マルイ List of Products and Services

This is a shaker that generates vertical vibrations in the oscillator using an electromagnet and transmits them to the vibration base. Compared to other models, it allows for testing with low noise. It is lightweight and compact, capable of wet sieving, has no startup time, and operates quickly. Additionally, it features stepless variable frequency and intermittent operation. 【Features】 ● Lightweight, compact, and low noise ● Wet operation possible ● Adjustable vibration start settings

• Other measuring instruments
• others
• stone

This is a device that can sort a large amount of concrete aggregates and other materials at once. The amplitude is in the horizontal direction. Additionally, it is movable with casters, allowing for flexible placement and effective use of testing space. 【Features】 ● Can accommodate approximately 20 kg in a wooden frame sieve ● Allows for sorting in a short time ● Movable with casters

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This is a device for measuring the propagation time of ultrasonic waves, making it ideal for diagnosing the deterioration of concrete structures and for quality inspection and deterioration diagnosis of ceramic materials. It features a one-touch measurement system without adjustment knobs (just turn the switch ON), ensuring no individual differences in measurements. Additionally, the LED display makes it easy to check measurement values even in the dark, and its carrying case design makes it easy to transport.

• Rock drills, demolition machines, and excavators
• Other measuring instruments
• Other analytical equipment

This device is a groundbreaking testing machine that can conduct "unconfined compression tests on soil" on three specimens at once. Since it has an independent loading system, tests can be started sequentially from the prepared specimens, allowing for efficient testing. The loading is equipped with an auto-range feature, enabling tests across a wide range of loads without the need to change the load cell, and with a maximum capacity of 50 kN, it can also test cement-treated soil and cement milk. Control is fully automated via computer, which also adjusts the displacement speed automatically according to the height of the specimen. During testing, the stress-strain curve can be displayed in real-time, and data is processed and reported in accordance with the standards of the Geotechnical Society. 【Features】 ● Capable of high-load testing for cement-treated soil and similar materials ● PC control automatically adjusts displacement speed according to specimen height! ● All data recording and report preparation are fully automated!

• Other measuring instruments
• Wood processing
• others

The definitive version of the specimen end face finishing machine, "Triple Haiken Matsuru Tsuru Tsuru," has evolved even further! Until now, it featured: - Simultaneous grinding of three specimens, cutting manpower, working time, and installation space by one-third - One-touch specimen fixation with lever opening and closing - Various bases to accommodate different sizes of specimens - Thorough quality control with flatness measurement inspection conducted during test grinding at the time of product shipment While maintaining these features, we have added: - Sludge countermeasure function (reducing sludge adhesion generated during grinding with a cleaning nozzle) - Shaving amount reference plate (converting grinding time into approximate shaving amount) - Water supply filter (preventing clogging when using industrial water) These improvements make it even easier to use and further enhance the efficiency of testing operations!

• Concrete curing material
• Concrete Machinery
• stone

This is a device that automatically compacts soil that has passed through a 37.5mm sieve as specified in JIS A 1210, in order to determine the "dry density - moisture content curve," "maximum dry density," and "optimal moisture content." With its unique mold receiving platform movement, there is no residual compaction, and the powerful arm mechanism of the W pulley ensures consistent results. Additionally, the interlocking of the drop mechanism and the mold receiving platform enables high-speed compaction, reducing testing time. 【Features】 ● No residual compaction due to the unique movement of the mold receiving platform ● Compaction of φ100mm and φ150mm without pulley replacement (lever switch) ● Consistent results with the powerful arm mechanism of the W pulley ● High-speed compaction achieved with the interlocking drop mechanism and mold receiving platform, reducing testing time ● Safety considerations with a cover installed over the drive unit

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This is a heat deformation and weather resistance testing device for building boards. By combining irradiation and sprinkling, it is possible to investigate the effects of sunlight and rain. Since it is a closed type using insulation materials, highly accurate temperature control tests can be conducted. 【Features】 ● The infrared lamps are controlled by a unique zone division, eliminating irradiation and temperature unevenness based on the position of the test specimen. ● Infrared irradiation can be controlled based on the surface temperature of the test specimen. ● Settings for conditions, test duration, temperature, etc., can be easily operated via a touch panel. ● Equipped with a self-diagnosis function for peace of mind in case of any troubles. ● Sprinkling temperature can also be adjusted (optional).

• Bathroom, shower, washbasin and toilet equipment
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• others

This is a device that can perform thermal deformation tests on full-scale architectural panels. The infrared lamps used for irradiation are controlled by a unique zone division, ensuring there are no irradiation inconsistencies based on the position of the test specimen. 【Features】 ● By combining infrared irradiation and a sprinkling function, it is possible to investigate deformations caused by sunlight and rain. ● The infrared lamps are controlled by a unique zone division, eliminating irradiation inconsistencies based on the position of the test specimen. ● The sprinkling device uses a natural drop method, ensuring there are no inconsistencies in the sprinkling. ● Settings for conditions, test duration, temperature, etc., can be easily operated via a touch panel. ● Equipped with a self-diagnosis function, providing peace of mind in case of any troubles.

