AVISTA™ MEMBRANE TREATMENT SOLUTIONS

Creating Shared Value Through RO System Optimisation

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Avista, a global brand of Kurita for membrane treatment solutions

Avista is a leading global brand recognized by operators, system designers, membrane manufacturers and equipment suppliers for application expertise and innovative membrane solutions.

Kurita offers local support services to optimize membrane system performance and a wide range of membrane treatment solutions, including chemicals, equipment, and services.

We take the continuous improvement of your plant to heart. Our aim is to support you in reducing water and chemical consumption while also focusing on environmental sustainability. 

Improve membrane system performance and reliability

Your path to membrane system optimization

Reduce Operational Costs

Increase plant productivity

Maximize membrane life cycle

Optimize system performance

PRODUCTS

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SERVICES

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Products

Our comprehensive product range enables Kurita to specifically target contaminants that would otherwise impact system operation.

Kurita experts provide the specialist advice needed to ensure you get the right products for your system.

Kuriverter® IK Slime Control Agent

Highly effective, biofilm control agent specifically designed with the unique ability to deeply penetrate and remove foulant from the surface while inhibiting future growth. It is the world's first biocide that is NSF and Halal certified.
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Avista VT™ Antiscalants

The inhibition and dispersant properties of Avista VT- products help extend system run times, reduce cleaning frequency, and increase the productive life of RO elements. NSF and Halal certifed.
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RoClean™ (RO Cleaners)

Efficient and cost-effective removal of many different foulant and scales. All products are low foaming and membrane compatible. NSF and Halal certified.
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RoQuest™ Coagulants

Improve the efficiency of multimedia filtration (MMF) equipment. Studies show that a nominal dosage of a RoQuest coagulant may allow MMF equipment to remove over 97% of particulates.
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AvistaClean™ (UF/NF Cleaners)

Advanced UF and NF membrane cleaners that effectively remove fouling, improve system efficiency, and support reliable water treatment operations.
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OSCAR® (Off-Site Cleaning and Restoration)

Off-site cleaning and restoration service that helps recover RO membrane productivity and optimize system performance.
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Services

Our reverse osmosis expertise enables us to select the right biocides, antiscalants, and cleaning chemicals. With a thorough understanding of your plant’s design and functionality, we ensure efficient operation while prioritising cost-effectiveness and environmental sustainability.

Avista™ AdvisorCi™ is a proprietary chemical dosing software with complex ion technology to maximize system recovery for even the most challenging applications.


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Avista addresses these challenges with advanced membrane autopsies utilizing cutting-edge Avista Chromatic Elemental Imaging℠ (CEI℠), site audits, and pilot studies to identify and resolve fouling causes. This approach enhances system performance and extends membrane lifespan.


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OSCAR offers comprehensive membrane cleaning and restoration for RO systems by testing and deep cleaning membranes to ensure optimal efficiency and extended lifespan. Each membrane element is individually tested, thoroughly cleaned, and tracked against manufacturer specifications. Only elements that cannot be restored are disposed of.

OSCAR services are available in Indonesia, Malaysia, Singapore, and Thailand.


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Contact Us

Tetsuya Teramoto

Tetsuya Teramoto

Managing Director, Kurita R&D Asia Pte. Ltd.

Mr. Tetsuya Teramoto has served as Managing Director of Kurita R&D Asia Pte. Ltd. since 2024. Since joining Kurita Water Industries in 2006, he has accumulated nearly 20 years of experience in technology strategy, research and development, and business innovation, including investments in startup companies.

Throughout his career, Mr. Teramoto has led development projects across Japan, China, and the United States. Since 2023, he has been based in Singapore, where he has focused on accelerating technology development aligned with ASEAN market needs, strengthening partnerships with startups, universities, and other ecosystem stakeholders, and driving the creation of emerging solutions that contribute to the Kurita Group’s growth.

Mr. Teramoto holds a Master’s degree in Biosystem Studies from the University of Tsukuba, Japan. Leveraging his expertise in both research and development and business strategy, he is committed to driving innovation that transforms technology into business value and sustainable growth opportunities.

Zackariya

Mohamad Zackariya

Managing Director, Kurita (Singapore) Pte. Ltd.

