Sethi Instruments is a trusted name in laboratory testing equipment, soil testing equipment, aggregate testing instruments, test sieves, cement and concrete testing equipment, bitumen testing machines, and general laboratory testing instruments. The company serves laboratories, construction companies, civil engineering professionals, geotechnical laboratories, quality-control facilities, educational institutions, research organizations, and industries that require dependable material testing solutions.
With roots dating back to 1985, Sethi Instruments focuses on providing testing instruments designed for accuracy, durability, repeatable performance, and practical laboratory use. The company operates from New Delhi and supplies testing equipment for customers in India and international markets.
About Sethi Instruments
Sethi Instruments works with a product range covering several important areas of civil engineering and material testing. Its offerings include equipment for soil testing, aggregate testing, particle size analysis, bitumen testing, cement and concrete testing, and general laboratory applications.
The company information states that the business was founded in 1985 as Labtek Enterprises and has developed experience in manufacturing and exporting laboratory testing equipment. Its New Delhi operation supports the design, assembly, quality verification, and supply of testing instruments for domestic and international requirements.
Sethi Instruments emphasizes product quality, experienced personnel, modern machinery, precision tools, and quality checks before dispatch. Its stated business priorities include timely delivery, total quality management, experienced workforce, competitive pricing, transparent business practices, and customer support.
Laboratory Testing Equipment from Sethi Instruments
Laboratory testing plays an important role in determining the quality and performance of construction and engineering materials. Accurate testing helps engineers and technicians evaluate properties such as particle size, density, moisture, strength, impact resistance, bitumen content, consistency, and other material characteristics.
Sethi Instruments provides equipment across several testing categories.

1. Test Sieves and Particle Size Analysis Equipment
Test Sieves are fundamental laboratory instruments used to separate and classify particles according to their size. They are commonly used for soil, sand, aggregates, cement, minerals, powders, and other granular materials.
Sieve analysis can help laboratories determine particle-size distribution and evaluate whether a material meets a required specification or testing procedure.
Sethi Instruments also supplies Sieve Shakers, which provide controlled mechanical movement for efficient and repeatable sieving.
The company’s current website identifies Test Sieves as one of its key product areas and highlights their use for precise particle-size analysis in applications including construction, pharmaceuticals, and mining.
Related Sieve Testing Equipment
- Test Sieves
- Brass Sieves
- GI Sieves
- Ballast Sieves
- Sieve Shaker
- Riffle Sample Divider
For laboratories handling frequent particle-size analysis, selecting appropriate sieve sizes, construction materials, and a suitable shaking method is important for obtaining consistent results.
2. Sieve Shaker
A Sieve Shaker is designed to automate and standardize the sieving process. Instead of manually shaking a stack of test sieves, the machine applies controlled mechanical movement to help distribute material across the sieve surfaces.
Sethi Instruments’ Sieve Shaker is designed to accommodate up to eight 8-inch diameter sieves. It uses a ¼ HP motor with a reduction gear mechanism and combines gyratory movement with vertical vibration.
The sieve table does not rotate directly. Its inclination progressively shifts while the table also moves vertically, helping make effective use of the sieve surface. The gear mechanism operates in an oil bath to support smooth operation and durability.
This type of equipment can be useful in laboratories where particle-size analysis needs to be performed regularly and consistently.
Related guide:
Explore the Sieve Shaker Guide

3. Riffle Sample Divider
A Riffle Sample Divider is used to obtain representative portions from bulk samples of granular or powdered materials.
Sample preparation is an important part of laboratory testing. If a sample is not representative of the original material, the final test results may not accurately reflect the material being investigated.
A riffle divider uses a series of alternating chutes to divide material into separate containers. When properly used, this arrangement helps produce a more uniform division of the original sample.
Sethi Instruments’ Riffle Sample Divider is designed for applications involving:
- Aggregates
- Sand
- Cement
- Coal
- Ores
- Pigments
- Refractory materials
- Powdered materials
Different chute configurations are available, including 13 mm, 20 mm, 25 mm, 40 mm, 50 mm and 63 mm options.
Related guide:
Explore the Riffle Sample Divider
4. Soil Testing Equipment
Soil testing is essential for geotechnical investigations, construction projects, highways, foundations, earthworks, and quality-control applications.
Sethi Instruments offers a range of soil testing equipment intended to support different laboratory and field testing requirements. The current soil-testing category includes Cone Penetrometer, Liquid Limit Device and Rapid Moisture Meter, alongside other soil-testing products shown on the website.
Soil Testing Equipment Includes
- Sand Pouring Cylinder
- Cone Penetrometer
- Liquid Limit Device
- Shrinkage Limit Device
- Rapid Moisture Meter
These instruments support different aspects of soil characterization, including moisture determination, consistency-related testing, penetration-related evaluation, and field-density measurement.
