サイエンス Product Lineup

Science Co., Ltd., the operating company of "ofurosekkei.com," is a manufacturer of filtration systems. We have a proven track record of proposing our products to many customers and facilities. Utilizing this know-how, we accept inquiries from various industries (users, developers, design offices, general contractors, and subcontractors). "ofurosekkei.com" is a site we want those considering new construction or renovation (remodeling or renovation) of bathtubs and bathrooms to see. 【Examples of Consultations】 ◆ From users, inquiries about functionality (silky baths, carbonated springs, bubble baths, jet baths), bathtub materials (cypress bathtubs, ceramic bathtubs), and energy cost reduction. ◆ From developers, inquiries about combinations of saunas and cold baths, open-air baths, and private baths. ◆ From design offices, inquiries about filtration circulation systems, design cooperation, and hygiene management (such as Legionella bacteria). ◆ From general contractors and subcontractors, inquiries about easy installation and cost reduction. We provide a wealth of information that can help with the points customers want to focus on and case studies. We will produce tailored solutions from scratch to meet customer needs. Please feel free to consult with us.

The "Bastime 24 KJO Series" is a physical and chemical filtration system that not only filters but also maintains warmth with just one unit. To ensure a clean and safe bathing environment at all times, it powerfully shuts out bacterial growth using the forces of physics and chemistry, delivering the comfort of the "first bath" anytime with its excellent purification capabilities. Our "Bastime 24" was the first genuine 24-hour bath system released for home use. It continues to be a beloved product, trusted and proven over time. 【Features】 ■ Filtration and heating possible with one unit (electric heater) ■ All-in-one functionality ■ Outdoor installation keeps the bathroom tidy ■ Uses original activated stones for a warm body ■ AJ type features a powerful jet (built-in air compressor) *For more details, please refer to the PDF materials or feel free to contact us.

Perfect for such concerns: ★ I installed without a filtration system, but the water and utility costs and cleaning efforts are more than I imagined. I want to install a filtration system, but I can't attach the circulation hardware. ★ There's a water leak from the buried pipes, and I don't know what to do. Is a major renovation of the bathtub the only option...? In such cases, you can use the "adhesive nozzle" to utilize the existing bathtub as it is.

It can be directly connected to the pump's phase flange with a side male thread processing. The full acrylic cover allows for checking the internal condition.

The automatic backwashing sand filter device "PRT Series" supports pressure sensor-based water level control for all models! It is very hygienic as there is no stagnant water like in conventional electrode-type water level gauge piping. Water level settings can be configured via touch panel operation. There is no need to cut electrode rods like in electrode-type systems. If you want to change the water level settings after starting operation, it can be easily modified.

The heating device bus keeper "SHS series" supports pressure sensor-based water level control for all models! With the controller operation, you can fully automate water filling and heat retention with just one button. It is very hygienic as there is no stagnant water like in traditional electrode-type water level measurement piping.

This is recommended for customers who have difficulty adjusting the chemical injection amount due to changes in chlorine concentration caused by surrounding temperature and variations in the number of bathers during normal and busy periods.

We are seeing an increase in inquiries about replacements due to the withdrawal or bankruptcy of the 24-hour bath manufacturers currently in use! As a long-established manufacturer that first launched home-use 24-hour baths, we can provide consultation at our sales contract stores nationwide! To ensure a consistently clean and safe bathing environment, we effectively shut out bacterial growth using the power of physics and chemistry, delivering the comfort of the "first bath" at any time with our excellent purification capabilities. 【Features】 ■ Filtration and heating possible with one unit (electric heater) ■ All-in-one functionality ■ Outdoor installation keeps the bathroom tidy ■ Uses original activated stones for a warm body ■ AJ type features a powerful jet (built-in air compressor) * Some regions may not be supported * Indoor models (types placed on the edge of the bathtub) are not supported * For more details, please refer to the PDF materials or feel free to contact us.

Due to the withdrawal or bankruptcy of the current filtration device manufacturers you are using, there has been an increase in inquiries about replacements! If you need advice, please contact our company, a specialist manufacturer of bathtub filtration devices! The "Bastime 24 KJO Series" is a physical and chemical filtration system that not only filters but also maintains warmth with just one unit. To ensure a consistently clean and safe bathing environment, it powerfully shuts out bacterial growth using both physical and chemical methods, delivering the comfort of the "best bath" at any time with its excellent purification capabilities. Our "Bastime 24" was the first to be released as a full-fledged 24-hour bath for home use. It continues to be a beloved product, trusted and proven over time. 【Features】 ■ Capable of filtration and heating with one unit (electric heater) ■ Small and compact ■ Can be controlled in conjunction with a chemical dosing device ■ All-in-one functionality ■ Can be installed outdoors, keeping the bathroom tidy ■ Uses original activated stones for a warming effect on the body * For more details, please refer to the PDF materials or feel free to contact us. We can also accommodate inquiries regarding the replacement of the packaged automatic backwash sand filtration device "Rivertech PRT Series."

