气相过滤市场 - 全球产业规模、份额、趋势、机会及预测（按类型、滤材、最终用户、地区和竞争格局划分，2021-2031年）

全球气相过滤市场预计将从 2025 年的 59.4 亿美元成长到 2031 年的 80.1 亿美元，复合年增长率为 5.11%。

此製程利用活性碳或浸渍氧化铝等吸附介质，从气流中去除挥发性有机化合物和腐蚀性气体等气态污染物。推动该产业成长的主要因素是日益严格的工业排放环境标准，以及全球为确保室内空气品质、保护人类健康和精密电子设备所做的努力。强大的供应链也为这一成长轨迹提供了支撑。根据不织布工业协会 (ANFI) 预测，北美不织布产业的产能预计将在 2024 年增加 10 万吨以上，达到 570 万吨以上，这表明对关键过滤材料的投资将持续成长。

然而，市场扩张面临的主要障碍包括维护这些系统所需的高昂营运成本和技术复杂性。吸附介质的使用寿命有限，需要定期监测以避免饱和，这需要专业技能和持续的更换成本。这种经济负担往往会阻碍营运预算有限的产业采用这些系统，最终用户也难以平衡高效气态污染物控制的高昂成本与所需的大量设施管理资源。

市场驱动因素

严格的环境法规和空气品质标准是全球气相过滤市场的主要驱动力。世界各地的监管机构正在对工业排放施加更严格的限制，以减少空气污染，这要求采用能够去除有害气体和前驱化合物的先进过滤解决方案。这种监管压力迫使发电厂和製造厂对其基础设施进行现代化改造以符合规定，从而推动了对高效气相过滤介质的需求。例如，美国环保署 (EPA) 于 2024 年 2 月发布的《加强国家颗粒物空气品质标准最终规则》将关键的 PM2.5 年均基准值从每立方米 12.0 微克大幅降低至每立方米 9.0 微克，要求各行业控制导致细粒物形成的气态前体。

另一个关键驱动因素是微电子和资料中心产业对防腐蚀的需求。随着电子元件尺寸的不断缩小，氯和硫等腐蚀性大气成分造成的故障风险也随之增加，因此，气相过滤对于确保产量比率和设备可靠性至关重要。这个高科技产业的快速发展为过滤设备供应商创造了巨大的成长机会。根据美国半导体产业协会 (SIA) 于 2024 年 9 月发布的《2024 年美国半导体产业状况报告》，预计 2024 年全球半导体销售额将超过 6,000 亿美元，这意味着污染防治基础设施将迎来大量投资。这一发展动能也体现在企业绩效上。唐纳森公司 (Donaldson & Co.) 报告称，其工业过滤解决方案部门在 2024 财年第二季度的销售额增长了 6.0%，凸显了市场对工业级过滤日益增长的需求。

市场挑战

全球气相过滤市场的主要障碍在于其高昂的营运成本和维护方面的技术复杂性。这些系统依赖吸附能力有限的吸附剂，需要频繁且精确的监测以防止污染物穿透。这要求具备专业的技术知识和先进的即时监控工具，导致总拥有成本 (TCO) 远超初始购置价格。因此，设施管理人员通常将这些系统视为一项财务负担，尤其是在预算紧张、室内空气品质要求高于预算限制的环境中。

这些持续的成本直接阻碍了市场成长，限制了气相过滤技术的应用范围，使其仅限于半导体製造等关键领域，同时也疏远了注重成本的商业用户。介质更换和危险废弃物处理带来的物流挑战进一步阻碍了消费用户的采用。儘管整个行业的贸易活动依然强劲，但这些财务限制正在减缓气相过滤技术的实际应用。例如，德国机械设备製造业联合会（VDMA）报告称，到2024年，德国空调技术出口将达到73.2亿欧元，但气相过滤的高昂维护成本仍然限制了其在这个庞大的基础设施市场中的广泛应用。

市场趋势

随着越来越多的製造商采用循环经济原则以最大限度地减少废弃介质对环境的影响，整个产业正经历着向永续、可再生吸附材料转型的重大变革。由于传统的活性碳和浸渍氧化铝最终往往掩埋，因此，产业策略性地转向生物基前体和可再生基材，以延长其使用寿命并减少有害废弃物。不断发展的化学品安全标准和企业永续性目标的需求进一步加速了这一趋势，促使整个产业抛弃一次性解决方案。根据Ahlstrom公司于2025年3月发布的《2024年永续发展报告》，该公司预计2024年净销售额将达到30亿欧元。这项成就主要归功于安全纤维基解决方案的成长，包括该公司新推出的不含PFAS的工业过滤介质。

