Grant PMR-30 Digital 3D Platform Shaker

Overview

The Grant PMR-30 Digital 3D Platform Shaker is a compact, precision-engineered laboratory shaker designed for consistent, low-shear sample agitation in life science and bioengineering applications. Unlike orbital or reciprocating shakers, the PMR-30 employs a fixed-angle 3D rocking motion—oscillating side-to-side along a precisely calibrated 7° tilt plane—to induce gentle yet effective mixing within sealed or open vessels. This motion profile minimizes foaming, reduces shear stress on sensitive biological samples (e.g., cells, antibodies, nucleic acid complexes), and ensures uniform reagent contact across heterogeneous surfaces—critical for blotting, hybridization, and immunoprecipitation workflows. Engineered for integration into controlled environments, its 12 V DC power architecture enables safe operation inside refrigerated incubators and CO₂ chambers via low-profile cable routing through standard door gaskets.

Key Features

• Gentle, reproducible 3D rocking motion at a fixed 7° tilt angle—optimized for low-shear mixing of fragile biomolecules and adherent cell monolayers.
• Digital speed control (7.5–30 rpm) with mechanical stability ensured by a brushless DC motor, delivering minimal vibration and acoustic noise (<45 dB(A) at 1 m).
• Integrated 4-digit LED timer with programmable range from 1 minute to 24 hours; auto-shutoff function guarantees protocol fidelity and eliminates manual intervention.
• Compact footprint (210 × 210 mm platform) and low-profile chassis (height < 80 mm) maximize benchtop or incubator space utilization without compromising structural rigidity.
• Non-slip PDM mat included as standard—prevents lateral displacement of flasks, Petri dishes, and microcentrifuge tubes during extended runs.
• 12 V DC input enhances electrical safety in humid or temperature-controlled enclosures; compatible with standard lab-grade DC power supplies meeting IEC 61000-4-5 surge immunity requirements.

Sample Compatibility & Compliance

The PMR-30 accommodates a broad range of vessel formats including glass or plastic culture flasks (up to 250 mL), multi-well plates (6–96-well), Petri dishes (up to 150 mm), and microcentrifuge tubes (0.2–15 mL). Its uniform motion profile supports protocols aligned with ISO 15190:2020 (laboratory safety) and ASTM D7281–17 (standard practice for evaluating mixing efficiency in immunoassay preparation). While not certified for GMP manufacturing, the device meets essential design criteria for GLP-compliant research environments—including traceable timer functionality, stable rotational output under variable load conditions, and absence of electromagnetic interference per CISPR 11 Class B limits.

Software & Data Management

The PMR-30 operates as a standalone instrument with no embedded firmware or network interface. All operational parameters are set manually via front-panel rotary encoder and confirmed visually on the high-contrast LED display. This analog-digital hybrid architecture eliminates software validation requirements under FDA 21 CFR Part 11 while preserving experimental integrity: timer values are retained across power cycles, and speed calibration remains unaffected by ambient temperature fluctuations (±0.2 rpm stability over 4–40 °C). For laboratories requiring audit trails, external logging can be implemented using time-stamped video capture or integrated environmental monitoring systems (e.g., Vaisala viewLinc).

Applications

• Gel staining and destaining (Coomassie, silver, SYPRO Ruby)—enhances dye penetration while minimizing gel distortion.
• Western and Southern blotting—ensures uniform antibody or probe binding across nitrocellulose or PVDF membranes.
• Immunoprecipitation and chromatin immunoprecipitation (ChIP)—maintains complex integrity during wash steps.
• Nucleic acid hybridization (Northern/Southern blots, FISH)—improves probe accessibility without denaturation.
• Cell-based assays involving adherent cultures—facilitates medium exchange and reagent addition without detachment.
• Antibody labeling and conjugation reactions—promotes stoichiometric interaction in low-volume buffers.

FAQ

Is the PMR-30 suitable for use inside a CO₂ incubator?
Yes—the 12 V DC power input, absence of internal heat-generating components, and operating temperature range of 4–40 °C make it fully compatible with standard humidified CO₂ incubators.
Can I mount microtiter plates directly on the platform?
Yes; the flat, textured surface and included PDM mat provide sufficient grip for standard 96-well plates. For enhanced stability during high-rpm runs, the optional PTP-26 adapter is recommended for tube-based workflows.
Does the timer retain settings after power interruption?
Yes—the timer memory is non-volatile; elapsed or remaining time is preserved upon reconnection to power.
What maintenance is required?
No scheduled maintenance is specified; periodic inspection of the PDM mat for wear and cleaning of the platform surface with 70% ethanol is sufficient for long-term reliability.
Is calibration documentation available?
Grant provides factory calibration certificates for speed and timer accuracy upon request, traceable to UKAS-accredited standards (ISO/IEC 17025).