Esco SCR-2A1 PCR-Dedicated Vertical Laminar Flow Hood

Overview

The Esco SCR-2A1 PCR-Dedicated Vertical Laminar Flow Hood is an engineered environmental control solution designed exclusively for polymerase chain reaction (PCR) workflows where nucleic acid contamination prevention is non-negotiable. Unlike general-purpose laminar flow cabinets, the SCR-2A1 implements a unidirectional vertical airflow system—certified to ISO 14644-1 Class 5 (equivalent to Federal Standard 209E Class 100)—to deliver particle-free air across the entire work surface. This architecture eliminates turbulent eddies and stagnant zones, thereby minimizing the risk of amplicon carryover between samples or reagent batches. The unit complies with core biosafety and laboratory infrastructure guidelines supporting segregated PCR workflow design: separate pre-PCR (reagent preparation), PCR setup, and post-amplification analysis zones. Its structural integration—HEPA filtration, UV decontamination, interlocked safety shielding, and ergonomic illumination—ensures operational integrity in GLP-compliant and ISO/IEC 17025-accredited molecular biology laboratories.

Key Features

• Vertical laminar airflow generated by a low-vibration, brushless DC motor fan, delivering uniform velocity (0.275–0.325 m/s) across the full 630 × 538 mm work area—validated per ISO 14644-3 Annex B.
• Two-stage filtration system: a washable polyurethane pre-filter (capturing >90% of particles ≥5 µm) followed by a certified HEPA filter (EN 1822 H14 grade) with ≥99.995% efficiency at 0.3 µm—typical service life exceeds 3 years under standard lab usage conditions.
• Integrated 20 W, 253.7 nm germicidal UV-C lamp mounted behind the front panel, positioned to irradiate all exposed surfaces—including side walls and rear plenum—eliminating shadow zones common in conventional UV configurations.
• Adjustable digital UV timer (0–60 min) with real-time countdown display, enabling reproducible decontamination cycles aligned with institutional SOPs and USP environmental monitoring protocols.
• 5 mm thick UV-absorbing, β-radiation-resistant polycarbonate sash with dual-position spring-assisted hinge: fully open during operation; fully closed and interlocked during UV exposure—mechanically disabling UV activation unless fully sealed.
• Warm-white (5000 K) LED lighting integrated into the airflow path, providing uniform 400–500 lux illumination without disrupting laminar streamlines—reducing visual fatigue during extended pipetting sessions.

Sample Compatibility & Compliance

The SCR-2A1 supports routine handling of PCR master mixes, oligonucleotide primers, DNA/RNA templates, enzyme solutions, and sterile consumables—including 0.2 mL tube racks, 96-well plates, and microcentrifuge tubes. Its internal stainless steel 304 work surface and seamless chamber corners facilitate rapid disinfection with ethanol or quaternary ammonium agents. The unit conforms to IEC 61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and IEC 60335-1 (Household and Similar Electrical Appliances Safety). While not a biological safety cabinet (BSC), its design aligns with CLSI MM12-A2 recommendations for contamination control in molecular diagnostics and supports audit readiness for CAP, COLA, and ISO 15189 accreditation pathways.

Software & Data Management

The SCR-2A1 operates as a standalone hardware platform with no embedded firmware or network connectivity—intentionally eliminating cybersecurity risks and software validation overhead. All operational parameters (UV timer setting, fan status, sash position feedback) are managed via tactile push-button controls and LED indicators. For laboratories requiring traceability, manual log entries—such as UV cycle duration, date/time, operator ID, and pre-use visual inspection outcomes—can be recorded in paper-based or LIMS-integrated electronic logs compliant with FDA 21 CFR Part 11 when paired with appropriate audit trail configuration.

Applications

• Pre-PCR reagent aliquoting and master mix preparation in dedicated cleanrooms or modular PCR suites.
• Template DNA/RNA handling prior to thermal cycling, especially for low-copy-number targets (e.g., viral load quantification, single-cell genomics).
• Cloning vector ligation and transformation setup where plasmid carryover poses false-positive risk.
• NGS library preparation steps involving adapter ligation and index addition—where cross-contamination compromises multiplexing fidelity.
• Quality control testing of commercial PCR kits and reference standards in manufacturing environments governed by ISO 13485.

FAQ

Is the SCR-2A1 certified as a biological safety cabinet (BSC)?
No. It is a vertical laminar flow hood intended for product protection only—not personnel or environmental protection. It does not meet NSF/ANSI 49 requirements for Class II BSCs.
Can the HEPA filter be replaced in-house?
Yes. Filter replacement requires no tools and follows Esco’s documented procedure (included in the operator manual); annual certification by an ISO 17025-accredited service provider is recommended for regulated labs.
Does the UV lamp require periodic intensity verification?
Per CLSI EP29-A guidelines, UV irradiance should be measured annually using a calibrated radiometer; Esco provides optional NIST-traceable validation services.
What electrical certifications does the unit hold?
It carries CE marking per EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU, and is listed to UL 61010-1 by Intertek (ETL).
Is the SCR-2A1 suitable for RNA work?
Yes—when combined with RNase-free consumables and strict glove-change protocols, its particle-free environment significantly reduces exogenous RNase introduction risk.