同时，基于奈米技术的过滤介质的开发显着提高了吸附效率，同时降低了通常与高性能气体去除相关的能源成本。这些先进的设计将奈米纤维层整合到吸附剂结构中，在不成比例增加空气阻力的情况下，大幅增加了可用于污染物捕获的表面积，从而直接降低了与能源使用相关的运行成本。这项技术进步使得紧凑型混合介质的开发成为可能，这种介质能够更精确地捕获特定的分子污染物，同时降低压力降。正如曼胡默尔集团在2025年5月发布的2024年度报告中所述，集团已将其研发投入增加至1.283亿欧元，表明其专注于开发先进的过滤技术和新型介质成分，以提高分离能力并减少碳排放。

目录

第一章概述

第二章调查方法

第三章执行摘要

第四章：客户评价

5. 全球气相过滤市场展望

• 市场规模及预测
  • 按金额
• 市占率及预测
  • 按类型（复合过滤器、填料床过滤器）
  • 透过介质过滤（活性碳、高锰酸钾、混合物）
  • 按最终用户划分（化学和石油化工、金属和采矿、食品和饮料、医疗、水和污水处理、其他）
  • 按地区
  • 按公司（2025 年）
• 市场地图

6. 北美气相过滤市场展望

• 市场规模及预测
• 市占率及预测
• 北美洲：国家分析
  • 我们
  • 加拿大
  • 墨西哥

7. 欧洲气相过滤市场展望

• 市场规模及预测
• 市占率及预测
• 欧洲：国家分析
  • 德国
  • 法国
  • 英国
  • 义大利
  • 西班牙

8. 亚太地区气相过滤市场展望

• 市场规模及预测
• 市占率及预测
• 亚太地区：国家分析
  • 中国
  • 印度
  • 日本
  • 韩国
  • 澳洲

9. 中东和非洲气相过滤市场展望

• 市场规模及预测
• 市占率及预测
• 中东和非洲：国家分析
  • 沙乌地阿拉伯
  • 阿拉伯聯合大公国
  • 南非

10. 南美气相过滤市场展望

• 市场规模及预测
• 市占率及预测
• 南美洲：国家分析
  • 巴西
  • 哥伦比亚
  • 阿根廷

第十一章 市场动态

• 司机
• 任务

第十二章 市场趋势与发展

• 併购
• 产品发布
• 最新进展

第十三章 全球气相过滤市场：SWOT分析

第十四章 波特五力分析

• 产业竞争
• 新进入者的可能性
• 供应商电力
• 顾客权力
• 替代品的威胁

第十五章 竞争格局

• Camfil AB
• American Air Filter Company Inc
• Freudenberg SE
• Parker-Hannifin Corporation
• Bry-Air（Asia）Pvt. Ltd
• Purafil Inc, Circul-Aire Inc
• Kimberly-Clark Corporation
• ProMark Associates Inc.

第十六章 策略建议

第十七章：关于研究公司及免责声明

The Global Gas Phase Filtration Market is projected to expand from USD 5.94 billion in 2025 to USD 8.01 billion by 2031, registering a CAGR of 5.11%. This process entails the removal of gaseous pollutants, such as volatile organic compounds and corrosive fumes, from air streams utilizing sorbent media like activated carbon or impregnated alumina. Growth is primarily propelled by rigorous environmental standards concerning industrial emissions and a global focus on ensuring superior indoor air quality to safeguard human health and sensitive electronic equipment. This trajectory is bolstered by a robust supply chain; according to the Association of the Nonwoven Fabrics Industry, the North American nonwovens sector expanded its capacity by over 100,000 tonnes in 2024 to surpass 5.7 million tonnes, signaling continued investment in essential filtration materials.

However, a major obstacle hindering broader market expansion is the significant operational cost and technical intricacy involved in maintaining these systems. Because the sorbent media has a limited service life, it necessitates regular monitoring to avoid saturation, requiring specialized skills and incurring consistent replacement costs. This financial weight often deters implementation in industries with constrained operating budgets, as end users find it difficult to reconcile the premium costs of effective gaseous contaminant control with their broader facility management resources.