● System consideration/selection Filtration equipment (in-house product) - Material judgment based on hot bath, cold bath, and hot spring water quality Heat source equipment (boiler, water heater, cooling chiller) Jet equipment Vibration equipment Carbonated water equipment Microbubble equipment Automatic water replenishment system (water level sensor, mixing valve, electric valve) Chemical injection equipment Sterilization equipment (ozone, ultraviolet, etc.) Circulation hardware ● Running cost calculation sheet/LCC calculation sheet preparation ● Floor plot diagram preparation Please feel free to consult us regarding planning and design work related to bathing facilities and bathtub-related equipment, centered around our in-house product, the bathtub filtration system.

The "Buskeeper SHS Series" is a bathtub insulation device that can be equipped with a centralized management system capable of monitoring and operating up to 99 units via a network, either wirelessly or wired, as an option. It can be operated through the control panel, remote control, or a PC with centralized management software installed! It supports both individual and batch operations! Utilizing the know-how of a filtration equipment manufacturer, it features an electric heater with a built-in circulation pump. It allows for effective temperature management of large bathtubs. It also enables water level control of the bathtub water, making full automation possible. Additionally, it can efficiently utilize limited hot spring sources for simple springs. Since it uses a continuous flow of hot spring water, the composition remains unchanged, and only heating is displayed. 【Features】 ■ Electric heater type with built-in pump, leveraging the know-how of a filtration equipment manufacturer ■ Compact design that does not require much space ■ Standard support for hot springs (simple springs) ■ Compatible with centralized management system (optional) *For more details, please refer to the PDF materials or feel free to contact us.

The "Buskeeper SHS Series" is a bathtub heating device. It features an electric heater system with a built-in circulation pump, utilizing the know-how of a filtration equipment manufacturer. It allows for temperature management of large bathtubs. It also enables water level control of the bathtub, making full automation possible. Additionally, it can efficiently utilize limited hot spring sources, as it allows for continuous flow of hot spring water, maintaining the original components and only displaying heating. 【Features】 ■ Electric heater system with built-in pump, leveraging the expertise of a filtration equipment manufacturer ■ Compact design that does not require much space ■ Standard compatibility with hot springs (simple springs) ■ Compatible with centralized management systems (optional) *For more details, please refer to the PDF document or feel free to contact us.

The "Bastime 24" is the first cartridge filter-type bathtub filtration device released as a full-fledged bathtub filtration system by our company. The compact "Bastime 24," which packages all the necessary functions for bathtub filtration, has become widely popular with many similar products available. However, due to the withdrawal and bankruptcy of manufacturers, there has been an increase in inquiries about replacements! It is important to consider the best bathtub filtration system (cartridge type, sand filtration type, or just a heating device, etc.) based on installation space, operational methods, bathtub environment (indoor/outdoor), and the fuel used for bathtub heating (electricity/gas/kero/heavy oil), taking into account the initial and running costs. Since regulations related to hygiene management vary by region and industry, please contact our company, a specialist manufacturer of bathtub filtration devices, for consultation! 【Features】 'Bastime 24' KJO Series ■ Filtration and heating possible with one unit ■ Small and compact ■ Can be controlled in conjunction with a chemical dosing device ■ Can be installed outdoors, keeping the bathroom tidy ■ Perfect for large bathtubs in private homes * Proposals for automatic backwashing sand filtration type PRT series and bathtub heating device SHS series will be made in accordance with relevant laws and regulations in your region and industry.

We are publishing examples of our involvement in many new constructions and renovations (remodeling and renovations) of baths, bathtubs, and bathrooms as a filtration device manufacturer! "I want to install a large bath, sauna, and cold bath at home." "I want to be able to fill the bath with the push of a button and enjoy a warm bath or cold bath anytime." "I want a chiller for the cold bath to be stored in a limited space." "I was turned down by other companies, but I want to stay within budget." In response to these requests, we are currently showcasing examples of custom jacuzzi baths, cold baths, and saunas installed in prime locations in Tokyo! *For more details, please download the PDF or contact us.

