This is the material used at the luncheon meeting of the Japanese Aerosol Society (JAAST) held at the Himeji Chamber of Commerce from August 27 to 29 (although it was not displayed on the screen due to system issues). While light scattering particle counters have aspects that are not well-suited for aerosol measurement, they have become essential in the field of contamination control, where in-situ capability, compact size, and ease of use are required. However, they are primarily used in clean rooms, and measuring larger particles in a wider range of environments was previously considered unconventional. We have been using particle plus fine particle counters that can handle high particle concentrations and larger particles in various harsh environments, accumulating various insights. This is a simplified document summarizing some of those insights.

This is the material presented at the manufacturer presentation of the 40th Japanese Aerosol Society.

Basics of Air Filters

Particle Plus is expanding its scope from clean rooms in sterile process monitoring, electronics, precision, and chemicals to large particle detection in batteries, painting, and printing, as well as ultra-high concentration areas such as air pollution monitoring. To make it easier to select models, I have created a reverse lookup list.

"5nm Detection Adiabatic Expansion Type Pulse Mode CPC" Adopts new technology different from conventional CPCs, eliminating the possibility of false counts (nucleation-free) to the utmost extent, and detecting particles as small as 5nm.

Particle counters cater to a variety of applications, from high cleanliness environments in clean rooms to large particle detection and air pollution monitoring systems. There are various options available, including detection particle size, flow rate, number of particle size categories, and corresponding concentrations. We have prepared a list of models.

Clean rooms, of course, as well as machining environments, hospital wards, experimental environments, the Antarctic research vessel "Shirase," and atmospheric observations using drones have all come to be used in various settings.

Particlesplus Incorporated is pleased to announce that it has registered the trademark "Airytechnology Japan" (Registration No. 6328581) as of December 14, 2020. Due to the suspension of business operations by Airytechnology Japan, Inc., Particlesplus Incorporated has completed the trademark registration in Japan for the brand and logo of Airytechnology Japan, which it had previously allowed for use by the company for convenience.

We have published the presentation materials used during the exhibition at the Environmental Society Academic Conference held from December 2 to 3, 2021. We introduce the conditions required for particle counters that are currently in demand. You can download them from the related catalogs below. We hope you will take a moment to read them.

This is the material used in a presentation meeting in Vietnam in March 2025. It includes examples from the optical thin film process and measurements used. The features of the Particle Plus counter, such as its wide concentration range from high purity to ultra-high concentration, long battery life, one-second measurement, and large memory capacity, can be either utilized or wasted depending on how it is used. There are various challenges in aiming for simple high purification in optical processes. Ideas about processes where the counter can be used and know-how to obtain usable data are all present on-site. Please feel free to reach out. We would be happy to collaborate.

The Dascar 200 and Dascar 300 will be discontinued. Discontinuation date: End of March 2022 Replacement products: (1) Dascar 100 Automatically measures foreign particles larger than 100μm in 50μm increments, collected using the Dust Sampler DSW-01 (for Dascar 100). (2) Dascar 100 BLACK Automatically measures foreign particles larger than 100μm in 50μm increments, collected using the Dust Sampler BLACK or the Dust Sampler DSW-01 (for Dascar 100).

An article by Particle Plus Inc. has been featured in a special edition on Shinjuku Gyoen. It introduces topics such as "The journey to starting the business," "Our strengths," "Impressions of starting a business in Shinjuku Gyoen," "Impact of the COVID-19 pandemic," and "Future vision." Please take a look at the related links below. 【Featured Content】 ■ Supporting a close friend's business from Japan: Making particle counters more accessible ■ Selling air purification equipment and consulting: The demand for "CO2 ventilation checkers" has accelerated during the pandemic ■ A company where specialists gather: Providing technical knowledge, experience, tacit knowledge, and know-how ■ A green space away from the hustle and bustle of Shinjuku ■ In a COVID society, "particle movement" is gaining attention, expanding the market as a parameter for indoor air management ■ Clean control is shifting from being for producers to being for consumers!

In the April 2021 issue of Clean Technology, our CEO authored an article titled "Just a Particle Counter, But a Particle Counter." The article introduces the OPC as a cleanliness monitoring device for clean rooms, as well as new scenarios, environments, and suggestions for new uses of OPCs. We invite you to read it. *For more details, please refer to the related catalog or feel free to contact us.*

We would like to inform you that the report on the project "Advancing Music Culture Under COVID-19: Verification Experiment on Droplet Infection Risks in Vocal Music and Choir" was released on December 11, 2020, by the Japan Classical Music Association, the Japan Orchestra Federation, and the Classical Music Park Promotion Council. The experiment was conducted in a high-performance clean room at the New Japan Air Conditioning research facility, aimed at detecting the fine particles generated during singing by professional vocalists. *For detailed materials (report), please visit: https://ebravo.jp/archives/70422 This document reports valuable insights that are not only relevant to us in the aerosol field but also provide very interesting findings regarding new lifestyles under COVID-19, based on experiments using New Japan Air Conditioning's fine particle visualization system and particle counters. We encourage you to take a look.

Due to the business withdrawal of Airy Technology Co., Ltd. (located in Shinagawa, Tokyo) as of December 31, all customer support for the following particle counter products purchased and in use by customers from the company will be inherited by Particle Plus Co., Ltd. (located in Shinjuku, Tokyo). Details: "Airytechnology" brand: ATP311, ATP611, ATP200 series "Airytechnology Japan" brand: ATP5 series, ATP7 series, ATP8 series "Particlesplus" brand: PP5000 series, PP7000 series, PP8000 series Inheritance: In light of this situation, to prevent any inconvenience, trouble, or confusion for our customers and to enhance further support, we, Particle Plus Co., Ltd., will inherit all customer support and fulfill our responsibilities as the original developer and supplier. We will provide comprehensive after-sales services such as calibration, various consultations, and new implementations to ensure complete peace of mind for our customers.

We have decided to welcome Yoshio Otani, former Vice President of Kanazawa University, as an advisor, who has made significant contributions to the development of the industry and left numerous achievements in the world, including filters and clean control, aiming for even greater proactive contributions to society.