Market Driver

Rigid environmental and air quality mandates act as the main engine for the Global Gas Phase Filtration Market. Authorities across the globe are imposing stricter boundaries on industrial emissions to mitigate atmospheric pollution, requiring the deployment of sophisticated filtration solutions that can eliminate hazardous gases and precursor compounds. These regulatory pressures force power generation and manufacturing plants to modernize their infrastructure for compliance, boosting the need for high-efficiency gas phase media. For example, the U.S. Environmental Protection Agency's "Final Rule to Strengthen the National Ambient Air Quality Standards for Particulate Matter" in February 2024 notably tightened the primary annual PM2.5 standard from 12.0 to 9.0 micrograms per cubic meter, compelling industries to manage the gaseous precursors that contribute to fine particle creation.

Another vital driver is the necessity for corrosion prevention within the microelectronics and data center sectors. As electronic components undergo miniaturization, they become increasingly vulnerable to failure from corrosive airborne elements like chlorine and sulfur, rendering gas phase filtration essential for yield protection and equipment reliability. The swift growth of this high-tech industry creates significant opportunities for filtration suppliers. According to the Semiconductor Industry Association's "2024 State of the U.S. Semiconductor Industry Report" from September 2024, global semiconductor sales were forecast to exceed $600 billion in 2024, indicating substantial investment in contamination control infrastructure. This momentum is mirrored in corporate performance; Donaldson Company, Inc. reported a 6.0% sales increase in its Industrial Filtration Solutions segment during the fiscal second quarter of 2024, highlighting the growing demand for industrial-grade filtration.

Market Challenge

The substantial operational expenses and technical complexities linked to maintenance pose a major hurdle for the Global Gas Phase Filtration Market. These systems rely on sorbent media that possesses a limited adsorption capacity, requiring frequent and accurate oversight to avoid contaminant breakthrough. This necessity calls for specialized technical knowledge and sophisticated real-time monitoring tools, which drastically raises the total cost of ownership well above the initial purchase price. As a result, facility managers frequently perceive these systems as financial burdens, especially in settings where tight budgetary limits take precedence over the requirement for exceptional indoor air quality.

These recurring expenses directly inhibit market growth by confining adoption largely to mission-critical fields, such as semiconductor fabrication, while alienating cost-conscious commercial segments. The logistical challenges associated with media replacement and the disposal of hazardous waste further impede integration for general users. Although trade activity in the wider sector remains strong, the specific adoption of gas phase elements trails behind due to these financial constraints. For instance, while the Mechanical Engineering Industry Association (VDMA) reported that German air handling technology exports hit 7.32 billion euros in 2024, the prohibitive maintenance costs associated with gas phase filtration continue to restrict its penetration within this vast infrastructure market.

Market Trends

The industry is undergoing a significant transformation toward sustainable and regenerable sorbent materials as manufacturers adopt circular economy principles to minimize the environmental footprint of spent media. Traditional activated carbon and impregnated alumina frequently end up in landfills, driving a strategic shift toward bio-based precursors and regenerable substrates that prolong usage cycles and decrease hazardous waste. This trend is further propelled by the necessity to comply with evolving chemical safety standards and corporate sustainability targets, moving the sector away from single-use disposal methods. According to Ahlstrom's "Sustainability Report 2024" released in March 2025, the company recorded net sales of 3.0 billion euros in 2024, a result largely attributed to the growth of safe, fiber-based solutions, including their newly introduced PFAS-free industrial filtration media.

Concurrently, developments in nanotechnology-enhanced filter media are vastly improving adsorption efficiency while mitigating the energy costs typically linked to high-performance gas removal. By integrating nanofiber layers into sorbent architectures, these modern designs dramatically expand the surface area available for capturing contaminants without causing a proportional rise in airflow resistance, thereby directly tackling operational costs associated with energy use. This technological progression facilitates the creation of compact, hybrid media that can target specific molecular pollutants with higher accuracy while ensuring lower pressure drops. As noted in Mann+Hummel's "Annual Report 2024" from May 2025, the group increased its research and development investment to 128.3 million euros, signaling a dedicated effort to create advanced filtration technologies and novel media formulations that enhance separation capabilities and reduce carbon footprints.