• Other measuring instruments
• others

Measures the in-plane shear strength and in-plane shear stiffness of structural frame components such as building panels and wooden structures. Equipped with a mechanism for conducting repeated tests and failure tests during positive and negative deformation angles under automatic control. Data collection and analysis can be performed via computer control. 【Features】 ● Precise stroke control is possible with a servo motor system ● Actuator height can be adjusted with a manual winch, reducing the effort required for specimen setup ● The chain block at the top of the frame supports the specimen setup ● High-rigidity fixtures suppress out-of-plane deformation of the specimen

• Rock drills, demolition machines, and excavators
• Other measuring instruments
• others

This is a device for measuring the bending strength of construction panels and similar materials. It uses an electric-hydraulic servo system, allowing for repeated bending tests at a fast cycle. 【Features】 ● Conducts repeated bending fatigue tests at a fast cycle using an electric-hydraulic servo system ● Can also perform static tests ● Data recording and processing is possible with computer control ● Complies with JIS A 1408 / JIS A 1414 standards

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This is a device for measuring the bending strength of materials such as ALC and construction panels. Since there is no frame at the bottom of the testing machine, test specimens can be set up from the front using a forklift, reducing the preparation time for testing. It allows for load control, displacement control, and repetitive control testing via computer. 【Features】 ● Load control, displacement control, and repetitive control can be performed from a computer. ● The unique measurement structure eliminates the frame at the bottom of the testing machine, allowing test specimens to be set from the front using a forklift. ● The spacing between supports is approximately 3800 mm, allowing for movement of the load axis. ● It can conduct panel bending tests, truss tests, beam joint tests, and more. ● Complies with JIS A 1414 standards. ● Compatible with various sizes of test specimens: ・W 3000 × D 2000 × H 250 mm (panel test) ・W 3640 × D 100 × H 1300 mm (truss test) ・W 3000 × D 80 × H 320 mm (beam joint test) ・W 2000 mm (cantilever beam joint test)

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This is a device for testing the bending strength of precast products and similar items. It has a wide spacing between the pressure plates, allowing for bending tests of secondary products such as box culverts. In load measurement, it detects the directly applied load by disconnecting the hydraulic system and displays it electrically on a measuring scale, enabling the acquisition of highly accurate test data. 【Features】 ● Load measurement is a high-precision type that detects only the actual load by disconnecting the hydraulic system and displays it electrically. ● The effective spacing between pressure plates is wide, allowing for the setup of taller test specimens. ● The loading axis is movable. ● Compliant with JIS A 5371 / JIS A 5372 / JIS A 5373 standards.

• Concrete curing material
• Other measuring instruments

This device is designed with a 4-cell configuration, accommodating specimen widths ranging from φ50 to 75 mm, and allows for independent loading of each cell, enabling test settings and loading to start for each specimen. It efficiently handles a wide range of triaxial tests. To enhance data accuracy, the loading frame is designed with six columns to achieve zero deflection at the center, and displacement gauges are installed for each cell. Additionally, the outer cylinder of the triaxial cell is automatically raised (via an air cylinder), and the cell itself has been miniaturized to save labor and space. Manual control is used for operations other than axial loading, making parts replacement easy. 【Features】 ● Wide range of applicable specimen sizes: φ50×100 mm / φ60×120 mm / φ75×150 mm ● Each cell has independent loading, allowing loading to start for each specimen and enabling adjustable test settings ● The loading frame is designed with six columns, eliminating deflection at the center and ensuring high data accuracy ● Displacement gauges are installed for each cell, allowing for detailed data collection ● The outer cylinder of the triaxial cell rises automatically, improving the workability of test preparation ● Control other than axial loading is manual, reducing costs for parts replacement and other tasks.

• Other measuring instruments
• Other analytical equipment
• others

This is a testing room for conducting curing and durability tests on various specimens such as concrete and building materials under controlled temperature and humidity conditions. It can be easily operated via a touch panel, and the use of a capacitive humidity sensor ensures excellent humidity management accuracy. 【Features】 ● Capable of operating under cold conditions with negative temperatures ● If securing space for opening doors is difficult, it can be changed to a sliding door type ● Flexible customization of size, shape, etc., according to customer requests ● Significantly stabilizes the wind speed distribution and temperature-humidity distribution within the chamber ● The "Sky Air Cycle System" can also be added for further stabilization.