5. Sand Pouring Cylinder
The Sand Pouring Cylinder is an important apparatus used for determining the in-situ density of soil through the sand replacement method.
Field density testing helps engineers evaluate soil compaction and assess whether compacted ground meets the requirements of a construction project.
Sethi Instruments offers Sand Pouring Cylinder models in 100 mm, 150 mm and 200 mm sizes.
The equipment can include a calibrated cylinder, conical funnel, shutter mechanism, metal tray, and calibrating container, depending on the model.
Common Applications
Sand Pouring Cylinders can be used in:
- Soil compaction testing
- Highway construction
- Civil engineering projects
- Geotechnical investigations
- Field density testing
- Construction quality control
The choice of cylinder size depends on the material, test requirements, and size of the test area or test pit.
Related guide:
Explore the Sand Pouring Cylinder6. Aggregate Testing Equipment
Aggregates are major components of concrete, asphalt, road construction, and other civil engineering materials. Testing aggregate properties helps engineers evaluate their suitability for specific applications.
Sethi Instruments’ aggregate-testing range includes equipment for evaluating characteristics such as crushing behavior, impact resistance, bulk density, specific gravity, water absorption, and elongation. The current aggregate category lists five products.
Aggregate Testing Equipment
- Aggregate Crushing Value Apparatus
- Aggregate Impact Testing Machine
- Cylindrical Metal Measures
- Density Basket
- Length Gauge
Aggregate Crushing Value Apparatus
This apparatus is used for determining the Aggregate Crushing Value of aggregate samples.
Aggregate Impact Testing Machine
The Aggregate Impact Testing Machine is used to determine the impact value of coarse aggregate and evaluate its resistance to sudden impact.
Cylindrical Metal Measures
Cylindrical Metal Measures are used for determining the bulk density or unit weight of aggregates. The website lists 3-litre, 15-litre and 30-litre sizes.
Density Basket
A Density Basket is used for determining the specific gravity and water absorption of aggregate.
Length Gauge
A Length Gauge, also called an Elongation Gauge, is used for determining the elongation index of coarse aggregate.
7. Bitumen Testing Equipment
Bitumen and asphalt materials are extensively used in roads and pavement construction. Laboratory testing helps determine important properties and characteristics of bituminous materials and mixtures.
Sethi Instruments currently lists five major products under its Bitumen Testing category.
Bitumen Testing Equipment Includes
- Bitumen Extractor
- Ductility Testing Machine
- Marshall Stability Apparatus
- Ring & Ball Apparatus
- Tar Viscometer
Bitumen Extractor
A Bitumen Extractor is used for determining the percentage of bitumen in bituminous mixtures. The Sethi Instruments model uses a removable precision-machined aluminum rotor bowl mounted on a vertical shaft.
Ductility Testing Machine
The Ductility Testing Machine is designed for ductility testing and can test three specimens simultaneously. The equipment uses a controlled moving carriage and water bath system. The website specifies the model as per IS:1208.
Marshall Stability Apparatus
Marshall Stability testing equipment is used in asphalt and pavement laboratories for evaluating the stability and flow characteristics of bituminous mixtures.
Ring & Ball Apparatus
The Ring & Ball apparatus is used for softening-point-related testing of bituminous materials.
Tar Viscometer
The Tar Viscometer is used for determining the viscosity of materials such as cutback bitumen and road oil; the listed product is specified as per IS:1206.
8. Cement and Concrete Testing Equipment
Cement and concrete testing is another important part of construction-material quality control.
Sethi Instruments’ current cement and concrete category includes equipment such as Blain Air Permeability Apparatus, Cube Moulds, Hand Operated Compression Testing Machine, Slump Test Apparatus and Vicat Needle Apparatus.
Blain Air Permeability Apparatus
This apparatus is used for determining the fineness of cement and other powdery materials in terms of specific surface.
Cube Moulds
Cube moulds are used for preparing concrete or cement specimens for strength testing.
Compression Testing Machine
The Hand Operated Compression Testing Machine is designed for determining compressive strength of concrete and mortar specimens. The website lists different available capacities, including 250 kN, 500 kN, 1000 kN and 2000 kN models.
Slump Test Apparatus
A Slump Test Apparatus is used for evaluating the consistency/workability of fresh concrete. Sethi Instruments lists a slump apparatus as per IS:7320-1974.
Vicat Needle Apparatus
Vicat Needle Apparatus is used for determining the consistency of cement paste and initial and final setting times.
Why Choose Sethi Instruments?
Selecting laboratory testing equipment requires more than simply comparing prices. Accuracy, construction quality, application suitability, repeatability, availability, and technical support are all important considerations.
