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壁掛けの空気清浄機と大きな窓のある明るいモダンな教室

学校や教室に最適な空気清浄機は？

Choosing the right air purifier for schools is crucial for maintaining a healthy learning environment. HisoAir models excel with their advanced filtration systems, quiet operation, ...
2024-11-20
ニュース
明るいリビングルームにモダンな空気清浄機

カビアレルギー対策に最適な空気清浄機とは？

Mold allergies can significantly impact health, causing sneezing and respiratory issues. To combat these allergies, it's crucial to choose air purifiers equipped with True HEPA ...
2024-11-20
ニュース
大きな窓のある明るいリビングルームに設置された洗練された空気清浄機

米国で空気清浄機ブランドを立ち上げるにはどれくらいの投資が必要か？

Starting an air purifier brand in the US involves significant investment ranging from $50,000 to $100,000. This budget covers essential areas such as product development, ...
2024-11-20
ニュース
世界貿易地図と関税を備えた最新の空気清浄機

中国から米国へ空気清浄機を輸入する際の関税は？

Currently, importing air purifiers from China to the US incurs no tariffs until May 30, 2025. However, potential future tariffs could reach up to 60%, ...
2024-11-17
ニュース
明るく開放的なオフィスの壁面に設置されたモダンな空気清浄機。

業務用空気清浄機で考慮すべき主な機能とは？

Choosing the right commercial air purifier is crucial for maintaining a healthy environment in workplaces like offices, gyms, and hotels. Key features to consider include ...
2024-11-17
ニュース
空気清浄機と空調システムを備えたモダンなリビングルーム

空気清浄機と従来の空調システム：空気清浄機と従来のHVACシステム？

空気濾過のために空気清浄機とHVACシステムのどちらを選ぶかは難しいことだ。HEPAフィルターを搭載した空気清浄機は、小さなアレルゲンや汚染物質を効果的に捕捉します。
2024-11-17
ニュース
HEPAフィルターとカーボンフィルターを並べてクローズアップ

空気清浄機のフィルターの寿命を延ばすには？

空気清浄機のフィルターを長持ちさせるには、定期的なメンテナンスが欠かせません。プレフィルターのホコリを掃除機で吸い取ると、寿命が大幅に延びます。また ...
2024-11-17
ニュース
モダンな空気清浄機が、グリーンのあるミニマルな部屋に置かれている。

信頼できる空気清浄機メーカーを選ぶ際に考慮すべき5つのポイントとは？

清潔で健康的な空気を確保するためには、適切な空気清浄機メーカーを選ぶことが不可欠です。このガイドでは、空気清浄技術における専門知識、カスタマイズ性、そして空気清浄機メーカーを選ぶ際に重要な5つの要素について概説しています。
2024-11-17
ニュース
HisoAir-HA1223-卓上型空気清浄機

カスタム空気清浄機の作り方：OEMサービスでコンセプトから市場へ

競争の激しい今日の空気清浄機市場において、カスタム空気清浄機は、ユニークな特徴、カスタマイズされたデザイン、特定の機能性をアピールすることで、ブランドの差別化を図ることができます。
2024-11-15
ニュース
歯科クリニックの空気環境を改善するiq空気清浄機

なぜIQAir空気清浄機は高価なのか？

IQAir空気清浄機を検討する際、多くの潜在的な購入者はその価格に驚かされることが多い。しかし、その価格にはIQAir独自の機能が反映されている。
2024-11-15
ニュース
HEPAフィルターとカーボンフィルターを並べてクローズアップ

HEPAフィルターとカーボンフィルター：どちらが空気の質を高めるか？

室内の空気をよりクリーンにするためには、HEPAフィルターとカーボンフィルターのどちらを選ぶかが重要だ。HEPAフィルターは、微細なゴミを捕捉する能力で知られている。
2024-11-15
ニュース
ホコリを減らすリビングルームの空気清浄機

空気清浄機のホコリ削減効果は？

自宅の空気をよりクリーンにしようと探求しているうちに、空気清浄機に関する相反する情報に囲まれていることに気づいた。空気清浄機の多くは、空気を清浄化することで、よりクリーンな空気を作り出すと主張している。
2024-11-15
ニュース
Contaminant Engineering•3 min read

PFAS Water Filtration Technologies Explained: Carbon, Resin & RO

Key Takeaway:

PFAS reduction depends on the specific compounds present, treatment media, contact time, water chemistry, and system design. Activated carbon, ion exchange, and Reverse Osmosis address PFAS through different mechanisms.

PFAS are a large family of persistent fluorinated compounds that can occur in drinking-water supplies. Their treatment behavior varies significantly by molecular structure, chain length, functional group, concentration, and the chemistry of the source water.

Granular Activated Carbon (GAC) removes PFAS primarily through adsorption. It is generally more effective for many longer-chain PFAS, while shorter-chain compounds tend to break through more quickly. Carbon performance depends on media properties, Empty Bed Contact Time (EBCT), competing organic matter, loading, and replacement frequency.

Ion-exchange resins use charged functional sites to capture many PFAS compounds. Properly selected anion-exchange media can provide high capacity and may perform better than conventional activated carbon for some shorter-chain PFAS, although performance still depends on water chemistry and competing ions.

Reverse Osmosis (RO) uses membrane separation rather than adsorption. Properly designed RO systems can provide broad reduction across many PFAS compounds as well as dissolved salts and other contaminants. Unlike carbon or resin, however, RO also produces a concentrate stream that must be managed.

