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This is a basic type pH meter that can also operate on dry batteries.

The tabletop pH meter "HM-41X" is a basic type of pH meter that can operate on four AA alkaline batteries. The battery life is long, lasting up to approximately 2500 hours. Additionally, it can also be powered via a USB cable. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to take a look.

• Environmental Survey
• Water quality/pH measuring device

It is a tabletop pH and ion meter equipped with a large touch panel.

The tabletop pH and ion meter "HM-42X" is equipped with a large touch panel, offering excellent operability with an easy-to-read screen display. The display content is comprehensive, allowing for switching between vertical and horizontal orientations, and it also features a graph display that clearly shows the stability of measurement values. Additionally, maintenance information is well-provided. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to take a look.

• Water quality/pH measuring device

This is a basic type of electrical conductivity meter that can also operate on dry batteries.

The "CM-41X" electrical conductivity meter is a tabletop water quality meter that can measure electrical conductivity, electrical resistivity, salinity, TDS, and more. It is a basic type that can operate on four AA alkaline batteries, with a battery life of up to approximately 1000 hours. Additionally, it can also be powered via a USB cable. ◎ You can view details such as specifications from the "PDF Download." If you are interested, please download the catalog to take a look.

• Environmental Survey
• Water quality/pH measuring device
• Other measuring instruments

This is a 2-channel tabletop water quality meter that can measure pH, ORP, electrical conductivity, dissolved oxygen, ions, and more.

The tabletop multi-water quality meter "MM-43X" is a desktop water quality meter that can measure pH, ORP, electrical conductivity, electrical resistivity, dissolved oxygen, ions, and more. It can connect two sensors and display two parameters simultaneously. Additionally, it features a large touch panel with an easy-to-read screen display, enhancing usability. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to take a look.

• Water quality/pH measuring device

It is a tabletop electric conductivity meter equipped with a large touch panel.

The "CM-42X" electrical conductivity meter is a tabletop water quality meter that can measure electrical conductivity, electrical resistivity, salinity, concentration, TDS, and more. It features a large touch panel with an easy-to-read screen display, making it user-friendly. Additionally, the display is comprehensive, allowing for both vertical and horizontal display options, and it can show graphs that clearly indicate the stability of measurement values. Maintenance information is also well-documented. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to learn more.

• Environmental Survey
• Water quality/pH measuring device
• Other measuring instruments

This is a 2-channel tabletop water quality meter that can measure dissolved oxygen, pH, electrical conductivity, and more.

The tabletop multi-parameter water quality meter "MM-43X" is a desktop water quality meter capable of measuring dissolved oxygen, pH, ORP, electrical conductivity, ions, and more. It can connect two sensors and display two parameters simultaneously. Additionally, it features a large touchscreen panel that provides an easy-to-read display and excellent operability. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to learn more.

• Turntable
• Environmental Survey
• Water quality/pH measuring device

We have published a lot of information about electrical conductivity, including the temperature characteristics of solutions and measurement methods!

Electrical conductivity is defined as "the reciprocal of the electrical resistance measured in a container filled with an electrolyte solution, where two flat electrodes with an area of 1 m² face each other at a distance of 1 m." In other words, it indicates how easily electricity can pass through, which can also be said to be the sum of the ions contained in the solution. This document provides detailed information about electrical conductivity, including its units, temperature characteristics of solutions, and measurement methods. We encourage you to read it. 【Contents (excerpt)】 ■ Measurement of electrical conductivity ■ Electrical conductivity cell ■ Cell constant ■ Electrical conductivity at 25°C ■ Units of electrical conductivity *For more details, please refer to the PDF document or feel free to contact us.

• others

In addition to manual analysis, there are membrane electrode methods and optical sensor methods that utilize sensors for the quantification of dissolved oxygen.

Dissolved oxygen refers to the amount of oxygen (mg/L) that is dissolved in water. The amount that dissolves in water increases with lower water temperatures and higher pressures. Under conditions of 1 atmosphere and 25°C, it is estimated that about 8 mg/L (saturated dissolved oxygen level) of oxygen can dissolve. This document provides detailed information about dissolved oxygen sensors, non-aqueous solvent electrodes, and other information related to dissolved oxygen. Please take a moment to read it. [Contents] ■ About dissolved oxygen ■ Dissolved oxygen sensors ・ Membrane electrode method ・ Optical sensor method ■ For BOD measurement ■ Non-aqueous solvent electrodes *For more details, please refer to the PDF document or feel free to contact us.

