Allsheng MK-10 Dry Block Thermostat

Overview

The Allsheng MK-10 Dry Block Thermostat is a microprocessor-controlled, precision thermal incubation system engineered for consistent and reproducible temperature maintenance across diverse life science and clinical laboratory workflows. Unlike water baths—where evaporation, contamination risk, and thermal inertia compromise stability—the MK-10 utilizes solid aluminum heating blocks with optimized thermal mass and active PID feedback control to deliver rapid, uniform heat transfer directly to sample vessels. Its operating range spans from ambient +5°C to 100°C, supporting critical protocols including enzyme storage, nucleic acid denaturation, PCR setup, serum coagulation, and electrophoresis pre-denaturation steps. The device conforms to fundamental thermal safety and electromagnetic compatibility requirements under the CE marking framework, ensuring compliance with EU Directive 2014/30/EU (EMC) and 2014/35/EU (LVD).

Key Features

• PID-controlled digital temperature regulation with real-time display and countdown timer functionality
• High-uniformity aluminum block architecture delivering ±0.5°C stability at 100°C and ±0.1°C display resolution
• Integrated over-temperature cut-off and intelligent fault diagnostics with audible alarm notification
• Quick-release modular design enabling tool-free interchange of tube-specific blocks (e.g., for 0.2 mL, 0.5 mL, 1.5 mL, 2.0 mL, or 15/50 mL tubes)
• Front-panel membrane switch interface with backlit LCD for intuitive operation in low-light environments
• Multi-step programmable protocol capability: up to five sequential temperature–time segments for unattended operation
• Robust thermal insulation and compact footprint (300 × 220 × 180 mm) suitable for benchtop integration in ISO-certified cleanrooms or GLP-compliant QC labs

Sample Compatibility & Compliance

The MK-10 supports standardized conical, round-bottom, and PCR-compatible tubes without requiring adapters or auxiliary fixtures. Its interchangeable block system accommodates common formats used in molecular biology, clinical diagnostics, and pharmaceutical quality control—including ASTM E2927-22-compliant sample containers for thermal stability testing. While not classified as a medical device under FDA 21 CFR Part 820, the unit’s CE certification confirms adherence to essential health and safety requirements for laboratory electrical equipment. Its non-liquid heating mechanism eliminates biohazard risks associated with water bath cross-contamination, aligning with CLSI GP26-A4 guidelines for reagent incubation integrity.

Software & Data Management

The MK-10 operates as a standalone instrument with no external software dependency; all configuration and runtime parameters are managed locally via the embedded controller. However, its precise time–temperature logging capability—combined with traceable calibration offsets—supports manual audit trails required under GLP and GMP Annex 11 principles. Users may document calibration events (including deviation correction values), operational logs, and maintenance records in accordance with internal SOPs. Though it lacks USB or Ethernet connectivity, its deterministic thermal performance enables reliable inclusion in validated workflows where electronic data integrity is maintained through procedural controls rather than automated capture.

Applications

• Thermal stabilization of restriction enzymes, ligases, and reverse transcriptases prior to reaction initiation
• Controlled denaturation of DNA templates and RNA samples for downstream sequencing library preparation
• Pre-warming of agarose gels and electrophoresis buffers to minimize thermal shock during loading
• Standardized clotting assays for coagulation factor assessment in clinical hematology
• Accelerated stability studies of protein formulations under defined thermal stress conditions
• Incubation of immunoassay reagents and ELISA plate coatings per manufacturer-recommended temperature profiles

FAQ

Is the MK-10 suitable for use in regulated environments such as pharmaceutical QC labs?

Yes—its stable thermal output, documented calibration traceability, and CE certification support integration into validated processes under ICH Q5C and USP guidance.
Can the temperature calibration offset be adjusted by the end user?

Yes—the device includes a user-accessible calibration correction function to compensate for minor sensor drift against NIST-traceable reference thermometers.
What safety mechanisms prevent overheating during extended runs?

An independent mechanical thermal cutoff switch activates above 110°C, while the primary PID controller continuously monitors block temperature and halts heating if deviation exceeds preset thresholds.
Are replacement blocks available for non-standard tube formats?

Allsheng offers OEM-compatible custom block fabrication upon request, subject to minimum order quantities and dimensional specifications aligned with ISO 8573-1 tolerances.
Does the MK-10 meet requirements for ISO/IEC 17025 accredited laboratories?

While the instrument itself is not accredited, its performance characteristics—including stability, repeatability, and documented calibration procedures—fulfill clause 6.4.10 (Equipment Verification) when incorporated into a lab’s metrological management system.