Solid and Liquid Densimeter
Precision benchtop densimeter for solid and liquid samples using Archimedes principle. Measures 0.005-300g with 0.001g/cm³ density resolution, ~5-second measurement time, mixed-material percentage analysis, and automatic temperature compensation. Includes RS-232C interface.
Louise Corscadden, PhD
Neuroscience · ConductScience
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The Biobase Solid and Liquid Densimeter (BK-DME300D) is a versatile benchtop analytical instrument for accurate density measurement of both solid and liquid materials. Suitable for quality management, cost control, new formula research, and materials science, the BK-DME300D handles any form of solid as well as most liquids, including volatile, corrosive, strong acid, and strong alkali liquids (with optional DE-20B anti-corrosive accessory).
Solid Mode
Uses the Archimedes principle general solid test method. The unibody injection-formed specific gravity measurement frame (176x105x111mm) and professional measuring tank (169x98x83mm) ensure reproducible results. A mixed-material percentage function automatically calculates the main material proportion in two-component composites, with user-configurable density reference values.
Liquid Mode
Uses the Archimedes principle displacement method with a stainless steel specific gravity measuring frame. Dynamic memory mode stores weight data, and results are displayed as density values. Calibrated using distilled water testing.
Key Features
- Automatic zero tracking, buzzer warning, and overload warning
- Actual water temperature compensation
- Solution compensation for non-water measurement media
- Mixed-material percentage analysis for two-component composites
- Auto correction and auto detection calibration
- RS-232C interface included
- Density range: 0.001-99.999 g/cm³, resolution: 0.001 g/cm³
- Measurement time: approximately 5 seconds
Standard Accessories
Common: tweezer, thermometer, 100G weight, windshield, power transformer. Solid use: tank, testing board, particle measuring assembly, floating body measuring assembly. Liquid use: measuring plate, measuring frame, DE-20A standard liquid measuring assembly.
How It Works
The densimeter operates on Archimedes principle, which states that the buoyant force on an immersed object equals the weight of the displaced fluid. The instrument measures the weight of a sample in air and then in a reference liquid (typically distilled water) to calculate density through the displacement method. The unibody injection-formed measuring frame ensures precise positioning and eliminates measurement errors from frame deformation.
During operation, the sample is first weighed in air using the integrated balance, then submerged in the reference liquid for a second weighing. The instrument automatically calculates density using the formula: ρ = (Wa × ρl) / (Wa - Wl), where Wa is weight in air, Wl is weight in liquid, and ρl is the density of the reference liquid. The dynamic memory system stores measurement parameters and allows for customizable density value settings for different material types.
Automatic calibration and detection functions ensure measurement accuracy by continuously monitoring system performance and correcting for environmental variables such as temperature fluctuations and air buoyancy effects.
Features & Benefits
Automation Level
- Semi-automated
Measuring Time
- About 5s
Memory Mode
- Dynamic memory
Result Display
- Density value
Result Testing Method
- Distilled water testing
Calibration Mode
- Auto correction, auto detection
Optional Accessories
- DE-40 printer, DE-20B anti corrosive liquid measuring assembly
Capacity
- 0.005~300g
Density Resolution
- 0.001g/cm³
Density Range
- 0.001~99.999g/cm³
Solid Mode Measuring Principle
- Archimedes principle general solid test method
Specific Gravity Measuring Frame
- Unibody injection forming professional specific gravity measurement frame; Size: 176×105×111mm (L×W×H)
Measuring Tank
- Unibody injection forming transparent professional measuring tank; Size: 169×98×83mm (L×W×H)
Mixed Material Percentage
- Automatically reads percentage of main material in two-component composites; adjustable density reference values; displays density and percentage of main material
Liquid Mode Measuring Principle
- Archimedes principle displacement method
Weight Value Data Storage
- 1 group
Liquid Specific Gravity Frame
- Stainless steel specific gravity measuring frame
Standard Accessories
- Common: Tweezer, thermometer, 100G weight, windshield, power transformer. Solid: Tank, testing board, particle measuring assembly, floating body measuring assembly. Liquid: Measuring plate, measuring frame, DE-20A standard liquid measuring assembly
Power/Voltage
- AC 100~240V, 50/60Hz
External Size (W×D×H)
- 195×230×197mm
Package Size (W×D×H)
- 440×180×345mm
Net Weight
- 1.78kg
Gross Weight
- 4.5kg
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Environmental Monitoring
- Food Science
- Industrial Hygiene
- Materials Science
- Pharmaceutical QC
Weight
- 1.78 kg
Dimensions
- L: 9.3 mm
- W: 15.3 mm
- H: 10.7 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Measurement Time | Approximately 5 seconds per measurement | Entry-level models often require 15-30 seconds or longer | Enables higher sample throughput for quality control and research applications requiring rapid analysis |
| Sample Capacity Range | 0.005 to 300 grams | Many models have narrower ranges or require different configurations for small vs. large samples | Single instrument handles diverse sample sizes without accessory changes or reconfiguration |
| Measuring Frame Design | Unibody injection-formed professional specific gravity measurement frame | Basic models may use assembled frames prone to alignment errors | Eliminates measurement errors from frame deformation and ensures consistent positioning accuracy |
| Calibration System | Auto-correction and auto-detection with distilled water testing | Manual calibration procedures requiring operator intervention | Reduces operator variability and maintains measurement accuracy with minimal manual oversight |
| Memory Functions | Dynamic memory with configurable density settings for main and subordinate materials | Basic models often lack programmable settings | Enables protocol standardization and consistent measurement parameters across different sample types |
| Power Compatibility | AC100-240V, 50/60Hz universal power supply | Some models require specific voltage configurations | Provides global laboratory compatibility without voltage converters or regional modifications |
This densimeter combines rapid 5-second measurements with a broad 0.005-300g capacity range and automatic calibration functions. The unibody measuring frame design and dynamic memory capabilities provide enhanced precision and protocol flexibility compared to basic density measurement instruments.
