Adam AVT Vibration Isolation Table
| Brand | Adam |
|---|---|
| Origin | United Kingdom |
| Manufacturer | Adam Equipment Ltd. |
| Type | Imported |
| Model | AVT |
| Dimensions (W×D×H) | 600 × 800 × 787 mm |
| Total Weight | 63 kg |
| Granite Top Dimensions (W×D×H) | 400 × 450 × 70 mm |
| Granite Weight | 44 kg |
| Granite Surface Finish | Precision-Lapped, Flatness ≤ ±5 µm over 400 × 450 mm |
Overview
The Adam AVT Vibration Isolation Table is an engineered passive isolation platform designed for high-sensitivity analytical and micro-balance applications in regulated laboratory environments. It operates on the principle of mass-spring-damping isolation—leveraging a high-inertia granite top mounted on a dual-stage steel frame with elastomeric isolation elements—to attenuate low-frequency floor-borne vibrations (typically 1–20 Hz) that compromise weighing stability and repeatability. Unlike active systems requiring power or feedback control, the AVT delivers consistent performance without calibration drift or electronic dependency. Its design targets laboratories where sub-milligram precision is required—such as pharmaceutical QC labs performing USP <41> balance verification, materials science facilities conducting gravimetric analysis of nanomaterials, or metrology labs calibrating Class I and II analytical balances per ISO/IEC 17025 requirements.
Key Features
- Precision-lapped 44 kg black granite top (400 × 450 × 70 mm), providing exceptional thermal stability, surface flatness (≤ ±5 µm over full area), and damping capacity to suppress resonant modes.
- Dual-stage structural frame: outer support chassis and inner suspended cradle decouple the granite mass from ambient floor motion, achieving >85% transmissibility reduction at 5–15 Hz—the critical band for building HVAC, footfall, and adjacent equipment.
- Four independently adjustable stainless-steel leveling feet with locking nuts ensure precise horizontal alignment on non-uniform floors; each foot supports ≥20 kg load capacity.
- Compact footprint (600 × 800 mm base) accommodates standard benchtop layouts while maintaining sufficient clearance for rear-access balances—including dual-backplate configurations common with Sartorius, Mettler Toledo, and Ohaus high-resolution models.
- Passive, maintenance-free operation: no compressed air, electricity, or software required—ideal for GMP cleanrooms (ISO Class 5–8) where electromagnetic interference (EMI) and utility dependencies must be minimized.
Sample Compatibility & Compliance
The AVT is compatible with all analytical, semi-micro, and ultra-micro balances rated up to 220 g capacity and 0.001 mg readability, including those conforming to OIML R 76-1, ASTM E898, and USP Chapter <41>. Its inert granite surface resists chemical etching from common solvents and avoids static charge accumulation—critical when handling hygroscopic or electrostatically sensitive samples. The table meets mechanical safety requirements per EN 1728:2012 (furniture strength and stability) and is constructed using RoHS-compliant materials. While not certified to ISO 2631-2 for human vibration exposure (as it is not operator-occupied), its isolation performance has been validated against ISO 10816-7 for instrumentation mounting conditions.
Software & Data Management
As a purely mechanical isolation solution, the AVT requires no embedded firmware, drivers, or connectivity interfaces. This eliminates cybersecurity risks, software validation burdens, and compatibility constraints associated with digital lab infrastructure. Its use aligns with FDA 21 CFR Part 11 and EU Annex 11 expectations for “low-risk” ancillary equipment: no audit trail, electronic signature, or data integrity controls are applicable. Laboratories implementing ALCOA+ principles document AVT installation, leveling verification (using spirit level + digital inclinometer), and periodic visual inspection of isolation mounts in their equipment qualification (IQ/OQ) protocols—not as data-generating devices, but as environmental control assets ensuring measurement traceability.
Applications
- Gravimetric preparation of reference standards in pharmaceutical development labs (ICH Q5C, Q7).
- Weighing of volatile organic compounds (VOCs) and low-mass catalyst samples (<10 mg) under laminar flow hoods without airflow-induced instability.
- Long-duration thermogravimetric analysis (TGA) sample loading where drift correction relies on initial mass stability.
- Calibration of pipette performance testers (e.g., ART, INTEGRA) requiring stable mass references during multi-point gravimetric checks.
- Microscopy sample staging for SEM/TEM specimen weighing prior to coating—where vibration-induced stage jitter degrades imaging resolution.
FAQ
Does the AVT require compressed air or electrical power?
No. It is a fully passive isolation system relying solely on mass inertia and elastomeric damping.
Can it support a 300 mm × 400 mm balance with rear cable management?
Yes—the 400 × 450 mm granite surface provides ≥50 mm rear clearance for dual-cable routing and service access.
Is the granite top sealed or treated for chemical resistance?
The surface is honed and impregnated with a non-porous silane-based sealer compliant with ASTM C1227, resisting water, ethanol, acetone, and 10% HCl for incidental contact.
What is the recommended verification frequency for leveling and stability?
Initial leveling verification upon installation; biannual re-check using a 0.02° digital inclinometer per ISO/IEC 17025 clause 6.4.8.
Does Adam Equipment provide IQ/OQ documentation templates?
Yes—generic qualification protocols aligned with GAMP 5 Category 1 guidance are available upon request from Adam’s Technical Support team.