Key Market Players

• Camfil AB
• American Air Filter Company Inc
• Freudenberg SE
• Parker-Hannifin Corporation
• Bry-Air (Asia) Pvt. Ltd
• Purafil Inc, Circul-Aire Inc
• Kimberly-Clark Corporation
• ProMark Associates Inc.

Report Scope

In this report, the Global Gas Phase Filtration Market has been segmented into the following categories, in addition to the industry trends which have also been detailed below:

Gas Phase Filtration Market, By Type

• Combination Filter
• Packed Bed Filter

Gas Phase Filtration Market, By Media Filter

• Activated Carbon
• Potassium Permanganate
• Blend

Gas Phase Filtration Market, By End User

• Chemicals & Petrochemicals
• Metals & Mining
• Food & Beverages
• Healthcare
• Water & Wastewater
• Others

Gas Phase Filtration Market, By Region

• North America
  • United States
  • Canada
  • Mexico
• Europe
  • France
  • United Kingdom
  • Italy
  • Germany
  • Spain
• Asia Pacific
  • China
  • India
  • Japan
  • Australia
  • South Korea
• South America
  • Brazil
  • Argentina
  • Colombia
• Middle East & Africa
  • South Africa
  • Saudi Arabia
  • UAE

Competitive Landscape

Company Profiles: Detailed analysis of the major companies present in the Global Gas Phase Filtration Market.

Available Customizations:

Global Gas Phase Filtration Market report with the given market data, TechSci Research offers customizations according to a company's specific needs. The following customization options are available for the report:

Company Information

• Detailed analysis and profiling of additional market players (up to five).

Table of Contents

1. Product Overview

• 1.1. Market Definition
• 1.2. Scope of the Market
  • 1.2.1. Markets Covered
  • 1.2.2. Years Considered for Study
  • 1.2.3. Key Market Segmentations

2. Research Methodology

• 2.1. Objective of the Study
• 2.2. Baseline Methodology
• 2.3. Key Industry Partners
• 2.4. Major Association and Secondary Sources
• 2.5. Forecasting Methodology
• 2.6. Data Triangulation & Validation
• 2.7. Assumptions and Limitations

3. Executive Summary

• 3.1. Overview of the Market
• 3.2. Overview of Key Market Segmentations
• 3.3. Overview of Key Market Players
• 3.4. Overview of Key Regions/Countries
• 3.5. Overview of Market Drivers, Challenges, Trends

4. Voice of Customer

5. Global Gas Phase Filtration Market Outlook

• 5.1. Market Size & Forecast
  • 5.1.1. By Value
• 5.2. Market Share & Forecast
  • 5.2.1. By Type (Combination Filter, Packed Bed Filter)
  • 5.2.2. By Media Filter (Activated Carbon, Potassium Permanganate, Blend)
  • 5.2.3. By End User (Chemicals & Petrochemicals, Metals & Mining, Food & Beverages, Healthcare, Water & Wastewater, Others)
  • 5.2.4. By Region
  • 5.2.5. By Company (2025)
• 5.3. Market Map

6. North America Gas Phase Filtration Market Outlook

• 6.1. Market Size & Forecast
  • 6.1.1. By Value
• 6.2. Market Share & Forecast
  • 6.2.1. By Type
  • 6.2.2. By Media Filter
  • 6.2.3. By End User
  • 6.2.4. By Country
• 6.3. North America: Country Analysis
  • 6.3.1. United States Gas Phase Filtration Market Outlook
    • 6.3.1.1. Market Size & Forecast
      • 6.3.1.1.1. By Value
    • 6.3.1.2. Market Share & Forecast
      • 6.3.1.2.1. By Type
      • 6.3.1.2.2. By Media Filter
      • 6.3.1.2.3. By End User
  • 6.3.2. Canada Gas Phase Filtration Market Outlook
    • 6.3.2.1. Market Size & Forecast
      • 6.3.2.1.1. By Value
    • 6.3.2.2. Market Share & Forecast
      • 6.3.2.2.1. By Type
      • 6.3.2.2.2. By Media Filter
      • 6.3.2.2.3. By End User
  • 6.3.3. Mexico Gas Phase Filtration Market Outlook
    • 6.3.3.1. Market Size & Forecast
      • 6.3.3.1.1. By Value
    • 6.3.3.2. Market Share & Forecast
      • 6.3.3.2.1. By Type
      • 6.3.3.2.2. By Media Filter
      • 6.3.3.2.3. By End User

