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Density Check - PC

PC-controlled-Electronic Densimeter for automatic evaluation of the density, % Mass Variation (DM) and % Volume Variation (DV) of compact and cellular (non absorbent) materials

Standards the instrument complies with:
Cellular Products
Standard Specification for Flexible Cellular Materials—Sponge or Expanded RubberASTM D1056Standard Test Methods for Flexible Cellular Materials—Slab, Bonded, and Molded Urethane FoamsASTM D3574Flexible cellular polymeric materials -- Sponge and expanded cellular rubber products -- Specification -- Part 1: SheetingISO 6916-1Flexible cellular polymeric materials – Sponge and expanded cellular rubber products – Specification – Part 2: Mouldings and extrusionsISO 6916-2
Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by DisplacementASTM D792Plastics -- Methods for determining the density of non-cellular plastics -- Part 1: Immersion method, liquid pyknometer method and titration methodISO 1183-1
Rubber & Elastomers
Rubber, vulcanized or thermoplastic -- Determination of the effect of liquidsISO 1817Rubber, vulcanized or thermoplastic -- Determination of densityISO 2781Rubber, vulcanized or thermoplastic -- Determination of abrasion resistance using a rotating cylindrical drum deviceISO 4649Standard Test Methods for Rubber Products—Chemical AnalysisASTM D297Standard Test Method for Rubber Property—Effect of LiquidsASTM D471Elastomeric seals - Materials requirements for pipe joint seals used in water and drainage applications- Part 1: Vulcanized rubberEN 681-1Standard Test Method for Rubber Property—Abrasion Resistance (Rotary Drum Abrader)ASTM D5963
Rubber Hoses
Small Craft - Fire resistant fuel hoses ISO 7840

Gibitre Density Check
is currently installed in
35 countries
Request the List of top References

Tests on different products performed automatically 
The instrument allows to measure the density of compact products, expanded (non-absorbent) products, pellets and liquids through the hydrostatic method.

Running a test is quick and easy:
• Enter the list of tests to be carried out (possibly with barcode reader)
• Apply the specimen to the sample holder
• Attach the sample holder to the magnetic clamp
Done !
The instrument:
• Waits for the specimen to be applied
• Measures the weight of the sample
• Raises the glass containing the comparison liquid
• Measures the temperature of the comparison liquid and corrects its density accordingly
• Measures the volume of the sample
• Calculates density
• Lowers the glass
• Compares the result with the tolerance limits
• Saves the result in the SQL database
... and is ready for the next test
All in about 10 seconds.
Key Features 
• Top quality scale with 0.001g resolution (optionally 0.0001g)
• Magnetic sample holder for quick sample replacement
• Thermal sensor for the reading of the temperature of the reference liquid and automatic density adjustment
• Motor controlled lifting system, which moves up and down a beaker during the automatic execution of the test
• Automatic calculation of Density and of % Mass Variation and % Volume Variation after aging treatment of samples
• Comparison of results with tolerance limits and statistic analysis
• Storage of data and curves in standard Gibitre SQL database
• Full license of Datagest_10 software for complete management of Gibitre SQL Database
Reading of the temperature of test liquid 
The calibrated temperature probe inside the beaker measures the temperature of the reference liquids.
The software corrects the density of the test liquids based on the temperature and uses the correct value for the measurements.
Each result is saved together with the temperature measurement and the real density of the comparison liquid.
Seasonal variations in density measurement with changing laboratory temperature are just a memory!
DensityCheck_10 Software 
The software enables the complete automatic performance of the test, the comparison of the results with the tolerance limits set for the product and the storage of the results in standard Gibitre database with SQL format. The software permits to store Mass and Volume results and to compare the results with the ones obtained using the same samples after aging test in order to calculate Mass and Volume Percentage variation (DM%, DV%)according to ISO 1817 or ASTM D 471 standards.
The reference liquid for volume calculation can be selected (default liquids are distilled water or ethyl alcohol). The density of the reference liquid is corrected according to the temperature of the lab entered in the program to ensure accurate volume calculation.
Statistics: X-chart, Gaussian Curve, Max, Min, Mean, Std. Dev, Cp and Cpk for the ongoing test or for a selection of stored results are automatically calculated.
The test report for the test performed or for a selection of stored results includes test identification, tolerance limits, statistic, company logo, digital signature of the user and a legend with the description of the results calculated.
The software is connected to the Gibitre Standard SQL database.