• others
• Measurement and Inspection

To achieve highly accurate pH measurements, it is essential to minimize the generation of liquid junction potential.

When measuring pH, if you calibrate the pH meter with a pH standard solution of which the pH value is already known, you can directly determine the pH value from the electromotive force generated in response to the pH. This document provides detailed information about pH, including pH measurement methods, glass electrodes and reference electrodes, as well as the types and characteristics of pH electrodes. Additionally, we also introduce the oxidation-reduction potential, so please take a look at that as well. 【Contents】 <About pH> ■ pH measurement methods ■ Glass electrodes and reference electrodes ■ Temperature compensation electrodes ■ pH combination electrodes ■ pH standard solutions ■ Types and characteristics of pH electrodes *For more details, please refer to the PDF document or feel free to contact us.

• Water quality/pH measuring device
• others

Custom calibration feature supports PSL turbidity! A tabletop turbidity meter adopting a new 90° scattering method.

The "TU5200" is a tabletop turbidity meter capable of high-precision measurements even in low concentration areas. By placing a 10mL sample in a dedicated TU5 vial and setting it in the measurement section, the measurement will automatically start when the cover is closed. In single measurement mode, you can set an averaging time between 5 to 15 seconds, and in continuous measurement mode, you can set it between 5 to 90 seconds. 【Features】 ■ High sensitivity and high precision measurements in low turbidity areas ■ Custom calibration function ■ Compatible with PSL turbidity measurements ■ Signal accumulation averaging ■ External output *For more details, please refer to the PDF document or feel free to contact us.

• Analysis and prediction system
• Other analytical equipment
• Measurement and Analysis Equipment

Pursuing operability and high precision! A tabletop turbidity meter capable of measuring a wide range of turbidity from low to high turbidity.

The "TL2300/2350" is a tabletop turbidity meter designed to pursue operability and high precision. It irradiates the sample with light from a tungsten lamp, and the "TL2300" can measure up to 4000 NTU using a 90° scattered light detector, a transmitted light detector, and a forward scattered light detector. Additionally, the "TL2350" includes a backward scattered light detector, allowing measurements up to 10000 NTU. Measurement modes can be selected from three types: single, continuous, and RST (rapid settling sample). 【Features】 ■ Full-color touch screen ■ Self-diagnosis function ■ Calibration selection ■ Data storage and output ■ Built-in calibration compliant with the Japanese Pharmacopoeia *For more details, please refer to the PDF document or feel free to contact us.

• Analysis and prediction system
• Other analytical equipment
• Measurement and Analysis Equipment

Effective for simple monitoring! From environmental measurements of rivers and lakes to water quality management of factory and construction wastewater.

The "WQC-30" is a high-performance integrated sensor that can simultaneously measure up to 6 parameters, making it a simple portable multiparameter water quality meter. It features a memory function that can store 200 data points. Automatic memory at regular intervals is also possible, making it effective for simple monitoring. Additionally, it has a power-saving design that allows for continuous measurement for approximately 70 hours using two AA alkaline batteries. This achieves about a 90% reduction in power consumption compared to our conventional products. 【Features】 ■ High-performance integrated sensor that can simultaneously measure up to 6 parameters ■ Improved reliability in low-concentration turbidity range ■ Memory function that can store 200 data points ■ Power-saving design ■ Continuous measurement for approximately 70 hours using two AA alkaline batteries *For more details, please refer to the PDF document or feel free to contact us.

• Water quality/pH measuring device
• Other measuring instruments
• Measurement and Analysis Equipment

All operations are okay with three keys! Depending on the reagent selected, both free chlorine and total chlorine can be measured.