We will utilize our experience as a filtration device manufacturer involved in many new constructions and renovations (remodeling and renovations) of baths, bathtubs, and bathrooms to make proposals. "Private open-air baths through guest room renovations" - Bathtub filtration devices - Heat retention systems - Pressure-type water level control - Bathtub amusement equipment such as jets, vibrators, carbonated baths, and silky baths "Water baths for saunas" - Bathtub filtration devices - Cooling heat source systems (chillers) - Pressure-type water level control * We can accommodate everything from small water baths for private saunas to standard water baths. In the current COVID-19 pandemic, there is a rapidly increasing demand to convert communal bathing facilities into private spaces! "I want to renovate to install open-air baths in each guest room to create private spaces and add high value." "I want to open a private sauna, so I want to install multiple small water baths."

"Water bath for sauna" - Bathtub filtration system - Cooling heat source system (chiller) - Pressure-type water level control ● Reasons to recommend a filtration system for the water bath The water bath has a low temperature, making it easy for dirt such as sweat and sebum to coagulate, resulting in cloudiness. Without a filtration system, the water will quickly become cloudy, necessitating frequent replacement and cleaning of the bathwater. This leads to increased labor for cleaning and higher water bills. The tap water temperature varies with the seasons. Even in standard regions, there can be a temperature variation from 9°C in winter to 30°C in summer. The equipment needed to keep the supply water cold and constant incurs significant initial costs, installation space requirements, and ongoing running costs, which is similar for cold water showers. The initial costs of installing a filtration system are not much different. When a filtration system is installed, it only needs to cool the water that has warmed up from bathing, so the actual running costs are relatively low. Additionally, since the water bill only requires replenishing the amount that evaporates or is lost from the body after initially filling the bath, it can also help reduce water costs.

Conventional heat pumps could not accommodate the water quality of baths, so they used to create high-temperature hot water with heat pumps and maintain the bath's temperature through a heat exchanger. The new product now allows for direct heating of the circulating water in the bath through a combination of a newly developed heat exchanger unit and a heat pump unit. With the realization of direct heating, it achieves energy-efficient operation, and since a buffer tank and circulation pump are no longer necessary, it can be introduced at a lower cost and in a more compact form compared to conventional systems.

Name: Cooltime24 Release Date: April 2, 2025 Features: - Can be installed indoors or outdoors, with a simple system at a low cost. Compact and small design. - For all models, just set the temperature and start automatic operation. 【Product Lineup】 Cooltime24 Automatic Backwash Series Recommended for facilities (regions) where backwashing is essential and for facilities with a high number of bathers. Cooltime24 Cartridge Filter Series Recommended for facilities with a low number of bathers and for privately owned saunas.

This is a filtration system that incorporates all the necessary equipment into a compact package, making it easy to install in small to medium-sized bathtubs. 【Features】 ■Standard Specifications - Compatible with bathtub capacities up to 15 tons - Very compact package type, suitable for outdoor use for bathtubs up to 5.5 tons - Easy operation with a touch panel - Water level control compatible with electrode type and pressure sensor type - Electric heater specifications included as standard, allowing for heat retention without a separate heat source - Excellent construction efficiency with a unit type design - All models come standard with stainless steel pumps and stainless steel heaters (electric heater specifications) to accommodate chlorine management for high-concentration chlorine disinfection in bathtubs. *Only the PRT-15000 type uses a cast iron pump ■Hot Spring Specifications (customized according to hot spring water quality) - Compatible with bathtub capacities up to 15 tons - Very compact package type, suitable for outdoor use for bathtubs up to 5.5 tons - Made with corrosion-resistant materials tailored to the hot spring water quality Example: resin or titanium materials - Electric heater specifications may also be available depending on the hot spring water quality - Excellent construction efficiency with a unit type design *Please consult for hot spring specifications. A hot spring analysis report will be required.

This catalog is a comprehensive catalog of circulation filtration devices handled by Science. Unlike conventional filtration devices that only keep water clean, Science's high-performance circulation filtration devices are characterized by their consideration for the environment and health, as well as energy-saving, labor-saving, and space-saving features. The bathtub heating devices come in a compact and easy-to-install electric heater built-in type, as well as a heat pump type that reduces both heating costs and CO₂ emissions. We can flexibly respond to anything related to water. We offer the automatic backwashing sand filtration device "PRT Series," the filter filtration device "KJO Series," the bathtub heating heater "SHS Series," and the bathtub heating heat pump "YHP." For anything related to bathtub filtration devices, please feel free to contact Science, the specialized manufacturer. *For more details, please refer to the PDF materials or feel free to contact us.

