Julabo PURA 10 Universal Water Bath

Overview

The Julabo PURA 10 Universal Water Bath is a precision-engineered, CE-compliant temperature control system designed for consistent, reliable thermal conditioning of samples in research, quality control, and routine laboratory workflows. Based on Julabo’s proven Peltier-free resistive heating architecture and advanced PID-based digital temperature regulation, the PURA 10 operates across a broad working range from +5 °C to +99.9 °C—enabling applications from low-temperature incubation to near-boiling water bath protocols. Its stainless-steel bath chamber, integrated dry-run protection, and sloped bath rim design (which directs condensate back into the bath) collectively ensure long-term operational safety, reduced evaporation loss, and minimal user intervention. Engineered for ISO/IEC 17025-aligned laboratories, the unit complies with IEC 61010-1 for electrical safety and meets essential requirements for GLP-compliant environments where traceable, stable thermal conditions are mandatory.

Key Features

• Precision temperature control with ±0.15 °C stability at setpoint (measured at 37 °C in water, per DIN 12879)
• High-resolution LED display with 0.1 °C setting and readout resolution
• Full-immersion removable platform for uniform heat transfer and flexible sample placement
• IP21-rated front panel with waterproof membrane switches and sealed electronics for enhanced durability in humid lab settings
• Integrated overtemperature and dry-run protection circuits—automatically deactivates heating if sensor fault or low fluid level is detected
• Tilted bath rim geometry minimizes condensation accumulation on the lid and promotes automatic reflux of condensed moisture into the bath
• Standard drain outlet (on PURA 10 and larger models) facilitates rapid, spill-free bath emptying and cleaning
• Compact footprint (31 × 35 × 22 cm) optimized for benchtop use in space-constrained analytical or QC labs

Sample Compatibility & Compliance

The PURA 10 accommodates standard glassware including test tubes (up to two full-height racks), flasks, cuvettes, and immersion probes. Its open-bath configuration supports both direct immersion and indirect heating via auxiliary vessels. The bath volume range of 1.4–9.5 L allows flexibility in protocol scaling—from small-volume enzymatic assays to multi-sample thermal equilibration. All wetted components are constructed from corrosion-resistant stainless steel (AISI 304), making the unit suitable for mild aqueous solutions, buffer preparations, and non-aggressive reagents. It conforms to EN 61326-1 (EMC for laboratory equipment) and carries CE marking under the EU Machinery Directive. While not intrinsically rated for hazardous locations, its IP21 enclosure provides basic protection against vertically falling drips—sufficient for general-purpose lab use per ISO 15190:2020 (laboratory safety standards).

Software & Data Management

The PURA 10 operates as a standalone analog-digital hybrid controller without onboard data logging or USB/Ethernet connectivity. Temperature setpoints, real-time bath readings, and alarm status are displayed locally via the high-contrast LED interface. For integration into validated systems requiring electronic records, external PT100-compatible data loggers (e.g., Testo 176 T4 or Omega OM-DAQPRO-5300) may be connected via the optional analog output port (0–10 V or 4–20 mA, sold separately). All operational parameters—including alarm triggers, power-on defaults, and sensor calibration offsets—are factory-configured and non-user-modifiable, supporting audit readiness under FDA 21 CFR Part 11 when paired with compliant third-party acquisition software and procedural controls.

Applications

• Routine sample warming and temperature equilibration prior to spectroscopic, chromatographic, or microbiological analysis
• Enzyme activity assays and protein denaturation studies requiring precise thermal ramping or hold profiles
• Material testing involving thermal aging of polymers, adhesives, or coatings per ASTM D573 and ISO 188
• Pharmaceutical dissolution media conditioning in USP Apparatus I/II setups
• Blood bank specimen thawing and serological reagent preparation under CLSI GP45-A4 guidelines
• Dental material curing simulations and biocompatibility pre-conditioning per ISO 10993-12
• Food safety testing—including pathogen enrichment media tempering and shelf-life stability trials per AOAC and ISO 6579 protocols

FAQ

What is the minimum operating temperature of the PURA 10?

The unit achieves stable operation down to +5 °C ambient (with no active cooling); it is not designed for refrigerated or sub-ambient applications.
Does the PURA 10 include a bath cover by default?

No—bath covers (transparent acrylic or stainless steel perforated) are optional accessories; part numbers vary by application and must be ordered separately.
Can the PURA 10 be used with corrosive or organic solvents?

Only water-based, non-oxidizing, non-halogenated solutions are recommended; prolonged exposure to acetone, chloroform, or strong acids will compromise gasket integrity and sensor accuracy.
Is the temperature sensor calibrated traceably to NIST standards?

Yes—the integrated Pt100 sensor is factory-calibrated with documented uncertainty ≤ ±0.05 °C at 37 °C; full calibration certificates (ISO/IEC 17025 accredited) are available upon request at time of order.
What maintenance is required over the product lifetime?

Julabo specifies “maintenance-free operation” under normal use; periodic inspection of the drain valve seal and visual verification of bath fluid clarity and level are the only recommended interventions.