Read more about DensityCheck_10 software

Measure of Mass and Volume Percentage Variation 
Aging tests on Rubber products are performed according to international standards (ISO 1817, ASTM D471, etc) to evaluate the capability of the product to perform correctly in use conditions.
The aim of this test is to measure the Mass and Volume Percentage variation after the aging of the samples and to compare the results with the expected tolerance limits.
The instrument performs this operation automatically
In order to measure the Mass and Volume variation of the samples, you need to:
● Prepare at least 3 samples
● Perform a test with the instrument on the samples before aging
● Age the samples at the requested aging conditions
● Select the identification of the tests originally made on the samples from the List of Tests with Pending Treatments
● Repeat the test on the samples
The software will do the rest:
● Calculates the Percentage Mass and Volume variation
● Compares the results with tolerance limits for the product and for the treatment selected
● Stores the results to the SQL Database
Tolerance Limits 
The Datagest program allows you to define specific tolerance limits for each Product, Customer, Test Procedure and Aging Treatment.
For each result to be calculated, tolerance limits and alarm limits can be defined.
The comparison between the results and the tolerance limits is carried out automatically at the end of each test: the test results are colored (Green, Yellow or Red) based on the outcome of the comparison with the limits.
The outcome of the check is saved in the database together with the results.

Density tests on Rubber and soft products 
The test is carried out using a needle applied to a magnetic support.
• The needle is inserted into the specimen
• The magnetic support allows you to fix it to the scale.

Normally the reference liquids used are distilled water.
Density Tests of Plastic and Rigid products 
The test is carried out using a clamp support designed to minimize the formation of bubbles during immersion in the liquid.
• The piece to be measured is applied to the support
• The holder is mounted on the scale.

The reference liquids used can be distilled water or ethyl alcohol.

Density Tests of Expanded Products 
The test is carried out using a steel needle which avoids the upward displacement of the specimen during the immersion in the liquid with comparison.
• The steel needle is inserted into the specimen
• The magnetic holder is mounted on the scale.

The reference liquids used can be distilled water or ethyl alcohol.
The test can be performed if the product is not absorbent (closed cell expanded products)

Density Tests of Plastic Pellets 
The test is carried out using a standard filter that allows you to easily insert the product and minimize the formation of bubbles during immersion in the liquid.
• The pellets to be measured are inserted into the support
• The holder is mounted on the scale.

The reference liquids to be used is ethyl alcohol.
Density Tests of Liquids 
The test is performed using a standard volume medium.
• The liquid to be measured is poured into a glass
• The volume of the support is memorized on first use through the automatic tare procedure.
• The holder is attached to the scale via the magnetic holder.
• Pressing start the measurement cycle is carried out automatically.
Language Selection 
All the programs produced by Gibitre are multi-language and allow the operator to select the language of use.
The test report can be produced in the desired language regardless of the language of use of the program.
The languages available at the moment are: Italian, English, German, French, Portuguese, Russian, Chinese, Japanese, Turkish, Polish, Czech

Management of Test Results 
The results and test curves of all the tests carried out are saved in the Gibitre SQL database and are available through the Datagest program.

Datagest is the Laboratory Information Management System (LIMS) which is always installed in combination with all Gibitre instrument-control programs.
The program is the collector for all the test result produced with the instruments connected and permits to manage the common Archives used by the instruments (Product List, Customer List, Tolerance limits, Order List, etc)

Smart Test Identification 
One of the key characteristics to make an instrument functional is the simplicity in identifying the tests to be carried out.
The new Gibitre release 10 programs allow you to:
• Reduce the time for insertion
• Do not make identification errors
• Identify the correct test procedure for the product
• Have a complete traceability of the archived Results.

Industry 4.0 integration 
The instrument and the software have been specifically developed to optimize integration with other environments.
The database in SQL format and the Gibitre_Company_Connect program allows you synchronize your company management software with Gibitre database and to speed up the identification of the tests and to use bar-code readers or similar devices.

Hardware requirements 
• Programs can be installed on standard PCs with WINDOWS 7, 8 or 10 OPERATING SYSTEMS.
• The CONNECTION between the instruments and the PC is made using the USB CABLE supplied with the instrument.
• The programs are COMPATIBLE WITH ANTIVIRUS, and other programs installed on the PC.

Development and production 
The instrument is totally developed and produced in the plant of Gibitre Instruments in Italy.
All the mechanical parts are produced in the company workshop using modern CNC machines.
Components and sensors from well-known brands are selected in order to ensure the maximum reliability in the measures
Internal trained personnel takes care of all the production stages: assembly, start-up, calibration, packing, shipment and installation.