The "Bubbling Time 24 KJO Series" is a physical filtration system that not only filters but also maintains temperature with just one unit. Equipped with a special filter that provides powerful purification capabilities, all necessary functions are firmly integrated into the device. The home-use KJO-300AJ features a powerful jet air function that enhances the massage effect. Our "Bubbling Time 24" was the first genuine 24-hour bath released for home use. It continues to be a beloved product, trusted and proven over time. 【Features】 ■ Filtration and temperature maintenance possible with one unit (electric heater) ■ Small and compact ■ Can be controlled in conjunction with a chemical dosing device ■ All-in-one functionality ■ Can be installed outdoors, keeping the bathroom tidy ■ Uses original activated stones for a warm body *For more details, please refer to the PDF materials or feel free to contact us.

Renewal & New Product Highlights ■【Common to All Series】Diverse Heat Retention and Heating System Lineup Available options: H specification (electric heater) | E specification (heat exchanger) | S specification (only heating signal output) The S specification easily integrates with the bath tub heat pump "Basuhipon" The E specification is a unique specification exclusive to the PRT series ■【Common to All Series】High Corrosion Resistance for Peace of Mind Supports chlorine management for high-concentration chlorine disinfection of bathtubs All models come standard with stainless steel pumps and stainless steel heaters (electric heater specification) Achieves long-term stable operation PRT Series Exclusive Features ■ Automatic Chlorine Concentration Adjuster (optional) integration • Logs chlorine concentration data to an SD card • Displays a graph of chlorine concentration changes over the last 24 hours on the touch panel ■ PRT-800【Compact Bathtub Filtration Device】 Target bathtub: up to 800L | New lineup in the PRT series Further enhances capability in the compact bathtub filtration device market ■ KJO-300【Compact Commercial Filtration Device】 Previously: for home use only → Now available for commercial use as well Realizes compatibility with filtration devices for small-scale commercial facilities Highlight: Strategic expansion of the lineup leveraging strengths in compact bathtub filtration devices

■ Why was the change to stainless steel pumps made? Background: Stricter hygiene management standards from health authorities In recent years, the hygiene management standards set by health authorities have become stricter, leading to an increase in areas where high-concentration chlorine disinfection is necessary. Traditional cast iron pumps pose a risk of rusting in high-concentration chlorine environments, presenting challenges for the long-term stable operation of equipment. ■ Three benefits of stainless steel pumps Benefit (1) Complete compatibility with high-concentration chlorine disinfection The stainless steel material eliminates concerns about rust and meets the strict standards of health authorities. It enables long-term stable operation even in high-concentration chlorine environments. Benefit (2) Condensation countermeasures in water bath filtration systems When used in water baths, the significant temperature difference between the low water temperature and the pump installation environment can lead to condensation on the surface of cast iron pumps, resulting in rust and deterioration risks. Stainless steel pumps eliminate concerns about rust from condensation, making them safe for use in water baths. Benefit (3) Improved durability Stainless steel has superior corrosion resistance compared to cast iron, allowing for stable performance over long periods. Its longer lifespan reduces the frequency of replacements and maintenance, contributing to lower running costs.

■ What is the Chlorine Concentration Log Option? This is an advanced feature exclusive to the PRT series (model: PRT-○○○○CL-C). It incorporates an automatic chlorine concentration controller, enabling the automation of chlorine management and accurate record-keeping. ■ Benefits of Implementation and Three Features With the strict enforcement of hygiene management standards by health authorities, there is a strong demand for accurate records and a reduction in management burdens. 1. Reduction of Management Tasks: With automatic chlorine concentration adjustment, fine-tuning of chemical injection amounts is no longer necessary. The set concentration is automatically maintained at a constant level, significantly reducing the effort required for on-site management. 2. Automatic Saving to SD Card: Concentration data is recorded and saved to an SD card. This serves as proof of appropriate hygiene management, facilitating smooth responses during regular reports to health authorities and inspections. 3. 24-Hour Graph Display: Changes over the last 24 hours are visualized on a touch panel. This makes it easier to detect sudden fluctuations or abnormalities in chlorine concentration and to analyze trends, contributing to accident prevention. 【Important】Compliance with Regulations This feature complements management; however, the legal obligations for "daily measurement of free residual chlorine concentration" and "retention of records for three years" are still required separately. Please utilize it as a support tool for improving operational efficiency.