MAYZUM MAYB124G High-Precision Liquid Density & Concentration Meter

Overview

The MAYZUM MAYB124G is a laboratory-grade benchtop liquid density and concentration meter engineered for precision, repeatability, and operational robustness in QC, R&D, and production environments. It operates on the fundamental principle of Archimedean buoyancy displacement—measuring the weight loss of a precisely calibrated sinker immersed in a liquid sample to determine its density with traceable accuracy. Unlike oscillating U-tube or vibrating fork densimeters, the MAYB124G employs a static immersion methodology that eliminates sensitivity to viscosity-induced damping effects, making it especially suitable for moderately viscous industrial fluids such as glycols, ethanol-water blends, brines, organic solvents, and acid/base solutions. Its design conforms to internationally recognized test protocols—including ASTM D1298 (standard test method for density of petroleum products via hydrometer), ASTM D4052 (density of liquids by digital density meter), and ISO 12185 (crude oil and petroleum products—determination of density by digital density meters)—while also supporting routine compliance with Chinese national standards GB/T 13531 (cosmetic emulsion density), GB/T 5526 (vegetable oil density), and GB/T 5009 (food analysis methods). The instrument delivers direct digital readouts of density (g/cm³), specific gravity (SG), concentration (% w/w), Brix (°Bx), Baumé (°Bé), and API gravity—calculated in real time without external conversion tables.

Key Features

• High-resolution density measurement with 0.0001 g/cm³ resolution and ±0.0002 g/cm³ repeatability under controlled lab conditions (23 ± 0.5 °C)
• Integrated temperature-compensated sensor system with built-in PT100 probe for automatic thermal correction across 15–40 °C operating range
• Stainless-steel sinker and corrosion-resistant sample pan compatible with aggressive media including HCl, NaOH, and acetone (with appropriate handling protocols)
• Dual-mode operation: manual immersion mode for standard calibration and automated sequence mode for batch testing with user-defined pass/fail thresholds
• Self-diagnostic startup routine verifying mechanical stability, zero drift, and sensor linearity prior to each measurement cycle
• Ergonomic benchtop housing with anti-vibration rubber feet and draft shield-compatible geometry for stable placement on analytical balance tables

Sample Compatibility & Compliance

The MAYB124G is validated for use with homogeneous, non-volatile, and low-to-moderate volatility liquids. It supports aqueous electrolyte solutions (e.g., NaCl, KCl, LiBr), alcohol–water mixtures, sugar syrups, antifreeze formulations, battery electrolytes, and pharmaceutical excipient solutions. Suspensions, emulsions, and particulate-laden samples require pre-filtration or centrifugation to ensure optical and hydrodynamic homogeneity. All measurement procedures align with GLP documentation requirements: full audit trail logging (time-stamped operator ID, sample ID, ambient T/P, calibration status) is enabled when connected to MAYZUM’s optional DataBridge™ PC interface. The device satisfies essential elements of FDA 21 CFR Part 11 for electronic records where paired with validated software and access-controlled user accounts.

Software & Data Management

While the MAYB124G functions autonomously with standalone display and keypad navigation, optional connectivity via RS-232 or USB enables integration into LIMS or ELN platforms. MAYZUM’s DensLink™ desktop application (Windows 10/11, 64-bit) provides CSV export, statistical process control (SPC) charting, multi-curve overlay, and customizable report templates compliant with ISO/IEC 17025 reporting clauses. Calibration history—including date, standard reference fluid (e.g., ultrapure water, certified n-decane), and drift compensation values—is retained for ≥10,000 cycles and exportable for internal QA review or external accreditation audits.

Applications

• Quality control of incoming raw materials (e.g., sulfuric acid concentration verification in electroplating baths)
• In-process monitoring of fermentation broths and distillation fractions in bioethanol production
• Concentration validation of cleaning agents, disinfectants, and etchants in semiconductor manufacturing
• Density-based assay of active pharmaceutical ingredients (APIs) in liquid dosage forms per USP <841>
• Batch release testing of food-grade syrups, vinegar, and flavored beverages against regulatory density limits
• Teaching laboratories for physical chemistry experiments on partial molar volume and solution thermodynamics

FAQ

Does the MAYB124G require daily recalibration?

No—routine calibration is recommended before first use of each shift or after ambient temperature shifts >2 °C. A two-point calibration (air + water at 20 °C or 25 °C) suffices for most applications.

Can it measure volatile solvents like acetone or ethanol without evaporation error?

Yes, provided measurements are completed within 15 seconds of immersion and the sample chamber is covered with the included acrylic lid to minimize vapor loss.

Is third-party certification available for metrological traceability?

Yes—MAYZUM offers optional NIST-traceable calibration certificates issued by CNAS-accredited labs (certificate includes uncertainty budget per GUM guidelines).

What maintenance is required beyond cleaning?

Annual verification of sinker mass integrity and temperature sensor accuracy is advised; no consumables or replaceable electronics modules are required over typical 8-year service life.

How does it compare to oscillating-tube densimeters for high-accuracy work?

Oscillating-tube instruments offer higher resolution (<0.00001 g/cm³) but are more sensitive to air bubbles, viscosity, and particulates. The MAYB124G prioritizes ruggedness, ease of validation, and broad chemical compatibility over ultra-high resolution—making it optimal for regulated industrial labs where reproducibility and compliance outweigh theoretical precision ceilings.