Adam Luna LTB Series Precision Balance

Overview

The Adam Luna LTB Series Precision Balance is an engineered solution for laboratories requiring consistent, traceable, and repeatable mass measurement across demanding routine and quality control workflows. Based on electromagnetic force restoration (EMFR) transduction technology, the LTB series delivers high-resolution weighing performance with 0.01 g readability and ≤0.02 g repeatability — meeting the metrological requirements for Class II and III applications per OIML R 76 and ISO/IEC 17025-accredited environments. Designed and manufactured in the United Kingdom, each unit undergoes factory calibration against certified reference masses traceable to UKAS and NIST standards. The balance operates within a controlled temperature range of 15–35 °C and achieves stabilization in under 2 seconds, enabling efficient throughput without compromising accuracy. Its robust mechanical architecture integrates a 304 stainless steel weighing pan and sealed keypad — features aligned with ISO 14644 cleanroom compatibility and GLP-compliant laboratory infrastructure.

Key Features

• Backlit monochrome LCD display with 24 mm high white numerals on black background — optimized for visual acuity under variable ambient lighting, including low-light or UV-sterilized lab settings.
• Color-coded tactile keys for rapid access to frequently used functions (e.g., tare, print, unit toggle), reducing operator error and training time.
• Integrated bubble level and adjustable leveling feet ensure mechanical alignment prior to operation — a prerequisite for achieving full specified linearity (±0.03 g) and minimizing eccentric load error.
• Under-mounted Kensington security slot enables physical anchoring to benchtops — supporting institutional asset protection policies and audit-ready inventory management.
• IP54-rated sealed keypad prevents ingress of particulates, solvents, and aqueous spills — extending service life in analytical, pharmaceutical, and food testing labs.
• Dual communication interfaces (RS-232 and USB) support direct integration with LIMS, ELN, and statistical process control (SPC) software — enabling automated data capture compliant with FDA 21 CFR Part 11 electronic record requirements.
• Configurable digital filtering algorithms suppress vibration-induced noise during dynamic or animal weighing — improving result reliability when measuring live specimens or unstable samples.
• Programmable auto-off timer conserves power without interrupting active sessions — particularly valuable in shared-core facilities where continuous uptime must be balanced with energy efficiency.

Sample Compatibility & Compliance

The Luna LTB accommodates diverse sample geometries and handling protocols via its 185 × 185 mm stainless steel pan — suitable for volumetric flasks, crucibles, petri dishes, and irregularly shaped solids. Its minimum weight threshold of 20 g ensures compliance with USP and EP 2.1.6 sensitivity criteria for quantitative analytical procedures. All internal calibration models (LTB-xxx2i) feature motorized, temperature-compensated internal weights that execute automatic recalibration upon power-up or user command — satisfying ISO 9001 clause 7.6 and ASTM E898 verification intervals. External calibration variants (LTB-xxx2e) accept standard Class M2 or better weights and retain full traceability documentation through built-in calibration log export. The device conforms to IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity), and its firmware supports audit trail generation for GLP/GMP audits.

Software & Data Management

Data output is fully configurable via RS-232 or USB virtual COM port, supporting ASCII-based protocols compatible with Microsoft Excel, LabChart, and custom Python/Matlab scripts. Timestamped printouts include date, time, operator ID (when paired with optional RFID reader), net/gross/tare values, and unit identifiers — fulfilling ALCOA+ data integrity principles. Firmware v2.1+ introduces CSV export mode with header rows and delimiter options, enabling seamless ingestion into QbD-driven quality systems. Optional Adam DU software provides real-time graphing, statistical analysis (mean, SD, CV%), and SPC charting — all with password-protected configuration changes and electronic signature capture for regulated environments.

Applications

• Pharmaceutical QC: Raw material assay, tablet weight uniformity (USP ), excipient blending verification.
• Chemical Synthesis: Stoichiometric reagent dispensing, catalyst loading, yield calculation.
• Food & Beverage: Portion control validation, nutritional labeling compliance (FDA 21 CFR 101), moisture loss tracking.
• Academic Research: Gravimetric titration setup, polymer synthesis monitoring, soil/sediment dry-mass determination.
• Materials Science: Density determination (with optional density kit), powder flow characterization via bulk/tap density ratios.

FAQ

What calibration certificates are supplied with the LTB series?
Each unit ships with a factory-issued calibration certificate referencing UKAS-traceable standards; optional UKAS-accredited calibration reports are available pre-installation.
Is the LTB compatible with FDA 21 CFR Part 11 requirements?
Yes — when used with Adam DU software and configured with user authentication, audit trails, and electronic signatures, it meets predicate rule requirements for electronic records and signatures.
Can the balance perform density measurements out-of-the-box?
Density functionality requires optional accessories (density kit, sinker, thermometer); firmware supports Archimedes’ principle calculations once hardware is installed.
Does the internal calibration system compensate for temperature drift?
Yes — the internal calibrator incorporates real-time thermal sensing and adjusts correction factors dynamically to maintain ±0.01 g accuracy across the full operating temperature range.
How is the minimum weight determined for GxP applications?
Minimum weight is calculated as 2000 × readability (20 g at 0.01 g), satisfying USP repeatability criterion and ensuring measurement uncertainty remains below 0.1% RSD at that threshold.