The "DR300" is a pocket residual chlorine meter that can measure both free chlorine and total chlorine depending on the choice of reagents. It is palm-sized and weighs 250g (excluding batteries). It operates on four AA alkaline batteries, allowing for approximately 5000 measurements with low power consumption. With range switching, it can measure from 0.02 to 2.00 mg/L and from 0.1 to 8.0 mg/L. 【Features】 ■ Easy operation ■ Dedicated reagents provided ■ Compact and lightweight ■ Energy-efficient ■ Supports two measurement ranges ■ The carrying case can store the main unit, sample cells, and more *For more details, please refer to the PDF document or feel free to contact us.

• Measurement and Analysis Equipment

Compact and multifunctional! A spectrophotometer that allows anyone to easily and quickly measure various samples.

The "DR3900" is a spectrophotometer that incorporates a variety of functions in a compact device. The main unit has programmed analysis methods for heavy metals, inorganic ions, and organic substances, which can be measured in combination with reagents provided by HACH. In addition to the built-in programs, users can input their own calibration curves. Analysis methods can be set according to the sample. 【Features】 ■ Analysis programs pre-installed (many dedicated reagents available) ■ Supports user-specific analyses ■ Equipped with wavelength scanning function ■ Adopts a color touch panel (7-inch TFT LCD screen) ■ Compatible with a variety of measurement cells *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments
• Measurement and Analysis Equipment

Excellent operability! Using dedicated reagents, various samples can be measured easily and quickly.

The "DR900" is a handheld spectrophotometer that combines an LED light source with a filter. Frequently used analysis programs can be registered as "favorites," which helps improve usability and prevent operational errors. Additionally, it is equipped with a backlight that enhances display visibility. The backlight can be set to stay on continuously or for a specified time, and it can be turned on or off using the backlight key. 【Features】 ■ Supports 26 languages, including Japanese ■ Adopts a favorites menu ■ Features a display with a backlight ■ Comes with pre-installed analysis programs ■ Includes an auto power-off function *For more details, please refer to the PDF document or feel free to contact us.

• Measurement and Analysis Equipment

Supports calibration with PSL standard solution! Compact and lightweight portable turbidity meter.

The "2100Q" is a portable turbidity meter that can be easily and quickly measured in the field. Simply pour the sample into the measuring container and set it on the instrument to display the results digitally. Routine checks can be easily performed with the included standard solution set. Weighing only 530g (excluding batteries), it is compact and lightweight. It comes with a carrying case that stores the main unit, necessary instruments, and the instruction manual. 【Features】 ■ Simply pour the sample into the measuring container and set it on the instrument to display the results digitally ■ Routine checks can be easily performed with the included standard solution set ■ Weighs only 530g (excluding batteries), compact and lightweight ■ Comes with a carrying case that stores the main unit, necessary instruments, and the instruction manual ■ Battery-operated (can also use AA rechargeable nickel-metal hydride batteries) *For more details, please refer to the PDF document or feel free to contact us.

• Water quality/pH measuring device

This portable pH meter is ideal for field measurements with its energy-saving and waterproof design!

This is a popular portable water quality meter that allows for the measurement of "pH," "ORP," and "various ions" through electrode replacement. Its slim design makes it easy to hold, and its energy-efficient and waterproof design ensures safe use in the field. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to take a look.

• Water quality/pH measuring device

This is a portable water quality meter compatible with field measurements of pH, ORP, electrical conductivity, and dissolved oxygen!

This is a multi-type portable water quality meter that allows for the measurement of "pH," "ORP," "electrical conductivity," and "dissolved oxygen" through probe replacement. Available in 2-channel type MM-42DP and 1-channel type MM-41DP! The measurement of dissolved oxygen uses an "optical method"! With a waterproof structure and backlight, it can be safely used in the field. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to take a look. Additionally, you can download materials that clearly explain the measurement methods for pH, electrical conductivity, and dissolved oxygen.

