Microprocessor Controlled Density Gradient Filling System

Automated Density Gradient Preparation for Accurate Material Density Testing

The Ray-Ran Microprocessor Controlled Density Gradient Filling System provides a fast, accurate and repeatable method for creating density gradients in density gradient columns.

Designed for use with Ray-Ran 3 and 6 column density gradient systems, as well as other manufacturers’ density gradient columns, this advanced filling system removes the guesswork and manual adjustments traditionally associated with gradient preparation.

Ideal for polymer, plastics, elastomer and film testing laboratories, the system helps users achieve consistent density gradients for accurate material density measurement in accordance with ASTM D1505 and ISO 1183 standards.

Accurate and Repeatable Density Gradient Preparation

Creating a stable density gradient is essential for reliable density measurements. The Ray-Ran Microprocessor Controlled Filling System provides precise control over the filling process, significantly reducing preparation time while improving repeatability.

The automated system uses:

• Programmable stepper motors
• Precision peristaltic pumps
• Controlled liquid flow rates
• Digital density settings

This allows laboratories to produce accurate gradients with minimal operator intervention.

Fully Automated Gradient Filling

The system automatically controls the introduction of two miscible liquids to create the required density range.

Unlike traditional methods, the liquids do not need to be manually pre-mixed before filling. The system precisely combines the heavy and light density liquids during the filling process, improving accuracy and reducing preparation errors.

Programmable Settings and Data Storage

The intuitive touchscreen interface allows users to configure and save multiple filling routines for future testing.

Stored parameters include:

• Upper density value
• Lower density value
• Column volume
• Tube volume
• Buffer volumes
• Density measurement units

Users can select between:

• g/ml
• kg/m³

for flexible reporting and testing requirements.

Improved Density Gradient Stability

Optional buffer zones can be added to the top and bottom of the column to help slow gradient deterioration and maintain stable test conditions over longer periods.

This improves the reliability of density measurements and reduces the need for frequent gradient rebuilding.

Compact Laboratory Design

With a small footprint and simple touchscreen operation, the Ray-Ran Density Gradient Filling System is easy to integrate into existing laboratory workflows.

Its compact design makes it suitable for research facilities, quality control laboratories and material testing environments where space and efficiency are important.

Features & Benefits

• Automated density gradient column filling system
• Compatible with Ray-Ran and other density gradient columns
• Designed for ASTM D1505 and ISO 1183 density testing applications
• Faster gradient preparation with reduced manual adjustment
• Improved accuracy and repeatability
• Fully programmable filling parameters
• Touchscreen control interface
• Automatic density calculation
• Variable-speed pumping system
• No pre-mixing of liquids required
• Stores previous filling routines
• Adjustable top and bottom buffer volumes
• Selectable density units: g/ml or kg/m³
• Compact laboratory footprint
• Simple operation with minimal training required

Specifications

Included Accessories

• Mains power lead
• 5 metres of 4 mm tubing
• Weighted outlet tube end
• Spare pump tubes
• Connectors
• Product user manual
• CE Declaration Certificate
• 1-year return-to-base warranty

Applications

The Ray-Ran Microprocessor Controlled Density Gradient Filling System is suitable for:

• Polymer density testing
• Plastics research and development
• Elastomer testing
• Film material evaluation
• Quality control laboratories
• Material characterisation

Standards Compliance

The Ray-Ran Density Gradient Filling System supports density gradient testing methods including:

• ASTM D1505 – Density of Plastics by the Density-Gradient Technique
• ISO 1183 – Methods for Determining the Density of Non-Cellular Plastics