• Other measuring instruments
• Other analytical equipment
• Prefab

This is a testing device that maintains a constant temperature, humidity, and CO₂ concentration within the chamber to promote the carbonation of concrete specimens. It features a structure that prevents airflow bias, ensuring a stable testing environment at any location within the test chamber. Additionally, it minimizes CO₂ gas consumption. 【Features】 ● Achieves stable temperature, humidity, and CO₂ distribution at any position within the test chamber ● The door is designed with a double special packing to prevent CO₂ leakage and features a safety automatic locking mechanism ● The interior of the chamber is made entirely of stainless steel, eliminating corrosion issues.

• Entrance/Exterior Doors
• Other measuring instruments
• stone

This is a testing device that maintains a constant temperature, humidity, and CO₂ concentration in the chamber to promote the carbonation of concrete specimens. It has a structure that prevents airflow bias, ensuring a stable testing environment at any location within the test chamber. Additionally, it also minimizes the consumption of CO₂ gas.

• Entrance/Exterior Doors
• Other measuring instruments
• stone

This is a compression testing machine for specimens such as concrete, which applies load using a manual hydraulic method and measures compressive strength with a Bourdon tube pressure gauge. It does not require a power source or pressure equipment for testing operations, and its relatively lightweight and portable design makes it suitable for use in remote areas without electricity. A bending test device can also be attached.

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This is a lightweight and compact simple compression testing machine that can be manually transported to the site. It features continuous loading at a constant load, compatibility with strain gauges, a peak hold function, and the ability to output to a data logger, making it a highly functional compression testing machine despite its simple design. 【Features】 ● Capable of testing compressive strength up to 100 N/mm² ● Lightweight (approximately 60 kg), compact design, and easy to transport and assemble ● Strain measurement is also available as an option ● Load cell and load display can be calibrated to JCSS standards

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The "High Multi" is a groundbreaking triaxial testing machine that can test four specimens at once, achieving four times the testing efficiency compared to conventional single-series machines. It can reduce not only testing time but also running costs to one-fourth. Additionally, its compact design, with four interconnected cells, minimizes the installation area of the equipment, allowing for effective use of laboratory space. The operation can be fully automated from a computer, controlling the entire process of the soil triaxial compression test, including "supply of side fluid, application of back pressure and cell pressure, consolidation, and axial compression." This enables unattended testing at night, significantly improving operational efficiency. Furthermore, it eliminates individual errors in test results, enhancing the reliability of the data. 【Features】 ● Simplified handling due to standardized operating procedures ● Unattended testing possible from the consolidation process to the end of axial compression ● Multi-cell loading can be compressed in the same location as consolidation testing ● Nighttime testing can be conducted unattended, reducing testing time and costs ● Usable by non-experts, making it a rational choice regardless of the tester

• Other measuring instruments
• Other analytical equipment
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This is a "Gas Phase Freezing and Water Melting (Method B)" testing machine for building materials such as slate, siding, gypsum board, and paint. By stacking the test chamber and water tank vertically, it features an energy-saving design that reduces thermal loss during the "melting phase" of the constant temperature water circulation and the pump power required for water circulation. Additionally, the water tank lid opens from the top for easy maintenance and also serves as a step stool, making it practical. Other considerations for maintenance include an external fan motor for cold air circulation. 【Features】 ● During "Water Melting": Unique upper and lower dual-chamber structure allows constant temperature water to circulate just below the test chamber, eliminating thermal loss. ● During "Gas Phase Freezing": Warm water naturally falls back from the test chamber to the water tank, reducing energy consumption for circulation. ● Easy operation with a touch panel. ● Peace of mind with a self-diagnosis function in case of trouble. ● User-friendly design that considers maintenance. ● Direct circulation structure achieves stable temperature distribution.

• Gypsum board and moldings
• Other wall materials

Marui Corporation is renowned for its technology in manufacturing testing machines that create artificial natural environmental conditions to examine the durability of concrete. Additionally, it develops and manufactures various freeze-thaw testing machines for building materials. 【Product Lineup】 ○ JIS-A Method: MIT-683-1 Type ○ JIS-B Method: MIT-682-1 Type ○ JIS Building Materials: MIT-692-1 Type ○ JIS-A & B Method: MIT-684-1 Type ○ Dedicated for Building Materials: MIT-693-1 Type, and others For more details, please contact us or download the catalog.

