MKN HH-S1 Digital Display Constant Temperature Water Bath
| Brand | MKN |
|---|---|
| Model | HH-S1 |
| Type | Immersion Water Bath |
| Heating Power | 300 W |
| Temperature Range | Ambient to 100 °C |
| Temperature Stability | ±0.5 °C |
| Chamber Dimensions (W×D×H) | 140 × 150 × 150 mm |
| External Dimensions (W×D×H) | 270 × 180 × 190 mm |
Overview
The MKN HH-S1 Digital Display Constant Temperature Water Bath is a precision-engineered immersion thermal platform designed for stable, uniform heat transfer to samples via water-mediated conduction. Operating on the principle of convective thermal equilibrium in a liquid medium, it delivers consistent temperature control across its stainless-steel bath chamber—enabling reproducible incubation, enzymatic reactions, sample thawing, reagent warming, and temperature-dependent solubilization protocols. Unlike dry-block heaters or oil baths, water baths provide superior thermal homogeneity and gentle, non-contact heating ideal for temperature-sensitive biological matrices, calibration standards, and volatile chemical solutions. The HH-S1 is engineered for routine use in academic teaching labs, QC/QA environments, and clinical support laboratories where reliability, ease of validation, and long-term operational stability are prioritized over high-throughput automation.
Key Features
- Single-well stainless steel bath tank fabricated from high-grade 304 stainless steel—electropolished for corrosion resistance, cleanability, and compliance with ISO 15190:2020 laboratory safety standards.
- Digital PID temperature controller with real-time LED display (0.1 °C resolution) and auto-tuning capability ensures rapid stabilization and minimal overshoot during setpoint transitions.
- Robust 300 W heating element integrated into the bath base provides efficient thermal recovery after sample insertion, achieving full 100 °C setpoint in ≤70 minutes from ambient conditions.
- Over-temperature protection circuitry with independent mechanical cut-off prevents thermal runaway and complies with IEC 61010-1:2010 safety requirements for laboratory equipment.
- Ergonomic front-panel layout with tactile push-button controls and clearly labeled status indicators simplifies operation for users across training levels—from undergraduate students to certified lab technicians.
Sample Compatibility & Compliance
The HH-S1 accommodates standard laboratory glassware including test tubes (up to 25 mm diameter), Erlenmeyer flasks (≤250 mL), beakers (≤400 mL), and sealed vials—provided total immersed volume does not exceed 3.0 L. Its open-bath configuration supports passive air exchange, eliminating pressure build-up during extended incubations. The unit meets general-purpose laboratory environmental requirements per EN 61326-1:2013 (EMC) and is suitable for use in GLP-compliant workflows when paired with documented calibration procedures. While not inherently 21 CFR Part 11 compliant, audit-ready temperature logs can be generated externally using calibrated NIST-traceable thermistors and validated data acquisition software.
Software & Data Management
The HH-S1 operates as a standalone analog-digital hybrid instrument with no embedded firmware or network interface. Temperature setpoints and current bath readings are displayed locally only; no onboard data logging or USB/RS-232 connectivity is provided. For regulatory traceability, users are advised to integrate external digital thermometers (e.g., Fluke 1523 or Omega HH309A) equipped with time-stamped recording and CSV export functionality. Calibration verification should follow ASTM E1137/E1137M–22 guidelines for liquid-in-glass and electronic thermometers used in thermal validation studies.
Applications
- Enzyme activity assays requiring precise 37 °C or 65 °C incubation windows
- Pre-warming of culture media, agarose gels, and antibody diluents prior to electrophoresis or ELISA
- Controlled hydrolysis of esters or glycosides in synthetic organic chemistry workflows
- Stabilization of reference standards during gravimetric analysis or volumetric calibration
- Thermal equilibration of pH electrodes and conductivity probes before field deployment
- Support of USP and compounding procedures where water-bath warming of sterile preparations is permitted under facility SOPs
FAQ
What is the maximum recommended water fill level for the HH-S1 bath chamber?
Maintain water depth between 80 mm and 140 mm—ensuring full submersion of sample containers while leaving ≥10 mm headspace to minimize evaporation-induced concentration drift and prevent overflow during thermal expansion.
Can the HH-S1 be used with solutions other than deionized water?
Yes, but only with low-conductivity, non-corrosive liquids such as glycerol-water mixtures (≤30% v/v) or silicone oil—subject to prior compatibility testing and revised calibration due to altered heat capacity and convection dynamics.
Is routine calibration required, and how often?
Per ISO/IEC 17025:2017 Clause 6.4.10, calibration against a NIST-traceable reference thermometer is recommended at installation, after any physical impact, and at least every six months for critical applications.
Does the HH-S1 include a drain valve?
No—the HH-S1 lacks a built-in drainage system; bath fluid must be manually decanted using appropriate PPE and waste disposal protocols in accordance with local environmental regulations.
What safety certifications does this unit carry?
The device conforms to IEC 61010-1:2010 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and carries CE marking for the European Economic Area; full test reports are available upon request from MKN’s authorized technical support channel.