Practical Tips
Perform automatic calibration using fresh distilled water at room temperature before each measurement session.
Why: Temperature-stable reference liquid ensures measurement accuracy and proper baseline establishment.
Allow samples to equilibrate to room temperature before measurement and remove air bubbles from liquid samples.
Why: Temperature differences and trapped air can significantly affect density calculations and measurement repeatability.
Clean the measuring frame thoroughly after each sample type change and inspect for residue buildup.
Why: Cross-contamination and residue can introduce measurement errors and affect the accuracy of subsequent samples.
Configure material-specific density settings in the dynamic memory for consistent protocol execution.
Why: Standardized settings eliminate operator variability and enable reproducible measurements across different users and time periods.
Verify proper frame alignment and stability if measurements show unusual variability or drift.
Why: Frame misalignment or mechanical instability can introduce systematic errors affecting measurement precision.
Use the optional anti-corrosive assembly when measuring reactive or corrosive liquids.
Why: Standard components may be damaged by aggressive chemicals, potentially compromising safety and measurement accuracy.
Document measurement conditions including temperature and sample preparation methods for traceability.
Why: Environmental factors affect density measurements and proper documentation enables result interpretation and protocol optimization.
Verify system performance using certified reference materials periodically as part of quality assurance procedures.
Setup Guide
What’s in the Box
- Solid and Liquid Densimeter main unit
- Unibody injection-formed measuring frame
- AC power cord (100-240V)
- User manual and calibration instructions (typical)
- Sample positioning accessories (typical)
- Calibration verification weights (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship, with technical support for calibration procedures and measurement protocols.
Compliance
What is the measurement precision for samples at different weight ranges?
The instrument accommodates samples from 0.005 to 300 grams using Archimedes principle displacement method. For specific precision specifications across this weight range, consult the product datasheet as precision may vary with sample size.
How does the automatic calibration function ensure measurement accuracy?
The system uses distilled water testing as the reference standard with auto-correction and auto-detection capabilities. The calibration routine monitors system performance and compensates for environmental variables affecting measurement accuracy.
Can the instrument measure density of corrosive or reactive liquids?
The system offers an optional DE-20B anti-corrosive liquid measuring assembly accessory for handling corrosive materials. Standard configuration is designed for non-corrosive samples using distilled water as reference.
What data output options are available for laboratory information systems?
The instrument displays density values and percentage of main material composition. An optional DE-40 printer accessory is available for hard copy documentation. For digital data connectivity options, consult the product datasheet.
How does the dynamic memory function work with different sample protocols?
The dynamic memory mode stores measurement parameters and allows free setting of density values for main and subordinate materials, enabling protocol customization for different sample types and research applications.
What maintenance procedures are required for the measuring frame?
The unibody injection-formed frame requires regular cleaning and verification of alignment. Specific maintenance intervals and procedures should be followed according to the user manual to maintain measurement precision.
How does sample temperature affect density measurements?
Temperature variations can affect both sample and reference liquid density, impacting measurement accuracy. The automatic detection system may compensate for temperature effects, but consult the product datasheet for specific temperature operating ranges and correction procedures.
What is the difference between measuring solids versus liquids with this instrument?
Both solid and liquid samples use the same Archimedes principle displacement method, with the measuring frame accommodating different sample formats. Sample preparation and positioning procedures may differ between solid and liquid samples as detailed in the user manual.
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