7. Europe Gas Phase Filtration Market Outlook

• 7.1. Market Size & Forecast
  • 7.1.1. By Value
• 7.2. Market Share & Forecast
  • 7.2.1. By Type
  • 7.2.2. By Media Filter
  • 7.2.3. By End User
  • 7.2.4. By Country
• 7.3. Europe: Country Analysis
  • 7.3.1. Germany Gas Phase Filtration Market Outlook
    • 7.3.1.1. Market Size & Forecast
      • 7.3.1.1.1. By Value
    • 7.3.1.2. Market Share & Forecast
      • 7.3.1.2.1. By Type
      • 7.3.1.2.2. By Media Filter
      • 7.3.1.2.3. By End User
  • 7.3.2. France Gas Phase Filtration Market Outlook
    • 7.3.2.1. Market Size & Forecast
      • 7.3.2.1.1. By Value
    • 7.3.2.2. Market Share & Forecast
      • 7.3.2.2.1. By Type
      • 7.3.2.2.2. By Media Filter
      • 7.3.2.2.3. By End User
  • 7.3.3. United Kingdom Gas Phase Filtration Market Outlook
    • 7.3.3.1. Market Size & Forecast
      • 7.3.3.1.1. By Value
    • 7.3.3.2. Market Share & Forecast
      • 7.3.3.2.1. By Type
      • 7.3.3.2.2. By Media Filter
      • 7.3.3.2.3. By End User
  • 7.3.4. Italy Gas Phase Filtration Market Outlook
    • 7.3.4.1. Market Size & Forecast
      • 7.3.4.1.1. By Value
    • 7.3.4.2. Market Share & Forecast
      • 7.3.4.2.1. By Type
      • 7.3.4.2.2. By Media Filter
      • 7.3.4.2.3. By End User
  • 7.3.5. Spain Gas Phase Filtration Market Outlook
    • 7.3.5.1. Market Size & Forecast
      • 7.3.5.1.1. By Value
    • 7.3.5.2. Market Share & Forecast
      • 7.3.5.2.1. By Type
      • 7.3.5.2.2. By Media Filter
      • 7.3.5.2.3. By End User

8. Asia Pacific Gas Phase Filtration Market Outlook

• 8.1. Market Size & Forecast
  • 8.1.1. By Value
• 8.2. Market Share & Forecast
  • 8.2.1. By Type
  • 8.2.2. By Media Filter
  • 8.2.3. By End User
  • 8.2.4. By Country
• 8.3. Asia Pacific: Country Analysis
  • 8.3.1. China Gas Phase Filtration Market Outlook
    • 8.3.1.1. Market Size & Forecast
      • 8.3.1.1.1. By Value
    • 8.3.1.2. Market Share & Forecast
      • 8.3.1.2.1. By Type
      • 8.3.1.2.2. By Media Filter
      • 8.3.1.2.3. By End User
  • 8.3.2. India Gas Phase Filtration Market Outlook
    • 8.3.2.1. Market Size & Forecast
      • 8.3.2.1.1. By Value
    • 8.3.2.2. Market Share & Forecast
      • 8.3.2.2.1. By Type
      • 8.3.2.2.2. By Media Filter
      • 8.3.2.2.3. By End User
  • 8.3.3. Japan Gas Phase Filtration Market Outlook
    • 8.3.3.1. Market Size & Forecast
      • 8.3.3.1.1. By Value
    • 8.3.3.2. Market Share & Forecast
      • 8.3.3.2.1. By Type
      • 8.3.3.2.2. By Media Filter
      • 8.3.3.2.3. By End User
  • 8.3.4. South Korea Gas Phase Filtration Market Outlook
    • 8.3.4.1. Market Size & Forecast
      • 8.3.4.1.1. By Value
    • 8.3.4.2. Market Share & Forecast
      • 8.3.4.2.1. By Type
      • 8.3.4.2.2. By Media Filter
      • 8.3.4.2.3. By End User
  • 8.3.5. Australia Gas Phase Filtration Market Outlook
    • 8.3.5.1. Market Size & Forecast
      • 8.3.5.1.1. By Value
    • 8.3.5.2. Market Share & Forecast
      • 8.3.5.2.1. By Type
      • 8.3.5.2.2. By Media Filter
      • 8.3.5.2.3. By End User