• Water quality/pH measuring device

In recent times, there has been a growing interest in infection control measures and facility hygiene management. Our company offers non-contact sensor products that are recommended for commercial facilities, food factories, and nursing and caregiving facilities. 【Sensors for Automatic Doors】 ● Light Touch Sensor HA-T401 … When you wave your hand in front of the automatic door, the sensor detects the movement and opens or closes the door. This is recommended for making doors with touch switches non-contact. ● Hand Wave Sensor PF-R5, PF-U2, DHS-1 … Opens and closes the automatic door by waving your hand in front of the sensor. ● Foot Switch PF-01S/01D/03S/05 … Opens and closes the automatic door by placing your foot in the opening. 【Access Control System】 ● Face Recognition + Unmanned Temperature Measurement DS Series … Allows for face recognition along with mask detection and body temperature measurement simultaneously. ● Automatic Disinfectant Spray Dispenser PHW-03B … Automatically sprays disinfectant when you wave your hand in front of the sensor. 【Nursing and Care Sensors】 ● Infrared Bed Exit Sensor "Just Place It Pole-kun" … This bed exit sensor is installed next to the bed and notifies via nurse call when the subject enters the detection range. ◎ For more details, please download the catalog or contact us.

To customers considering the introduction of vehicle detection sensors for parking lot construction, design, or management: Are you facing any challenges with current issues or selecting the right sensors for parking management? Hotron offers free materials that explain how to utilize vehicle detection sensors and the benefits of their introduction! ▽ Here is the lineup of materials ◉ Vehicle Detection Sensor Basic Guide This guide focuses on the challenges and solutions in parking lot operations, introducing the overview of vehicle detection sensors. ◉ Key Points for Introducing Vehicle Detection Sensors This material discusses the benefits of introduction based on installation locations and specific challenges. ◉ Case Studies of Vehicle Detection Sensor Implementation This document presents the challenges before implementation and the results after introduction. For more details, please download from our website and check it out. https://www.hotron.co.jp/download/

We will be exhibiting at the only comprehensive and cross-sectional international convention in the marine field in Japan, "Techno-Ocean 2025." In this exhibition, we will introduce a wide range of specialized survey services related to offshore wind power generation projects, including wind and sea condition surveys, O&M, sediment surveys, and fishing ground environmental monitoring. We will also showcase marine surveys and seagrass bed investigations using marine robots such as autonomous surface vehicles (ASVs) and underwater drones, as well as the collection of dead fish in aquaculture operations.

The energy policy promoted by the government has finally made a significant shift from "quantity to quality." The previous large-scale introduction of renewable energy policies relied on inexpensive foreign-made panels, leading to the chaotic installation of mega-solar farms across Japan's land, which created environmental, landscape, and waste issues. As a result, Japan's energy self-sufficiency rate remains at a mere 13%, and even with the advancement of renewable energy, "import dependence" has not been resolved. In light of this reflection, the focus moving forward will be on "developing domestic energy technologies" and promoting "self-consumption type renewable energy." Among these, perovskite solar cells are lightweight, highly efficient, and offer great flexibility in installation, making them a trump card for "decentralized renewable energy" that can be easily retrofitted onto building walls and roofs. Kenneth Energy Development Co., Ltd. is developing a "selective self-consumption solar power generation system" that utilizes domestic panels and perovskite technology. Based on a track record of 83 projects nationwide and a total construction cost of 908.4 billion yen, it supports the industry's "energy independence." Now, renewable energy is entering an era of "security infrastructure."

"Perovskite solar cells" are once again emerging at the center of Japan's renewable energy policy. Mr. Takai has proposed "nurturing domestic technology for renewable energy" as part of energy and industrial policy, causing related stocks to attract attention in the market as the "Takai trade." The background to this is Japan's long-standing dependence on foreign-made panels in its renewable energy structure. While inexpensive imports have supported proliferation, they have also left a "negative legacy" of forest development, disposal risks, and price fluctuations. If this continues, both the land and energy supply will be controlled by foreign entities—this sense of crisis is the trigger for policy change. Perovskite solar cells possess the trifecta of being lightweight, highly efficient, and low-cost, making installation in existing buildings easy. Development is progressing as a domestic technology, and it is expected to become a mainstay for self-consumption power generation in the future. Kenneth Energy Development Co., Ltd. is developing a "next-generation self-consumption solar power system" with an eye on these perovskite cells. With over 8,000 installations nationwide and expertise in subsidy support, they are turning companies' "energy independence" into reality.