• Other measuring instruments
• Other analytical equipment

The "Triple High-Precision Polisher" is a revolutionary device that can automatically polish the end faces of concrete, rocks, and other test specimens simultaneously with three units. Compared to traditional single-unit polishers, it reduces manpower, working time, and installation space by one-third, supporting the efficiency of your testing operations. Additionally, it features a user-friendly design with one-touch specimen fixation using a lever, a simple control panel, and various bases that accommodate different sizes of specimens. Furthermore, we conduct flatness measurement inspections through test polishing at the time of product shipment, ensuring thorough quality control. 【Features】 ● Capping finish is clearly visible ● Safe and quick operation ● Easy specimen fixation with one-touch lever opening and closing ● Comes with an end face inspection sheet for assured product quality

• Concrete curing material
• Concrete Machinery
• stone

Marui's "Hiaktis" is a fully automatic concrete compression testing machine. In conventional Amsler-type testing machines, the operation of two hydraulic valves relied on the tester's experience, but "Hiaktis" conducts the entire test automatically until the specimen is destroyed, eliminating individual differences in test results. The operation method is simple; by selecting the "specimen size" and "predicted strength" on the touch panel, compression tests can be easily performed. Additionally, it features a "blackboard display mode" that is convenient for capturing test conditions, as well as safety measures (such as a box-type high-rigidity design, shatterproof transparent cover, and explosion prevention function), making it a reliable and user-friendly compression testing machine. 【Features】 ○ Compact design that does not require a specific installation location ○ High-rigidity frame and comprehensive safety measures, including shatterproof cover ○ Convenient display mode switching for capturing test conditions ○ Intuitive and easy operation via touch panel ○ A variety of options are also available *For details about options and other inquiries, please contact us or visit the product introduction page on our website.

• Rock drills, demolition machines, and excavators
• Other measuring instruments
• Other analytical equipment

The "Simple Support Strength Measuring Device Caspol" is a tripod-type measuring instrument that can evaluate the support strength characteristics of the ground in real-time. It features simple and easy operation, minimizes individual errors, and does not require reaction force, making it applicable in narrow spaces and mountainous areas. The measurement principle involves dropping a rammer equipped with an accelerometer onto the ground and calculating the strength constants necessary for the foundation support strength of structures from the maximum impact acceleration obtained from the collision. This single device can measure K30, qc, CBR, c, and φ (converted values from impact acceleration). 【Features】 ● No reaction force is required for loading, allowing for low-cost measurement of various parameters. ● Usable in sites where heavy machinery cannot enter, improving construction management quality. ● Measurement is quick and does not take much time. ● Compact and lightweight, easy to operate, and suitable for any tester. ● Powered by batteries, enabling field measurements without worrying about power supply. ● NETIS registered product: NO.KK-980055-V ● Can calculate the "allowable support strength of the ground" using measurement constants. (→ The calculation method is explained on the Marui website: http://www.marui-group.co.jp/support/caspfol.html)

• Water Supply Facilities
• Geological Survey
• Other analytical equipment

W-Checker is a unit water measurement air meter that can accurately measure the unit water content of fresh concrete. It achieves the following three points through a high-precision digital air meter and scale: ● "Simple" - Anyone can easily measure without individual differences. ● "Quick" - Measurement results can be confirmed in a short time of under 5 minutes. ● "High Precision" - High accuracy of ±5kg/m3. 【Features】 ● Water injection method that does not require leveling work. ● Uses a high-precision digital air meter (minimum reading value of 0.01%). ● The initial pressure point of the air meter can be arbitrarily determined within 95 to 120 kPa. ● Calibration of the measurement unit is possible. ● Both mass measurement unit and air volume measurement unit have traceability. ● No need for corrections to measurement lines, conversion formulas, or compensation formulas. ● Compatible with high-strength, high-flow concrete. ● Standard equipped with a mini printer, allowing measurement results to be printed on-site. ● Complies with JIS A 1116 / JIS A 1128 / JSCE-F 513 standards. ● Registered product in the Ministry of Land, Infrastructure, Transport and Tourism's New Technology Information System "NETIS" (Registration Number KK-050023-V).

• Other measuring instruments
• Other analytical equipment
• others

Conventional groundwater sampling equipment, such as bailers and submersible pumps, cannot sample at a specific depth without disturbance due to the structure of the devices. Marui's "Continuous Groundwater Sampling Device" allows for undisturbed sampling of groundwater at every 1-meter depth, making it a groundbreaking product that enables three-dimensional understanding of contamination concentration distribution. To sample, a single inner pipe with a strainer is quietly lowered to the designated position in the observation well, and when the groundwater stabilizes, an outer pipe is inserted around the inner pipe. Finally, both the inner and outer pipes are lifted together, and the two sampling pipes, which are sealed with water at each depth, are separated, allowing for undisturbed groundwater sampling. This is a patented product. 【Features】 ● Continuous sampling of groundwater every 1 meter in depth ● Allows for undisturbed sampling ● If multiple observation wells are available, the concentration distribution of groundwater can be understood in three dimensions ● Enables accurate execution from groundwater contamination surveys to purification countermeasure design and monitoring.

• Environmental Survey
• Other measuring instruments