Mr. Mohamad Zackariya has served as Managing Director of Kurita (Singapore) Pte. Ltd. since April 2023, capping a distinguished career of more than 25 years with the company. A Singaporean national, he joined Kurita Singapore in 1998 as a Design Engineer in the Plant Division and progressed through a series of leadership roles, including Manager, General Manager, Director, and ultimately Managing Director. His extensive experience has played a key role in strengthening the company’s technical capabilities, customer partnerships, and business growth across the region.

Holding a Bachelor’s Degree in Mechanical Engineering from University of Moratuwa, Sri Lanka and a Post Graduate Diploma in Business Management from Singapore Institute of Management, Mr. Zackariya combines deep technical expertise with strong business leadership. He is committed to advancing Kurita’s mission of creating shared value through innovation, operational excellence, and sustainable water solutions that support customers and industries throughout Southeast Asia.

Masato Hirai

Masato Hirai

Chief Administration Officer, ASEAN Regional

Mr. Masato Hirai serves as ASEAN Regional Chief Administration Officer at Kurita, a role he has held since 2023. With more than 25 years of experience in corporate administration, financial planning, and business operations, he brings extensive expertise in supporting organizational growth, strengthening governance, and driving operational excellence across international business environments.

Mr. Hirai joined Kurita Group in 2021 and has held leadership positions in Japan, Malaysia, Thailand, and Indonesia. Throughout his career, he has been responsible for financial planning and analysis, business administration, and the management of cross-functional corporate operations. He has also supported overseas subsidiaries across Asia, Europe, and North America, contributing to the development of effective business practices and strong stakeholder relationships. Prior to joining Kurita, he held management and planning roles at several multinational manufacturing and chemical companies.

Known for his strategic vision and collaborative approach to leadership, Mr. Hirai is committed to strengthening organizational performance and creating long-term sustainable growth. Currently based in Indonesia, he leverages extensive international experience to support Kurita’s regional development and business transformation initiatives. He graduated from Hitotsubashi University, Japan, with a Bachelor of Social Sciences degree in 1999.

Toshiaki Nakai

Toshiaki Nakai

General Director, Kurita-GK Vietnam Co. Ltd.

Mr. Toshiaki Nakai serves as General Director of Kurita-GK Vietnam Co. Ltd., a position he has held since April 2026. With more than 20 years of experience at Kurita, he has developed extensive expertise in water treatment solutions, business development, and customer partnership management across a wide range of industrial sectors, including general manufacturing, oil refining, and steel production.

Since joining Kurita Water Industries Ltd. in 2004 as a Sales Engineer, Mr. Nakai has supported customers in optimizing water use, enhancing operational efficiency, and advancing sustainability initiatives. He later expanded his leadership responsibilities in Indonesia, serving as General Manager of PT. Kurita Indonesia from 2022 to 2025 and Senior General Manager from 2025 to 2026, where he contributed to the company’s growth and strengthened its market presence.

Mr. Nakai holds a Bachelor’s Degree in Agriculture from Kobe University, Japan, graduating in 2004.

Toshinori Maema

Toshinori Maema

President Director, P.T. Kurita Indonesia

Mr. Toshinori Maema has served as President Director of PT. Kurita Indonesia since 2025, bringing over 20 years of experience in sales, marketing, technical, and business leadership within the water treatment industry. Having worked across Asia, Europe, and North America, he offers a global perspective on customer engagement, organizational development, and sustainable business growth.

Since joining the Kurita Group in 2004, Mr. Maema has held leadership positions at various Kurita companies in China, Europe, Japan, and Avista Technologies in the United States, where he served as President & CEO from 2023 to 2025 to focus on global initiatives to expand the Kurita reverse osmosis chemicals business. With more than half of his career spent outside Japan, he has developed extensive experience in leading multicultural teams and driving business growth across diverse markets.

Mr. Maema holds a degree in Biochemistry from Aoyama Gakuin University and completed the Leadership on Change program at IESE Business School. Fluent in Japanese, English, and Chinese, with elementary proficiency in German, he is passionate about fostering collaboration across cultures. Outside of work, he enjoys a wide range of sports, including golf, baseball, soccer, and basketball.