DHS PCR-Sealer Plus 96-Well Microplate Heat Sealer

Overview

The DHS PCR-Sealer Plus is a precision-engineered manual microplate heat sealer designed for reliable, reproducible thermal sealing of 96-well PCR plates and compatible microplate formats. It operates on resistive heating principle with Peltier-assisted temperature regulation, delivering stable thermal profiles across the entire sealing surface. Unlike pneumatic or fully automated systems, the PCR-Sealer Plus employs an ergonomic lever-actuated pressure mechanism that ensures uniform contact force distribution—critical for minimizing edge lifting, delamination, or inconsistent seal integrity in downstream applications such as quantitative PCR (qPCR), digital PCR (dPCR), and long-term cryogenic storage. Its compact footprint and low-profile design enable safe integration within biosafety cabinets (Class II A2/B2), laminar flow hoods, and cold room environments—making it suitable for GLP-compliant sample preparation workflows in clinical diagnostics, public health laboratories, and academic research settings.

Key Features

• Lever-based mechanical actuation system engineered for consistent downward force distribution—reducing operator fatigue and improving inter-run reproducibility.
• Precise digital temperature control with ±0.1 °C accuracy over a broad operational range (ambient +5 °C to 200 °C), supporting diverse film chemistries including optical-grade, pierceable, adhesive, and standard polypropylene heat seals.
• Programmable sealing duration (1–9 seconds) with real-time LED display for parameter verification prior to actuation.
• Modular plate adapter system: two interchangeable frames included—PCR plate frame (for standard skirted/unskirted 96-well plates) and universal microplate/deep-well frame (compatible with ANSI/SLAS-standard 96-, 384-, and 24-well formats up to 85 mm height).
• Low-power thermal architecture (max 300 W) with rapid cooldown cycle (<60 seconds from 200 °C to ambient), enabling high-throughput batch processing without thermal drift.
• Compact benchtop form factor (230 × 395 × 310 mm) and lightweight construction (11 kg) facilitate mobility between cleanrooms, BSCs, and storage areas.

Sample Compatibility & Compliance

The PCR-Sealer Plus accommodates all common 96-well microplate geometries conforming to ANSI/SLAS standards—including full-skirted, half-skirted, and unskirted PCR plates; deep-well plates (up to 2.2 mL capacity); and standard flat-bottom microplates used in ELISA or cell culture assays. Seal compatibility extends to commercially available films: transparent optical films (for qPCR fluorescence detection), pierceable heat-seals (for automated liquid handling integration), pressure-sensitive adhesive films, and standard thermal polymer films. The device meets IEC 61010-1 safety requirements for laboratory electrical equipment and complies with RoHS Directive 2011/65/EU. While not FDA-cleared as a medical device, its thermal stability and repeatability support adherence to ISO 13485-aligned quality systems when deployed in IVD kit manufacturing or clinical lab workflows subject to CLIA or CAP accreditation.

Software & Data Management

As a manually operated instrument, the PCR-Sealer Plus does not incorporate embedded software or network connectivity. All operating parameters are set via front-panel membrane buttons and verified through a dual-digit LED display. No data logging, audit trail, or electronic record functionality is provided—consistent with its classification as a Class I general-purpose laboratory accessory under FDA 21 CFR Part 11 guidance. For labs requiring traceability, users may document sealing conditions (temperature, time, plate type, operator ID) in paper-based or LIMS-integrated SOP logs. Optional barcode label printing (via external USB printer) can be synchronized with plate IDs during sealing setup to maintain sample-chain-of-custody integrity.

Applications

• Sealing of pre-aliquoted PCR master mixes in diagnostic IVD kit production facilities.
• Preventing evaporation and cross-contamination during thermal cycling, especially in low-volume (<10 µL) qPCR reactions.
• Long-term archival storage of genomic DNA, cDNA, or clinical specimens at –80 °C or in liquid nitrogen vapor phase—where hermetic seal integrity directly impacts nucleic acid stability.
• Supporting high-throughput screening workflows in academic core facilities where microplate sealing precedes automated pipetting, centrifugation, or incubation steps.
• Enabling compliant sample handling in CDC-designated public health laboratories conducting infectious disease surveillance (e.g., SARS-CoV-2, influenza, RSV) under APHL-recommended biosafety protocols.

FAQ

Can the PCR-Sealer Plus accommodate 384-well plates?
Yes—when used with the optional universal microplate adapter frame (part #0401251-2), the device supports ANSI/SLAS-standard 384-well plates up to 14.35 mm height.
Is calibration required before first use?
No factory calibration is needed; however, periodic verification using NIST-traceable thermocouple probes is recommended per internal QA procedures every 6 months or after 500 sealing cycles.
What types of heat-seal films are validated for use?
DHS validates compatibility with ABgene AB-0771 (optical), Excel Scientific HS-96 (pierceable), and Thermo Fisher Scientific AB-0577 (adhesive) films—full compatibility matrix available upon request.
Does the unit support programmable multi-step sealing protocols?
No—the PCR-Sealer Plus executes single-parameter sealing only (fixed temperature and time per run). Multi-step thermal ramping requires external process controllers.
Is service support available outside mainland China?
Yes—DHS maintains authorized service partners in North America, EU, and APAC regions; warranty coverage applies globally for units purchased through certified distributors.