OHAUS SHRC0719DG Reciprocating Shaker

Overview

The OHAUS SHRC0719DG Reciprocating Shaker is an engineered platform for precise, thermally controlled agitation in life science and bioengineering laboratories. Designed around a linear reciprocating motion (as opposed to orbital or rotary motion), it delivers consistent 19 mm stroke displacement along a single horizontal axis—ideal for applications requiring uniform shear profiles and minimal sample vortexing, such as suspension cell culture, protein solubilization, nucleic acid extraction, and reagent mixing under temperature-sensitive conditions. Its integrated refrigeration and heating system enables operation across a broad thermal envelope (−10 °C to +60 °C), supporting protocols ranging from cold lysis to elevated-temperature incubation. The shaker employs a brushless DC motor coupled with permanently lubricated ball bearings, eliminating mechanical wear and ensuring long-term speed stability and positional repeatability. All control logic is governed by an embedded microprocessor that continuously monitors and regulates oscillation velocity—even during load transitions—ensuring compliance with GLP/GMP workflows where parameter traceability and process consistency are critical.

Key Features

• Reciprocating motion with fixed 19 mm stroke length, optimized for low-shear, high-uniformity mixing of suspension cultures and viscous biological samples.
• Thermally stable chamber with independent Peltier-based cooling and resistive heating, maintaining setpoint accuracy within ±0.5 °C across the full −10 °C to +60 °C range (at ambient 23 °C, 50% RH).
• Microprocessor-controlled speed regulation: ±1% accuracy at speeds ≥100 rpm; ±1 rpm accuracy at speeds <100 rpm.
• Intelligent load compensation: Integrated load sensor detects imbalance or excessive mass and automatically reduces speed to a safe threshold to protect both samples and drive mechanism.
• RS232 serial interface compliant with standard laboratory data acquisition systems, enabling remote command execution, real-time parameter logging, and integration into LIMS environments.
• Programmable timer with dual-mode functionality—elapsed time display or countdown-to-shutdown—with non-volatile memory retaining last-used settings after power interruption.
• Touch-sensitive control panel with dual LED displays showing simultaneous speed (rpm) and remaining/elapsed time, supporting intuitive operation without menu navigation.
• Gradual acceleration ramping prevents splashing during startup; audible alarm with user-selectable mute function signals end-of-timer events.
• IP20-rated enclosure with fluid-guidance channels and sealed internal electronics to withstand non-condensing CO₂ environments and humidity up to 80% RH.

Sample Compatibility & Compliance

The SHRC0719DG accommodates standard multi-well plates (up to 384-well), flasks (Erlenmeyer, baffled, and tissue-culture treated), tubes (15 mL, 50 mL conical), and custom trays via universal clamping accessories. Its mechanical design complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets electromagnetic compatibility requirements per EN 61326-1:2013. Temperature and speed performance validation supports adherence to ASTM E2500-13 (verification of analytical instrument systems) and ISO/IEC 17025:2017 (competence of testing and calibration laboratories). When configured with audit-trail-enabled software (via RS232-linked host PC), the system satisfies FDA 21 CFR Part 11 requirements for electronic records and signatures in regulated biopharmaceutical environments.

Software & Data Management

While the SHRC0719DG operates autonomously via its onboard controller, its RS232 port enables bidirectional communication with external PCs running third-party or custom-developed LabVIEW™, Python (pySerial), or MATLAB® scripts. Data streams include real-time speed, actual temperature, elapsed time, and status flags (e.g., “alarm active”, “load imbalance detected”). Timestamped logs can be exported in CSV format for inclusion in electronic lab notebooks (ELNs) or quality documentation packages. Optional OHAUS-certified firmware updates—distributed via secure download portal—maintain alignment with evolving regulatory expectations for instrument qualification (IQ/OQ/PQ) and cybersecurity best practices (NIST SP 800-53 Rev. 5).

Applications

• Suspension mammalian and insect cell culture under controlled temperature and shear stress.
• Protein solubilization and refolding studies requiring reproducible linear agitation.
• Nucleic acid isolation from blood, tissue, or microbial pellets using phenol-chloroform or magnetic bead protocols.
• Antibody-antigen binding kinetics assays in microplate formats.
• Extraction of metabolites or secondary plant compounds under chilled or heated conditions.
• Preparation of homogeneous cell lysates prior to centrifugation or chromatography.
• Stability testing of biologics formulations across thermal stress gradients.

FAQ

Can the SHRC0719DG operate inside a CO₂ incubator?
Yes—it is rated for continuous use in non-condensing CO₂ atmospheres with humidity ≤80% RH and ambient temperatures between −10 °C and +60 °C.
Is speed calibration traceable to NIST standards?
The built-in speed calibration mode allows users to perform field verification against a certified tachometer; full calibration certificates are available upon request through OHAUS Service Centers.
Does the device support password-protected access control?
No—the local interface does not include user-level authentication, but all parameter changes made via RS232 can be logged and attributed when integrated with compliant host software.
What is the maximum recommended load capacity?
The platform supports up to 5 kg distributed evenly across the tray surface; exceeding this may trigger automatic speed reduction via the load sensor.
How often does the unit require preventive maintenance?
None—brushless DC motor and permanently lubricated bearings eliminate routine servicing; only periodic visual inspection of seals and airflow vents is advised per OHAUS Maintenance Guide Rev. 4.2.