No single technology should be selected from a PFAS label alone. System design should consider which PFAS compounds are present, their concentrations, required reduction targets, flow rate, media life, and the applicable third-party certification or validation requirements.

HisoAir Water Technical Series
Product Discovery•3 min read

How to Choose an Under-Sink Water Purifier for Modern Kitchens

Key Takeaway:

Match the treatment technology to your water quality first, then evaluate cabinet space, faucet configuration, flow rate, drain and power requirements, and filter replacement needs.

Choosing an under-sink water purifier starts with water chemistry. Carbon filtration is well suited to chlorine, taste, odor, and many organic contaminants, while Reverse Osmosis is more appropriate when dissolved salts, fluoride, nitrates, or broader dissolved contaminants need to be reduced.

For compact kitchens, tankless RO systems eliminate the conventional storage tank and can significantly reduce the space required under the sink. However, membrane capacity stated in GPD does not directly equal faucet flow. When comparing systems, check the actual dispensing flow rate, inlet-pressure requirement, recovery ratio, and whether a booster pump is required.

Installation architecture also matters. Many RO systems require a drain connection, electrical power, and either a dedicated drinking-water faucet or a compatible multi-function faucet. High-flow carbon systems can often connect directly to the existing cold-water line with a simpler installation, but pressure drop and available faucet flow should still be verified.

RO also removes much of the naturally occurring dissolved mineral content. Where taste or mineral balance is a priority, a post-RO remineralization stage can be added. Filter life should be evaluated by both rated capacity and local water quality rather than replacement time alone.

The right system is therefore not simply the smallest or highest-GPD model. It is the configuration that matches the target contaminants, available cabinet space, desired faucet setup, peak dispensing demand, and maintenance expectations.

HisoAir Water Technical Series
Water Quality•2 min read

What Does TDS Mean in Drinking Water? Measurement vs Contaminant Reality

Key Takeaway:

A TDS meter estimates the overall concentration of dissolved ionic substances from electrical conductivity. It cannot identify specific contaminants or determine whether water is chemically safe.

Total Dissolved Solids (TDS) refers to the combined concentration of dissolved substances in water. Most handheld TDS meters do not measure TDS directly. Instead, they measure electrical conductivity (EC) and convert that reading into an estimated parts-per-million (ppm) value.

This means a TDS reading can indicate how much dissolved ionic material is present, but not what that material actually is. Calcium, magnesium, sodium, nitrates, and other dissolved ions can all contribute to conductivity, yet a simple TDS meter cannot distinguish between them.

TDS meters are also not suitable for detecting trace contaminants such as PFAS, many VOCs, pesticides, pharmaceuticals, or disinfection byproducts. These substances may be present at concentrations far below the level needed to noticeably change electrical conductivity.

A low TDS reading therefore does not guarantee safe drinking water, and a higher TDS reading does not automatically indicate contamination. Water-treatment decisions should be based on laboratory testing for specific contaminants of concern rather than TDS alone.

HisoAir Water Technical Series
Technology Selection•2 min read

RO vs UF Water Filtration: Understanding Pore Sizes & Dissolved Minerals

Key Takeaway:

Ultrafiltration can reduce bacteria, turbidity, and suspended particles while retaining most naturally occurring dissolved minerals. Reverse Osmosis provides much broader reduction of dissolved salts and smaller contaminants.

Ultrafiltration (UF) typically uses hollow-fiber membranes with pore sizes in the approximate 0.01–0.1 micron range. These membranes physically retain turbidity, suspended solids, colloids, and many microorganisms while allowing dissolved minerals and salts to remain in the water.

Reverse Osmosis (RO) operates at a much finer separation level. Unlike UF, RO can substantially reduce dissolved ions such as sodium, calcium, fluoride, nitrates, and other contributors to total dissolved solids (TDS). This makes RO more suitable when dissolved-salt reduction is a primary treatment objective.

UF generally requires less system pressure and produces little or no continuous concentrate stream in many point-of-use configurations. RO typically requires greater pressure and produces a reject-water stream, but delivers broader contaminant reduction.

For water with acceptable TDS and mineral content, UF can be a simpler mineral-retaining treatment option. Where dissolved salts, fluoride, nitrates, or broader dissolved contaminants are a concern, RO is generally the more appropriate technology.

HisoAir Water Technical Series
Technology Selection•4 min read

Carbon Block vs Reverse Osmosis: Which Fits Your Need?

Key Takeaway:

Choose RO for dissolved inorganic salts and heavy metals; choose Carbon Block for chemical taste/odor, no wastewater, and high line-pressure flow.

Reverse Osmosis (RO) and Carbon Block filtration represent two fundamentally different treatment methods: membrane separation and adsorption. Understanding these differences helps determine which technology is better suited to a specific water-quality requirement.

Reverse Osmosis uses a semi-permeable membrane with pore sizes of approximately 0.0001 microns. It can significantly reduce dissolved inorganic contaminants such as TDS, fluoride, nitrates, and certain heavy metals. Because water must be forced through the membrane, RO systems require sufficient pressure or a booster pump and generate a concentrated wastewater stream.

Carbon Block filtration relies primarily on adsorption through compressed activated carbon, commonly with nominal pore sizes around 0.5–5 microns. It is highly effective for chlorine, chloramines, VOCs, taste, and odor, while allowing substantially higher direct-flow rates without producing wastewater.

From an operating perspective, Carbon Block systems are generally simpler, require less energy, and avoid the water loss associated with RO. RO involves higher system complexity and operating cost, but provides substantially broader reduction of dissolved contaminants that Carbon Block alone cannot address.

HisoAir Water Technical Series

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