Sartorius Practum124-1CN Analytical Balance (0.1 mg readability, 120 g capacity)

Overview

The Sartorius Practum124-1CN is a high-precision analytical balance engineered for routine laboratory applications requiring reliable 0.1 mg readability and robust performance under variable environmental conditions. Based on electromagnetic force compensation (EMFC) technology, it delivers traceable, temperature-stable measurements across its full 120 g capacity range. Designed and validated in accordance with international metrological standards—including ISO 9001, ISO/IEC 17025, and ASTM E898—the Practum124-1CN integrates German-engineered sensor architecture with locally adapted hardware for consistent accuracy in mainland China-based QC labs, academic teaching environments, and pharmaceutical R&D settings. Its compact footprint (360 × 216 × 320 mm), front-access leveling bubble, and oversized coarse leveling feet facilitate rapid installation and long-term stability on standard lab benches without dedicated vibration isolation.

Key Features

• EMFC Sensor Architecture: High-stability electromagnetic force compensation transducer ensures minimal drift over time and immunity to minor thermal fluctuations typical in non-climate-controlled laboratories.
• Integrated Draft Shield: Modular, three-sided glass draft shield with quick-release mechanism enables rapid access while maintaining measurement integrity during volatile solvent or low-mass powder weighing.
• Underhook Weighing: Built-in lower hook supports density determination, magnetic susceptibility testing, and buoyancy-corrected measurements using optional sinker kits—fully compatible with Sartorius Density Determination Kit DN 110.
• GLP/GMP Data Integrity Tools: Time-stamped data export via Mini-USB to Excel-compatible formats; built-in audit trail logging for calibration events, user logins, and parameter changes (compliant with FDA 21 CFR Part 11 when paired with validated software).
• Teaching & Supervised Operation Mode: Regulated Access Lock (RAL) allows instructors to disable menu navigation beyond basic weighing functions—ensuring student focus and preventing accidental configuration changes.
• Dynamic Weighing Modes: Includes Peak Hold (for transient samples such as live organisms or settling powders), Percent Deviation (relative to user-defined reference mass), Checkweighing (with configurable upper/lower tolerance bands), and Piece Counting (with automatic average piece weight calculation and statistical validation).

Sample Compatibility & Compliance

The Practum124-1CN accommodates diverse sample forms—including solids, granules, viscous suspensions, and low-surface-tension liquids—within its 90 mm diameter stainless steel pan and 209 mm vertical clearance. Its mechanical design meets IP42 ingress protection requirements for dust resistance and incidental moisture exposure. All firmware and operational logic adhere to ISO 14405-1:2016 (geometrical product specifications) and EU Directive 2014/32/EU (Measuring Instruments Directive). Factory calibration certificates are traceable to PTB (Physikalisch-Technische Bundesanstalt) standards and include uncertainty budgets per EURAMET cg-18 guidelines.

Software & Data Management

Data acquisition is natively supported through direct Mini-USB connection to Windows-based systems running Microsoft Excel® or third-party LIMS platforms. No proprietary drivers are required. The balance supports programmable output intervals (1–999 s), auto-zero tracking, and real-time serial streaming of stabilized readings. Internal memory retains up to 100 calibration logs and 500 weighing records with timestamps, operator IDs, and environmental metadata (if connected to optional temperature/humidity sensors). Optional Sartorius LabX Lite software provides enhanced reporting, multi-balance synchronization, and electronic signature workflows aligned with 21 CFR Part 11 Annex 11 requirements.

Applications

This balance serves critical roles in regulated and non-regulated environments: quantitative preparation of HPLC mobile phases and titrant solutions; gravimetric analysis of ash content per ASTM D3174; active pharmaceutical ingredient (API) dispensing in compounding pharmacies; educational stoichiometry labs; quality control of tablet mass uniformity per USP ; and density characterization of polymer pellets per ISO 1183-1. Its repeatability of ±0.1 mg at full load supports ICH Q5C stability-indicating assay validation protocols where mass-based normalization is required.

FAQ

Is external calibration required before first use?
Yes—Practum124-1CN ships de-calibrated per ISO 17025 requirements; users must perform initial external calibration using certified Class F1 or better weights prior to GLP-compliant operation.
Can the balance be used in a fume hood?
It is not recommended due to airflow-induced instability; however, if necessary, install with extended draft shield and allow ≥30 min thermal equilibration before use.
Does the USB interface support HID protocol for direct Excel input?
No—it operates as a virtual COM port; data must be captured via terminal emulation or Sartorius’ free Data Transfer Utility.
What is the maximum sample height allowable with the draft shield installed?
209 mm from pan surface to top of shield opening; removable base plate allows taller containers when shield is disengaged.
Is the internal clock battery-backed for uninterrupted timestamping during power loss?
Yes—the real-time clock retains date/time for ≥72 hours without main power, ensuring continuity in audit trails and regulatory reporting.