Density Gradient Analyzer - ToronGradient™-D1505
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ToronGradient™-D1505 Density Gradient Analyzer is engineered for accurate density evaluation of solid plastics. It also enables rapid comparison of slight density variations between similar materials.
Applications
- Precise density analysis of high molecular weight materials
- Density assessment of natural and synthetic fibers
- Density testing of resin-based products
- Quality control for material density consistency
Standards
- ASTM D1505
- ISO 1183-1
- ISO 11542-2

Principle
A glass test tube is filled with two fully miscible liquids, creating a density gradient—lower at the top and higher at the bottom, varying in a linear pattern. A precisely calibrated glass float with a known density is placed into the column. The float settles and remains suspended at the point where the solution's density matches its own.
Density Gradient Analyzer - ToronGradient™-D1505 Features
- Density Gradient Analyzer utilizes a high-precision microcontroller for temperature regulation, with integrated heating and cooling systems. The stirring mechanism features an external drive with internal spray mixing, ensuring uniform temperature control within ±0.1℃ while minimizing vibrations in the temperature bath.
- The bath's inner chamber is constructed from high-transparency resin, offering excellent thermal insulation, clear visibility, and strong resistance to vibration.
- Compared to immersion or float-sink methods, the density gradient technique offers greater accuracy, simplified operation, and a broader measurement range.
| Model | ToronGradient-D1505 |
|---|---|
| Measurement range | 0.80g to 2.70g/cm³ |
| Accuracy | 0.0001 g/cm³ |
| Density gradient tube dimensions | ID 50mm, length 900mm |
| Graduation range | 0-850mm, resolution: 1mm |
| Number of test stations | 3 (or more) |
| Temperature range | 20℃ to 30℃ |
| Temperature accuracy | ±0.05℃ |
| Standard glass floats | 0.80g to 2.70g/cm³, accuracy 0.0001 g/cm³ |