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286平方フィート用空気清浄機（Hisoair HA-380）

世界最高の空気清浄機メーカー

空気清浄機は、現代の生活環境において最も必要なものである。空気中のウイルスや病気を引き起こす物質は、適切な空気清浄機によって除去することができる。
2022-10-22
Air purifier, News
シャオミのロゴ

Xiaomi空気清浄機レビュー(評価とテスト)

We have listed all the top Xiaomi air purifiers--including their respective specifications and features--for a more accurate comparison to help you meet your ideal air ...
2022-10-22
Air purifier, Air Purifier Reviews
フィリップス空気清浄機のレビュー

フィリップス空気清浄機のレビュー

フィリップス空気清浄機の売れ筋モデルをチェックして、仕様、機能、性能を比較し、あなたの理想のフィリップス空気清浄機を見つけましょう。
2022-09-01
空気清浄機レビュー, ニュース
アレン

5 Best Alen Breathesmart 空気清浄機 HEPA レビュー

今日、市場には多くの空気清浄機メーカーが存在する。ここでは、人間工学に基づいた高度な空気清浄機を製造しているアレン社を取り上げる。
2022-08-16
空気清浄機レビュー, ニュース
エアフィルターMERV評価とは何か、なぜ重要なのか

エアフィルターMERV評価：それは何ですか、それはなぜ重要ですか？

Not air filters installed in HVAC appliances and air purifiers have the same quality and build. One way of analyzing these filters is through the ...
2022-07-27
ニュース
ホコリに効果的な空気清浄機4選

ホコリに効果的な空気清浄機4選

空気清浄機を購入し、空気ろ過によってきれいな空気を吸うことは重要だ。空気清浄機は、ホコリやその他の汚染物質を除去して空気をきれいにする装置である。
2022-07-27
空気清浄機レビュー, ニュース
4ベストVOC空気清浄機は、最悪の家庭臭を取り除く

4ベストVOC空気清浄機：最悪の家庭臭を取り除く

最高のVOC空気清浄機を使えば、呼吸が楽になり、よく眠れ、より健康的な環境でリラックスできる。最高のVOC空気清浄機を使えば、呼吸が楽になり、よく眠れ、より健康的な環境でくつろぐことができる。
2022-07-27
空気清浄機レビュー, ニュース
ペットの臭いを取り除く、ペット用空気清浄機ベスト4

ペットの臭いを除去するために最適なペット用空気清浄機

Here's the best air purifier for pet owners: the best solution to a clean, and healthier air that reduces illnesses. Despite how much we love ...
2022-07-21
空気清浄機レビュー, ニュース
猫アレルギーを自然に除去する5つの効果的な方法 雑草の臭いを消す：5つの実証済みの方法を試す 家庭内のホルムアルデヒドを除去する方法：効果的な5つの簡単な方法

アレルギーの頭痛を取り除く方法：5つの効果的な治療法

Allergy headaches are annoying and persistent. That's why it is essential to get long-term relief for getting Rid of Allergy Headaches . Read on and ...
2022-07-11
ニュース
料理の臭いを消す方法：試してみたい5つの賢い解決策

料理の臭いを消す方法：試してみたい5つの賢い解決策

Cooking is such a delight. But the mess, especially the smell, that comes after it is a little bit taxing to remove. Fortunately, there are ...
2022-07-11
ニュース
住宅のホルムアルデヒドを除去する方法：効果的な5つの簡単な方法

住宅のホルムアルデヒドを除去する方法：効果的な5つの簡単な方法

Formaldehyde is a type of volatile organic compound (VOC) that is commonly present in residential spaces. Unfortunately, exposure to them can be a bit harmful. ...
2022-07-09
ニュース
モダンな壁の装飾 あなたの壁をモダンにする方法

効果的なペット用空気清浄機4選

You love your pet, but they make you sneeze. Find the best air purifier for pets and stop worrying about odors and allergens. Air purifiers ...
2022-07-08
空気清浄機レビュー, 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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