gene expression profiling, clinical cytogenetics, and pharmaceutical biomarker discovery procurement across Pakistan.