Grant Optima™ T100 Series Circulating Water Bath

Overview

The Grant Optima™ T100 Series Circulating Water Bath is a precision-engineered, entry-level temperature control system designed for reliable, stable thermal regulation in academic, pharmaceutical, and industrial laboratory environments. Based on resistive heating and forced convection via an integrated centrifugal circulation pump, the T100 delivers consistent thermal performance across its full operating range of 0 °C to 100 °C. Its core architecture complies with DIN 12876 Class III requirements for laboratory thermostats, ensuring traceable stability (±0.05 °C at 70 °C) and uniformity (±0.1 °C at 70 °C) under standardized test conditions. Unlike open-loop analog systems, the T100 employs Intelligent Control Optimization™ (ICO), a proprietary adaptive PID algorithm that dynamically adjusts proportional, integral, and derivative gains in response to load changes, ambient fluctuations, and bath volume—enabling rapid recovery after sample insertion without overshoot or prolonged settling.

Key Features

• Single-knob + dual-button interface for intuitive operation—no menu navigation or firmware learning curve
• Optima™ digital controller with 4-digit LED display and 0.1 °C setpoint resolution
• Built-in circulation pump delivering up to 16 L/min flow rate and 210 mbar pressure—compatible with standard 6/11 mm tubing
• Dual safety architecture: fixed over-temperature cut-off and floating low-level sensor with visual/audible alarm
• Four user-definable temperature presets for rapid recall during routine assays or multi-step protocols
• Robust mechanical design with IP20-rated enclosure; CE-marked and compliant with IEC 61010-1 for laboratory electrical safety
• Modular compatibility with Grant’s ST-series (stainless steel) and P-series (polypropylene) baths—from compact 5 L benchtop units to 38 L process-capable tanks

Sample Compatibility & Compliance

The T100 supports a wide range of sample formats through optional accessories: VR-series vertical racks accommodate tubes from 0.5 mL microcentrifuge vials to 30 mm diameter culture vessels; QR-series quick-release racks offer modular flexibility for mixed tube sizes. Bath covers and polypropylene balls minimize evaporation and contamination above 60 °C. For sub-ambient operation, the system integrates seamlessly with Grant C1G (0–40 °C) or C2G (−15–40 °C) immersion chillers—each featuring refrigerant-based cooling, independent power supply, and DIN-compliant temperature logging capability. All configurations meet ISO/IEC 17025 documentation requirements when used with Labwise™ software and calibrated external probes (TXPEP/TXSEP). The unit satisfies GLP-relevant operational criteria including defined alarm thresholds, non-volatile setpoint memory, and hardware-enforced safety limits—making it suitable for regulated QC workflows under USP , ASTM E2877, and EU GMP Annex 15 guidelines.

Software & Data Management

While the T100 operates autonomously via front-panel controls, optional Labwise™ PC software enables advanced data governance: real-time temperature plotting, time-stamped export to CSV/Excel, programmable ramp-hold cycles (up to 30 steps per profile), and audit-trail generation compliant with FDA 21 CFR Part 11 requirements—including electronic signatures, user access levels, and immutable event logs. Labwise™ also supports remote monitoring via USB or RS232 interfaces (available on higher-tier TX150/TXF200 models); however, the T100 retains full standalone functionality without software dependency. External probe inputs allow distributed sensing—e.g., measuring actual sample temperature rather than bath fluid temperature—critical for validation studies requiring ISO 17025 traceability.

Applications

• Enzyme kinetics assays requiring precise 37 °C incubation with minimal thermal drift
• Calibration of thermometers, RTDs, and thermocouples against NIST-traceable references
• Viscosity measurements using rotational rheometers where bath temperature directly impacts shear rate accuracy
• Stability testing of pharmaceutical formulations per ICH Q1A(R2) guidelines
• Cell culture pre-warming and reagent equilibration prior to sterile processing
• Material testing of polymers and adhesives under controlled thermal cycling (when paired with chiller)
• Educational labs requiring robust, low-maintenance thermal platforms for undergraduate physics and chemistry curricula

FAQ

Can the T100 operate below ambient temperature?

No—the base T100 unit provides heating only. Sub-ambient operation requires integration with a Grant C1G or C2G immersion chiller, which connects via flexible coolant lines and is independently controlled.
What bath volumes are supported?

The T100 is compatible with ST-series stainless steel baths (5 L, 12 L, 18 L, 26 L, 38 L) and P-series polypropylene baths (5 L, 12 L, 18 L), each engineered for optimal thermal mass and flow dynamics.
Is the circulation pump sufficient for external jacketed reactors?

For standard lab-scale jackets (≤2 m tubing length, ≤10 m head), the built-in pump suffices. For longer loops or high-resistance manifolds, optional VTP1 or VTP2 high-pressure pumps provide up to 1650 mbar pressure and 12 L/min flow.
Does the T100 support GLP-compliant calibration records?

Yes—when used with Labwise™ software and certified external probes (TXSEP), it generates 21 CFR Part 11–compliant audit trails, including operator ID, timestamped events, and tamper-proof parameter change logs.
How is temperature uniformity verified?

Per DIN 12876, uniformity is measured using nine calibrated Pt100 sensors placed in a 3×3 grid at mid-depth; results are documented in the factory calibration certificate supplied with each unit.