Technical specifications
Reference Standards
Standards the instrument complies with:  ASTM D1056; ASTM D3574; ISO 6916-1; ISO 6916-2; ASTM D792; ISO 1183-1; ISO 1817; ISO 2781; ISO 4649; ASTM D297; ASTM D471; EN 681-1; ASTM D5963; ISO 7840;  
Instrument Characteristics
Measurable density  The instrument can be set for measuring the density of rubber, rigid materials, foam (non absorbent), pellets, liquids. The instrument enables automatic measurements to be carried out even for samples with density of less than 1 g/cm3.  Balance full scale  Scale with 0,001 g resolution: 450 g
Scale with 0,0001 g resolution: 100 g 
Balance sensitivity  ±0.001 g (±0.0001 g optional)  Calibration  Calibration certificate with traceability to primary standards 
Cycle control  After the application of the sample, the test cycle, including the displacement of the backer with the reference liquid, is fully automatic.  Numerical test data  Mass, volume and density (original state and after aging treatment)
% mass Variation and % Volume variation 
Selection of the reference liquid  The kind of reference liquid and the density according to the temperature of the lab can be selected.  Data analysis  Mean, Std. dev., max, min, Cp, Cpk, X-Chart  Software usage Languages  Italian, English, French, Spanish, German, Portuguese, Russian, Chinese, Japanese, Turkish, Polish, Czech. 
Safety Devices
Labelling  CE Labelling 
Calibration  Calibration Report conforming to ISO 2781 with traceability to primary standards 
Technical specifications
Power supply  220 VAC ±10%,50 Hz ±3, 0.2 A,single phase, 50 W - 110 VAC ±10%, 60 Hz ±3 on request  Instrument dimensions  (W x D x H) 300 x 400 x 450 mm  Weight  10 Kg 
Personal Computer
Personal Computer  Minimum Configuration: Intel Core I3 2 GB RAM.
Compatible Operating Systems: Windows 7, 8 and 10;
Connection to the instrument via USB Cable (included) 
Related pages
Product leaflet

General catalogue

Calibration certificate
CE certificate


Which is the minimum weight for a measurable sample ?
The minimum weight of a specimen is defined on the basis of the resolution of the scale used and the tolerance limits provided for the result of the density measurement: With tolerance limits of ± 0.02 g / cm3 (typical for rubber products) the minimum acceptable weight of a sample is: - 1 g using a scale with 0.001 g resolution - 0.1 g using a balance with resolution 0.0001 g
What i can do if air bubbles remain on the specimen?
The speed of movement of the glass and the shape of the specimen holders have been designed to minimize the risk of air bubbles remaining on the specimen. However, if bubbles remain, it is advisable to immerse the specimen in ethyl alcohol, allow it to dry and carry out the test, or directly use ethyl alcohol as the reference liquid
Why purchase Gibitre Density Check instead of a STANDARD DIGITAL SCALE WITH DENSITY KIT ?
Standard Scale with Density Kit: - Require Manual positioning of the sample on the scale - Require Manual positioning of the sample in the water - Require Manual removal of the sample from the water - Don’t permit to export results to a database - Don’t adjust the density of the test liquid to the temperature - Don’t permit to check the tolerance limits - Don’t permit to calculate the average of 3 samples (as requested by the standard) - Don’t permit to make statistics - Don’t permit to calculate the density of products with density below 1 g/cm3 - Don’t permit to calculate % Mass Variation and % Volume variation after ageing of the samples - Don’t permit to automatically calculate Abrasion Loss Gibitre Density Check: - Automatically moves the water glass to make the testing automatic and quick (about 9 seconds for the total process) - Automatically calculates the density of the test liquid according to the temperature of the liquid - Saves all the test results in the same database where the results of Tensile tester are stored - Checks the conformity with tolerance limits for the product - Permit to calculate statistics about the density of different samples and among different productions - Permits to compare the results before and after ageing of the samples and automatically calculates % Mass Variation and % Volume variation according to ISO 188, ISO 1817, ASTM D471, ASTM D865 - Permits to calculate density of products with density below 1 (like foam, cellular products, etc) - In combination with an Abrasion tester, permits to calculate automatically Abrasion Index and Volume Abrasion Loss according to ISO 4649 (considering paper abrasivity in the calculation)
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