Truelab DHP-9052 Temperature-Controlled Incubator

Overview

The Truelab DHP-9052 is a precision-engineered, microprocessor-controlled temperature incubator designed for stable, reproducible thermal environments in life science laboratories. It operates on the principle of active resistive heating combined with intelligent PID feedback control, ensuring minimal thermal overshoot and high long-term stability. Unlike humidified incubators, the DHP-9052 is optimized for dry-heat applications—ideal for microbial culture maintenance, enzyme activity assays, cell line passaging at ambient humidity, seed germination studies, and reagent pre-warming where moisture control is not required. Its compact 50 L working volume makes it especially suitable for teaching labs, QC microbiology units, and small-scale research groups requiring reliable, space-efficient thermal conditioning without humidity complexity.

Key Features

• High-contrast backlit LCD display showing real-time temperature, setpoint, elapsed time, and operational status—all visible at a glance without menu navigation.
• Dual-door structure with low-conductivity insulating gasket minimizes heat loss and maintains internal stability during frequent access; transparent tempered glass outer door enables visual monitoring without thermal disturbance.
• Electropolished 304 stainless steel interior with seamless radius corners eliminates crevices for microbial accumulation and supports ISO 14644-compliant cleaning protocols.
• Etched-film heating elements embedded directly into the inner chamber walls provide rapid thermal response and uniform surface heat distribution—eliminating hot spots common in coil-based systems.
• Independent mechanical over-temperature safety cutoff (non-software dependent) interrupts power if chamber temperature exceeds user-defined or factory-set limits, complying with IEC 61010-1 safety requirements for laboratory equipment.
• Adjustable stainless steel shelving system allows flexible load configuration; all shelves are removable and autoclavable.
• Front-accessible air inlet and rear-mounted exhaust ensure laminar airflow patterns that support consistent thermal homogeneity across the entire chamber volume.

Sample Compatibility & Compliance

The DHP-9052 accommodates standard Petri dishes (up to 150 mm), multi-well plates (6–96-well), test tubes (13–18 mm OD), flasks (Erlenmeyer and baffled), and custom sample carriers. Its dry-heat architecture avoids condensation-related contamination risks—critical for sterility assurance in GLP and GMP-aligned microbiological workflows. The unit meets CE marking requirements per EN 61010-1:2010 and conforms to electromagnetic compatibility standards EN 61326-1:2013. While not certified for medical device use under ISO 13485, its design aligns with ISO/IEC 17025 calibration traceability expectations when paired with external NIST-traceable thermistors. All electrical components comply with RoHS Directive 2011/65/EU.

Software & Data Management

The optional RS485 interface enables integration with third-party data loggers or laboratory information management systems (LIMS). When used with Truelab’s proprietary communication software (sold separately), users can configure continuous temperature logging at user-defined intervals (1 sec–60 min), export CSV-formatted datasets, and generate time-stamped audit trails compliant with FDA 21 CFR Part 11 Annex 11 requirements—provided local validation protocols are executed. The interface supports Modbus RTU protocol for interoperability with industrial SCADA platforms. No onboard storage is included; data persistence relies entirely on connected external devices.

Applications

• Maintenance of bacterial, fungal, and yeast stock cultures at defined sub-optimal temperatures (e.g., 4°C for short-term preservation or 30–37°C for routine propagation).
• Enzyme kinetics studies requiring precise thermal staging without water vapor interference.
• Accelerated stability testing of pharmaceutical excipients under dry-heat stress conditions per ICH Q1A(R2).
• Plant tissue culture pre-incubation steps prior to transfer to CO₂-regulated environments.
• Quality control of diagnostic reagents—including antibody conjugates and ELISA substrates—where humidity-induced hydrolysis must be excluded.
• Calibration verification of thermocouples and RTDs using fixed-point reference blocks placed inside the chamber.

FAQ

Is the DHP-9052 suitable for CO₂-sensitive cell cultures?
No. This is a dry-heat incubator with no gas regulation capability. For mammalian cell culture requiring CO₂ control, refer to Truelab’s CCO series CO₂ incubators.

Can humidity be added retroactively?
Not without hardware modification. The DHP series lacks integrated humidification components (e.g., steam generator, water reservoir, humidity sensor). Humidity-enabled models are designated as DHG or DHP-H variants and require separate ordering.

What is the recommended calibration frequency?
Per ISO/IEC 17025, annual calibration using a NIST-traceable reference thermometer is advised. Internal sensor drift should be verified quarterly using a calibrated handheld probe at three spatial points (center, top-left corner, bottom-right corner).

Does the unit include validation documentation?
Factory-installed IQ/OQ documentation is available upon request (additional fee applies). Users are responsible for site-specific PQ execution per their internal SOPs.

Is the RS485 interface opto-isolated?
Yes. Galvanic isolation protects connected PCs from ground-loop interference and transient voltage spikes commonly observed in shared lab power circuits.