ChemTron Hydrom 070 Liquid Density Measurement Kit

Overview

The ChemTron Hydrom 070 Liquid Density Measurement Kit is a purpose-engineered, portable solution for precise liquid density, specific gravity (relative density), and derived concentration measurements—including Brix (sugar content) and alcohol by volume (ABV)—in laboratory, quality control, and field environments. Unlike electronic digital densimeters or oscillating U-tube instruments, the Hydrom 070 implements the classical hydrostatic principle based on Archimedes’ law, utilizing calibrated glass hydrometers immersed in temperature-controlled liquid samples. Its core architecture centers on thermal stability and optical clarity: the system integrates a high-precision transparent density bath capable of maintaining setpoint temperatures from 20 °C to 60 °C with ±0.1 °C uniformity across the immersion zone—critical for minimizing thermal convection errors and ensuring reproducible buoyancy-based readings. The kit is not a standalone instrument but a validated measurement *system*, where traceable calibration, thermal equilibrium, and operator technique are jointly optimized to meet international standard requirements for manual density assessment.

Key Features

• Integrated transparent density bath (JU3S-N-60 / 9162331D) constructed from borosilicate glass for optical clarity, chemical resistance, and dimensional stability under thermal cycling
• Temperature control range of 20–60 °C with PID-regulated heating and high-resolution digital display; bath design ensures minimal thermal gradient (<0.05 °C/mm) across sample column height
• Two calibrated glass hydrometers supplied—each individually certified to ISO/IEC 17025-accredited standards—with scale ranges selected per application (e.g., 0.700–1.000 g/cm³ for ethanol-water mixtures; 1.000–1.300 g/cm³ for sugar solutions)
• Two precision test cylinders (60 mL capacity) made from optical-grade glass, graduated to Class A tolerances per DIN EN ISO 4787, enabling accurate meniscus alignment and volume verification
• Modular, space-efficient footprint suitable for benchtop use in ISO 17025-certified QC labs or mobile deployment in production facilities and distilleries
• No external power required for hydrometer operation—measurement integrity relies solely on mechanical calibration, material density, and thermal equilibrium

Sample Compatibility & Compliance

The Hydrom 070 supports aqueous solutions, organic solvents, fuel blends, fermentation broths, syrups, and low-viscosity oils—provided samples are optically clear and free of suspended particulates that interfere with meniscus reading. Viscosity limits are defined by hydrometer sink time: samples up to ~50 mPa·s allow reliable stabilization within 60 seconds at 20 °C. All components comply with material safety directives (EU RoHS, REACH) and dimensional standards referenced in ASTM D1298 (Standard Test Method for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method), ISO 3675 (Crude petroleum and petroleum products — Laboratory determination of density — Hydrometer method), and ISO 12185 (Crude petroleum and petroleum products — Determination of density — Digital density meters). Calibration certificates traceable to PTB (Physikalisch-Technische Bundesanstalt) are available upon request.

Software & Data Management

As a manually operated analog measurement system, the Hydrom 070 does not incorporate embedded electronics or firmware. However, ChemTron provides optional digital workflow support via the DensCal Pro companion software (sold separately), which enables structured recording of ambient conditions, bath temperature logs, hydrometer serial numbers, calibration dates, and raw hydrometer readings. The software generates PDF reports compliant with GLP and GMP documentation requirements—including electronic signatures, audit trails per FDA 21 CFR Part 11, and automatic uncertainty propagation per GUM (Guide to the Expression of Uncertainty in Measurement). Raw data exports to CSV or LIMS-compatible XML formats ensure seamless integration into enterprise quality management systems.

Applications

• Alcoholic beverage production: ABV verification in beer, wine, and spirits per OIV and TTB methodologies
• Fermentation monitoring: Real-time tracking of sugar depletion and ethanol accumulation in bioreactors
• Pharmaceutical excipient QC: Density verification of glycerol, propylene glycol, and PEG solutions per USP
• Fuel blending control: Density-based certification of biodiesel (FAME) and diesel blends per EN 14214 and ASTM D6751
• Food & beverage R&D: Brix calibration curves for fruit juices, soft drinks, and dairy concentrates
• Educational laboratories: Teaching fundamental fluid statics, buoyancy, and metrological traceability principles

FAQ

Is the Hydrom 070 suitable for measuring opaque or viscous liquids?
No—hydrometer-based measurement requires visual meniscus detection; turbid, emulsified, or highly viscous samples (>100 mPa·s) impede proper floatation and reading stability.
Can the density bath be used independently of the hydrometers?
Yes—the JU3S-N-60 bath is a standalone temperature-controlled immersion unit compatible with other ASTM-compliant hydrometers, pycnometers, or capillary viscometers requiring thermal equilibration.
What calibration documentation is included with the kit?
Each hydrometer ships with an individual calibration certificate indicating reference temperature, certified scale points, expanded uncertainty (k=2), and traceability to national standards. Bath temperature sensor calibration is performed at three points (20 °C, 40 °C, 60 °C) and documented in the出厂 certificate.
Does ChemTron offer training or method validation support?
Yes—application-specific SOP development, on-site operator training, and IQ/OQ protocol execution are available through ChemTron’s global service network, aligned with ISO/IEC 17025 and GMP Annex 15 requirements.