9. Middle East & Africa Gas Phase Filtration Market Outlook

• 9.1. Market Size & Forecast
  • 9.1.1. By Value
• 9.2. Market Share & Forecast
  • 9.2.1. By Type
  • 9.2.2. By Media Filter
  • 9.2.3. By End User
  • 9.2.4. By Country
• 9.3. Middle East & Africa: Country Analysis
  • 9.3.1. Saudi Arabia Gas Phase Filtration Market Outlook
    • 9.3.1.1. Market Size & Forecast
      • 9.3.1.1.1. By Value
    • 9.3.1.2. Market Share & Forecast
      • 9.3.1.2.1. By Type
      • 9.3.1.2.2. By Media Filter
      • 9.3.1.2.3. By End User
  • 9.3.2. UAE Gas Phase Filtration Market Outlook
    • 9.3.2.1. Market Size & Forecast
      • 9.3.2.1.1. By Value
    • 9.3.2.2. Market Share & Forecast
      • 9.3.2.2.1. By Type
      • 9.3.2.2.2. By Media Filter
      • 9.3.2.2.3. By End User
  • 9.3.3. South Africa Gas Phase Filtration Market Outlook
    • 9.3.3.1. Market Size & Forecast
      • 9.3.3.1.1. By Value
    • 9.3.3.2. Market Share & Forecast
      • 9.3.3.2.1. By Type
      • 9.3.3.2.2. By Media Filter
      • 9.3.3.2.3. By End User

10. South America Gas Phase Filtration Market Outlook

• 10.1. Market Size & Forecast
  • 10.1.1. By Value
• 10.2. Market Share & Forecast
  • 10.2.1. By Type
  • 10.2.2. By Media Filter
  • 10.2.3. By End User
  • 10.2.4. By Country
• 10.3. South America: Country Analysis
  • 10.3.1. Brazil Gas Phase Filtration Market Outlook
    • 10.3.1.1. Market Size & Forecast
      • 10.3.1.1.1. By Value
    • 10.3.1.2. Market Share & Forecast
      • 10.3.1.2.1. By Type
      • 10.3.1.2.2. By Media Filter
      • 10.3.1.2.3. By End User
  • 10.3.2. Colombia Gas Phase Filtration Market Outlook
    • 10.3.2.1. Market Size & Forecast
      • 10.3.2.1.1. By Value
    • 10.3.2.2. Market Share & Forecast
      • 10.3.2.2.1. By Type
      • 10.3.2.2.2. By Media Filter
      • 10.3.2.2.3. By End User
  • 10.3.3. Argentina Gas Phase Filtration Market Outlook
    • 10.3.3.1. Market Size & Forecast
      • 10.3.3.1.1. By Value
    • 10.3.3.2. Market Share & Forecast
      • 10.3.3.2.1. By Type
      • 10.3.3.2.2. By Media Filter
      • 10.3.3.2.3. By End User

11. Market Dynamics

• 11.1. Drivers
• 11.2. Challenges

12. Market Trends & Developments

• 12.1. Merger & Acquisition (If Any)
• 12.2. Product Launches (If Any)
• 12.3. Recent Developments

13. Global Gas Phase Filtration Market: SWOT Analysis

14. Porter's Five Forces Analysis

• 14.1. Competition in the Industry
• 14.2. Potential of New Entrants
• 14.3. Power of Suppliers
• 14.4. Power of Customers
• 14.5. Threat of Substitute Products

15. Competitive Landscape

• 15.1. Camfil AB
  • 15.1.1. Business Overview
  • 15.1.2. Products & Services
  • 15.1.3. Recent Developments
  • 15.1.4. Key Personnel
  • 15.1.5. SWOT Analysis
• 15.2. American Air Filter Company Inc
• 15.3. Freudenberg SE
• 15.4. Parker-Hannifin Corporation
• 15.5. Bry-Air (Asia) Pvt. Ltd
• 15.6. Purafil Inc, Circul-Aire Inc
• 15.7. Kimberly-Clark Corporation
• 15.8. ProMark Associates Inc.

16. Strategic Recommendations

17. About Us & Disclaimer