Specific gravity tester

Introduction

A specific gravity tester is an instrument used to measure the specific gravity of a substance, which is the ratio of the density of the substance to the density of a reference substance, usually water, and it is used for quality control and material identification in the petroleum, battery, food, chemical, and pharmaceutical industries. Specific gravity testers include various types: hydrometers, which float in a liquid and indicate the specific gravity by the depth of immersion on a calibrated scale; digital density meters, which use the oscillating U-tube principle to measure the density and calculate the specific gravity with high accuracy; balances with density kits, which use the Archimedes principle for solids; and specific gravity balances for various materials, and the choice of instrument depends on the material, the required accuracy, and the application. Specific gravity testers are used for testing battery acid, for which the specific gravity indicates the state of charge; for testing petroleum products, such as fuels and lubricants, for which the specific gravity is an important specification; for testing foods and beverages, such as sugar solutions and juices; for testing chemical solutions and raw materials; for testing polymers and rubber; for gemology, for identifying gemstones; and for quality control and research, and they are used in refineries, battery manufacturers, food processing plants, chemical plants, and laboratories, and they are available as manual and digital instruments, with features such as temperature compensation and digital displays. With their importance in determining specific gravity and density, specific gravity testers are essential instruments in many industries.

Specific Gravity Tester LSGT-T2010

Specific Gravity Tester determines the theoretical maximum specific gravity of bituminous mixtures in accordance to D2041 Standard Test Method for Theoretical Maximum Specific Gravity of...

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Standards

Complies with the above standards, but is not limited to them.

Features

1. Specific gravity tester for measuring density and specific gravity of materials.

2. Multiple measurement methods including hydrostatic, pycnometer and digital.

3. Suitable for plastics, rubber, metals, minerals, chemicals and quality control.

4. Precision measurement with temperature control for reproducible results.

5. Includes measurement system, sample handling, temperature control and controller.

FAQ

Q1: What testing scenarios is this tester mainly applied to?

A: The specific gravity tester is used in plastics manufacturing, rubber industry, metal processing, mineral testing, chemical analysis, construction, jewelry and quality control laboratories to measure the specific gravity (relative density) of solid and liquid materials including plastics, rubber, metals, minerals, chemicals, gemstones and industrial products. It supports plastic and rubber material density measurement for quality control, metal and alloy density verification, mineral and gemstone identification, chemical product density testing, construction material density assessment, and precious metal purity testing. Specific gravity is a fundamental physical property indicating material composition, porosity, purity and quality. It is essential for plastics, rubber, metals, minerals, chemical and industrial laboratories requiring specific gravity measurement for material identification, quality control, composition analysis, purity assessment, product specification compliance and research, where specific gravity (relative density) is a fundamental physical property used to verify material identity, assess composition and porosity, determine purity, evaluate product consistency and support material selection in plastics, rubber, metals, minerals, chemicals, jewelry and industrial applications requiring accurate, reproducible density measurement per ISO, ASTM and industry specifications.

Q2: What standards does the tester comply with?

A: The specific gravity tester supports methods referenced in ISO 1183 for plastics density, ASTM D792, ASTM D297 for rubber, ISO 2781, ISO 3811 for rubber, and relevant GB/T standards. The hardware complies with IEC 61010 laboratory safety standards. Calibration should use certified weights and density reference standards traceable to international standards.

Q3: What is the warranty period for the whole machine and key components?

A: The whole tester is covered by a 12-month warranty. The measurement system, balance or sensor, temperature control and controller are covered, while sample containers, fluids and standards are consumables or accessories. Damage from improper use or unauthorized repair is excluded. Extended service contracts are available.

Q4: Is this device difficult to operate? Is professional training required?

A: Operation requires trained laboratory personnel familiar with density measurement methods and sample handling. We provide operation manuals, training and application support. Proper method selection, sample preparation, temperature control and measurement technique are important for accurate specific gravity results.

Q5: What is the typical lead-time for order delivery?

A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.

Q6: Is regular calibration required? What is the recommended calibration cycle?

A: Calibration with certified weights and density reference standards recommended every 6-12 months. Temperature calibration against a reference thermometer periodically. Full performance verification with reference materials recommended for accredited laboratories. Routine cleaning and maintenance per manufacturer schedule.

Q7: Are supporting consumables universal?

A: Reference fluids, sample containers, calibration standards and weights are available from laboratory suppliers, though certified standards are recommended for accuracy. Long-term consumable cost is low to moderate depending on measurement method.

Q8: Can I customize parameters or supporting accessories?

A: Customization includes measurement method, sample type (solid or liquid), capacity, temperature control and accuracy level. Additional accessories and kits can be ordered separately. Custom orders extend delivery lead-time.

Q9: Does the purchase include on-site installation and commissioning service?

A: Standard delivery includes the specific gravity tester and accessories with an operation manual. On-site installation, calibration and training are not included for standard orders but can be arranged for quality control laboratory setup. Remote guidance is provided.

Q10: What types of samples are compatible with this equipment?

A: The specific gravity tester measures density of solids, liquids, powders and pastes within the method range, sample capacity and temperature specification. Sample type determines the appropriate measurement method (hydrostatic, pycnometer, digital). Porous solid samples may require special preparation (wax coating, vacuum impregnation). Very small or very light samples require higher precision instrument. Users should select the appropriate measurement method for the sample type, follow proper sample preparation and temperature equilibration, use certified calibration standards, ensure representative sampling, and report results as specific gravity (relative to water at a specified temperature) or density with units and temperature specified for accurate, reproducible comparison. The test should be performed at a controlled temperature since density varies with temperature, and the reference fluid temperature should be accurately measured and recorded.