Jiayuan JYH-100 Metal Block Thermostat

Overview

The Jiayuan JYH-100 Metal Block Thermostat is a microprocessor-controlled dry-block heating system engineered for precise, stable, and reproducible thermal management of small-volume samples in laboratory environments. Unlike traditional water baths—prone to evaporation, contamination, and inconsistent heat transfer—the JYH-100 utilizes solid aluminum alloy heating blocks with optimized thermal mass and high-efficiency resistive heating elements to deliver rapid, uniform temperature distribution across the entire sample zone. Its operational principle relies on conductive heat transfer directly from the calibrated metal block to sample tubes or plates, eliminating convective variability and ensuring minimal thermal lag. Designed for routine use in molecular biology, clinical diagnostics, pharmaceutical QC, food safety testing, and environmental analysis labs, the JYH-100 supports critical protocols including enzyme activation, DNA denaturation prior to PCR, serum coagulation, antigen-antibody incubation, and reagent equilibration.

Key Features

• High-resolution backlit blue LCD display with intuitive dual-parameter interface: independent setting and real-time monitoring of both temperature and timer (countdown mode)
• Rapid thermal response: achieves full setpoint (e.g., 100°C from 25°C) in ≤12 minutes, with typical stabilization time <60 seconds after loading standard 1.5 mL tubes
• Temperature accuracy of ±0.1°C and uniformity of ≤±0.3°C across the active block surface—validated per ASTM E220 and ISO/IEC 17025 traceable calibration practices
• Integrated auto-calibration function for user-adjustable temperature offset compensation, supporting lab-specific validation requirements
• Dual safety architecture: hardware-based overtemperature cutoff (independent of control circuitry) plus software-monitored fault detection with audible alarm and visual error code display
• Energy-efficient design consuming ≤150 W at peak load; silent operation with zero moving parts or cooling fans
• Compact footprint (260 × 195 × 150 mm) and low profile enable placement inside biosafety cabinets or under fume hoods without airflow interference

Sample Compatibility & Compliance

The JYH-100 accepts interchangeable aluminum or stainless-steel modular inserts—each precision-machined to ISO-standard tube dimensions and validated for thermal consistency. Compatible formats include 0.2 mL PCR strips, 0.5–2.0 mL microcentrifuge tubes, 96-well PCR plates (flat-bottom), 6–50 mL conical tubes (with optional rotating modules rated up to 600 rpm), and custom square-well blocks. All modules are autoclavable (121°C, 20 min) and chemically resistant to common solvents and disinfectants. The device complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets CE marking requirements for EMC (EN 61326-1) and low-voltage directives. While not FDA 510(k)-cleared as a medical device, its performance characteristics align with CLIA-waived instrument expectations for temperature-critical pre-analytical steps.

Software & Data Management

The JYH-100 operates as a standalone instrument with no embedded software or network connectivity—ensuring deterministic behavior, immunity to cybersecurity threats, and full compatibility with GLP/GMP environments requiring audit-trail-free operation. All settings and runtime data are retained in non-volatile memory during power loss. For laboratories implementing 21 CFR Part 11 compliance, external validation documentation—including IQ/OQ/PQ protocols, temperature mapping reports (per USP ), and calibration certificates traceable to NIST standards—can be generated using third-party thermocouple loggers (e.g., Fluke 175 or Omega HH309A). Optional RS-232 output (available on request) enables integration into LIMS via serial command scripting.

Applications

• Molecular biology: DNA/RNA denaturation (95°C for 5 min), restriction enzyme digestion (37°C), ligase incubation (16°C), and hot-start PCR setup
• Clinical labs: Serum clotting (37°C, 30 min), plasma separation pre-centrifugation, and immunoassay reagent warming
• Pharmaceutical QC: Dissolution media preheating, extract stability studies, and excipient melting point verification
• Food & environmental testing: Enzyme-linked immunosorbent assay (ELISA) plate incubation, coliform enrichment media activation, and pesticide residue extraction
• Academic research: Cell lysis buffer equilibration, protein denaturation kinetics, and nanoparticle synthesis temperature ramping

FAQ

Does the JYH-100 support sub-ambient temperature operation?
No. The JYH-100 is a heating-only dry block thermostat with a minimum operating temperature of ambient +5°C. For refrigerated applications, consider the companion JYC-100 model (–10°C to 100°C) with Peltier cooling.
Can I validate temperature uniformity across the block?
Yes. The unit includes a dedicated calibration port for inserting a reference thermometer (e.g., Fluke 1523 with 5615 probe). We recommend mapping ≥9 points (center + 8 perimeter locations) per module type per SOP.
Are replacement modules available with NIST-traceable calibration certificates?
Yes. All standard modules (A–J) ship with individual calibration reports. Custom modules (N-series) require separate certification at additional cost.
What maintenance is required?
None beyond periodic cleaning of the block surface with 70% ethanol and inspection of module seating integrity. No lubrication, filter replacement, or firmware updates are necessary.
Is the JYH-100 suitable for GMP-regulated manufacturing environments?
Yes—when deployed with documented IQ/OQ/PQ, defined change control procedures, and integrated into a temperature-monitoring system with alarm logging per Annex 15 and EU GMP Chapter 3.