Sethi Instruments focuses on these areas through:
Experience
The business traces its history to 1985, giving it decades of experience in testing equipment and material-testing applications.
Quality-Focused Manufacturing
The company states that its equipment undergoes quality verification across multiple parameters before final dispatch.
Experienced Team
A skilled team manages manufacturing and processing activities, with regular quality updates and training intended to maintain consistent production standards.
Wide Product Range
Customers can source equipment across soil, aggregate, sieve, cement, concrete, bitumen and general laboratory testing requirements.
Domestic and International Supply
With its head office in New Delhi, Sethi Instruments supplies testing equipment to customers in India and international markets.
Customer Support
Sethi Instruments provides assistance for product inquiries, quotations, support, and after-sales service.
Industries and Applications
Sethi Instruments’ testing equipment can support a wide range of applications, including:
- Civil engineering laboratories
- Construction companies
- Geotechnical laboratories
- Highway and road projects
- Material testing laboratories
- Quality-control departments
- Mining applications
- Research laboratories
- Educational institutions
- Aggregate testing facilities
- Cement and concrete laboratories
- Asphalt and pavement laboratories
The right equipment depends on the material being tested, the required test method, sample characteristics, laboratory environment, and applicable testing standard.
Choosing the Right Laboratory Testing Equipment
Before purchasing a testing instrument, laboratories should consider several factors.
First, identify the test requirement. Determine exactly which material property needs to be measured.
Second, select the appropriate equipment. For example, particle-size analysis may require Test Sieves and a Sieve Shaker, while field soil-density testing requires a Sand Pouring Cylinder.
Third, check capacity and specifications. Equipment dimensions, sample capacity, motor specifications, measurement range, and accessories should match the intended application.
Fourth, consider testing standards. Where applicable, the equipment should be selected according to the relevant IS or other applicable testing procedure.
Finally, consider support and service. Availability of product information, technical assistance, spare parts, and after-sales support can be important for long-term laboratory operation.
Sethi Instruments: Complete Testing Equipment Solutions
From Test Sieves and Sieve Shakers to Sand Pouring Cylinders, Riffle Sample Dividers, Aggregate Testing Equipment, Bitumen Testing Machines, Cement Testing Equipment and Concrete Testing Instruments, Sethi Instruments provides a broad range of solutions for material testing and quality control.
The company’s focus on testing equipment, manufacturing experience, product quality, and customer support makes it a practical supplier for laboratories and engineering organizations looking for reliable testing instruments.
Whether the requirement is particle-size analysis, soil density testing, aggregate evaluation, bitumen testing, cement testing, or concrete quality control, selecting equipment that matches the application and testing procedure is essential for dependable results.
Frequently Asked Questions
What does Sethi Instruments manufacture and supply?
Sethi Instruments supplies Test Sieves, Soil Testing Equipment, Aggregate Testing Instruments, Bitumen Testing Equipment, Cement & Concrete Testing Equipment, and General Laboratory Testing Instruments.
What is a Test Sieve used for?
A Test Sieve is used to separate particles by size and determine particle-size distribution of materials such as soil, sand, aggregates and powders.
What is a Sieve Shaker used for?
A Sieve Shaker provides controlled mechanical movement to assist in efficient and repeatable particle-size analysis using a stack of Test Sieves.
What is a Riffle Sample Divider?
A Riffle Sample Divider divides a bulk granular or powdered sample into representative portions using a series of alternating chutes.
What is a Sand Pouring Cylinder used for?
A Sand Pouring Cylinder is used to determine the in-situ density of soil through the sand replacement method.
Does Sethi Instruments supply equipment for aggregate testing?
Yes. The current product range includes Aggregate Crushing Value Apparatus, Aggregate Impact Testing Machine, Cylindrical Metal Measures, Density Basket and Length Gauge.
Does Sethi Instruments supply bitumen testing equipment?
Yes. Its Bitumen Testing category includes Bitumen Extractor, Ductility Testing Machine, Marshall Stability Apparatus, Ring & Ball Apparatus and Tar Viscometer.
Conclusion
Sethi Instruments provides a comprehensive range of laboratory and material testing equipment for soil, aggregates, sieving, cement, concrete, bitumen and related engineering applications.
With experience dating back to 1985, a New Delhi base, manufacturing and assembly capabilities, quality-focused processes, and a broad product portfolio, the company serves the requirements of laboratories, construction professionals, engineers, educational institutions and industrial testing facilities.
If you are looking for Test Sieves, Sieve Shakers, Riffle Sample Dividers, Sand Pouring Cylinders, Soil Testing Equipment, Aggregate Testing Equipment, Bitumen Testing Machines, Cement Testing Equipment or Concrete Testing Instruments, explore the Sethi Instruments range and contact the company for product information, specifications, quotations and support.
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Sethi Instruments
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