JB Aqua Plus Series Analog Water Bath

Overview

The JB Aqua Plus Series Analog Water Bath is a precision-engineered constant-temperature immersion system designed for routine laboratory thermal conditioning of samples, reagents, and containers. Utilizing resistive heating elements coupled with analog proportional temperature control, the unit maintains stable thermal environments across a wide operating range—from ambient +5°C up to 98°C—with typical stability of ±1.0°C under steady-state conditions. Its robust stainless steel construction—comprising both inner tank and outer housing—ensures long-term resistance to corrosion, chemical exposure, and mechanical wear, making it suitable for high-throughput academic, clinical, and industrial QC laboratories. The analog control architecture provides intuitive, tool-free temperature adjustment via a calibrated rotary dial, eliminating software dependencies and reducing failure modes associated with digital interfaces. Designed in accordance with general laboratory safety principles, the series incorporates dual independent thermal cut-offs: one adjustable high-limit switch and a fixed dry-run safeguard that deactivates heating when fluid level falls below operational minimum.

Key Features

• Modular analog temperature controller with tactile rotary dial and clear scale markings for rapid, repeatable setpoint selection (10–99°C, 0.1°C resolution)
• Electropolished stainless steel tank and enclosure—fully weld-seamed and passivated for ISO 13485-compatible cleaning protocols
• Integrated insulated base minimizes heat loss to benchtop surfaces and improves energy efficiency by up to 25% compared to non-insulated alternatives
• Optically transparent blue polycarbonate dome lid (standard) reduces evaporation rate by >40% above 60°C and permits real-time sample observation without lid removal
• Select models (JB Aqua 12 Plus, 18 Plus, 26 Plus) feature factory-installed drain valves compliant with EN 61000-6-3 for controlled fluid discharge during maintenance cycles
• Multi-tier safety architecture: adjustable overtemperature cutoff, redundant thermal fuse, and low-level dry-run interlock
• Low electromagnetic emissions design—meets CISPR 11 Group 1, Class B limits for co-location with sensitive analytical instrumentation

Sample Compatibility & Compliance

The JB Aqua Plus accommodates standard laboratory vessels including glass beakers, polypropylene centrifuge tubes (0.5–30 mL), conical flasks, and assay plates. Its uniform temperature distribution—verified per ASTM E145 Annex A3—ensures ≤±0.8°C spatial deviation across the full working volume at 37°C and 60°C. All models comply with IEC 61010-1:2010 for electrical safety in laboratory equipment and carry CE marking under the EU Low Voltage Directive (2014/35/EU) and EMC Directive (2014/30/EU). While not certified for GMP or GLP-regulated workflows out-of-the-box, the analog control system supports audit-ready operation when paired with external calibrated thermometers traceable to NIST standards. Documentation packages include Factory Calibration Certificates (as-tested at 37°C, 60°C, and 95°C) and Material Declarations per RoHS 2011/65/EU.

Software & Data Management

As an analog-controlled instrument, the JB Aqua Plus does not incorporate embedded firmware, microprocessors, or data logging capabilities. This architecture eliminates cybersecurity vulnerabilities, firmware update dependencies, and validation overhead associated with 21 CFR Part 11-compliant digital systems. Temperature verification is performed externally using calibrated reference thermometers (e.g., Fluke 1523 or equivalent), with records maintained manually or within laboratory information management systems (LIMS). For labs requiring electronic audit trails, optional third-party USB or Bluetooth-enabled temperature loggers (e.g., Onset HOBO UX100-003) may be deployed alongside the bath—mounted directly into the water column via supplied probe holders. All accessory mounting points (e.g., lid ports, side rails) conform to ISO 8573-1 standardized fastener patterns for interoperability.

Applications

• Enzyme incubation and kinetic assays requiring precise thermal stabilization between 25°C and 45°C
• Sample thawing of cryopreserved cell suspensions, serum, and plasma under controlled ramp profiles
• Viscosity standardization of calibration oils prior to rotational rheometry (ASTM D2196)
• Pre-heating of culture media, agarose gels, and electrophoresis buffers prior to casting or loading
• Controlled solubilization of hydrophobic compounds in pharmaceutical formulation development
• Stabilization of reference standards during gravimetric analysis and volumetric calibration procedures
• Dual-chamber JB Aqua Dual Plus enables parallel processing of two independent thermal protocols—e.g., 37°C cell culture + 70°C enzyme inactivation—within a single footprint

FAQ

Is the JB Aqua Plus suitable for use with corrosive solutions such as acidic or alkaline buffers?
Yes—the electropolished 316 stainless steel tank exhibits excellent resistance to pH 2–12 aqueous solutions when operated within specified temperature limits; however, prolonged exposure to halide-rich media (e.g., >0.1 M NaCl above 80°C) requires post-use rinsing with deionized water.
Can the analog temperature dial be recalibrated in-house?
No—the dial is factory-aligned to a certified NIST-traceable reference thermometer; field recalibration is not supported. Users should verify accuracy periodically using an external calibrated probe.
What is the maximum recommended operating time at 98°C?
Continuous operation at 98°C is permitted indefinitely provided the unit remains filled to the MIN level mark and the polycarbonate lid is installed to limit evaporative loss and thermal drift.
Are replacement lids and racks available as spare parts?
Yes—all accessories—including AQL-series polycarbonate domes, LU-series stainless steel lids, J2 tube racks (for 10–30 mm diameters), and AQBT-series sample trays—are stocked globally and shipped with OEM part numbers for unambiguous ordering.
Does the drain valve option meet ISO 8573-7 purity requirements for compressed air systems?
No—the drain valve is a mechanical fluid-release component only; it carries no air quality certification. Its inclusion serves maintenance convenience, not pneumatic compliance.