Cambustion Hall 8 / C27

Exhibitor Profile

The Aerodynamic Aerosol Classifier has been adopted globally for its unique ability to classify aerosol particles by aerodynamic diameter.

Selecting truly monodisperse aerosol over the unprecedented size range of 25nm – 5µm, the AAC is ideal for penetration studies and aerodynamic size distribution measurement. With no need to charge the particles, AAC output is free from multiple charging artefacts, which affect DMAs. Software upgrades in 2019 allow continuous (vs step) scans, for shorter scan times with significantly higher spectral resolution. [Session G17 - Monitoring & Control Thurs 24th October 14:45 – 16:00 Room 4A]

The DMS500 provides the fastest real-time electrical mobility size/number distributions available (from 200ms T10-90% at 10Hz); measuring from 5nm – 2.5μm, with unrivalled time response, sensitivity and sizing accuracy across the entire size range, with a single measurement technique. Applications include ambient monitoring, combustion aerosol and workplace measurements. A new catalytic stripper option (removal of volatiles) further enhances the DMS500’s integrated sampling and conditioning options, enabling both ambient measurements and direct sampling of rapidly-changing, high concentration aerosol sources.

Cambustion have launched the Dual Diluter system allowing automated upstream / downstream measurements of particle concentration for filter efficiency testing.

Products / Markets

Product Index

  • Analytische Messtechnik
  • Messinstrumente
  • Nanopartikelanalyse
  • Nanopartikelmessung
  • Online Particle Analysis
  • Partikelanalysemethoden
  • Partikelformanalyse
  • Partikelgrößenanalyse
  • Partikelgrößenverteilungsanalyse

Market Scope

  • Automobilindustrie
  • Biotechnologie/Biopharmazie
  • Medizintechnik, Health Care Industrie
  • Pharmazeutische Industrie
  • Umweltschutz

Product Index

  • Analytical Instruments
  • Measurement Instruments
  • Nanoparticle Analysis
  • Nanoparticle Measurement
  • Online Particle Analysis
  • Particle Measuring Methods
  • Particle Shape Analysis
  • Particle Size Analysis
  • Particle Size Distribution Analysis

Market Scope

  • Automotive Industry
  • Biotechnology/Biopharmac. Industry
  • Environmental Protection
  • Medical, Health Care Industry
  • Pharmaceutical Industry

Product Index

  • 测量仪器
  • 分析仪器
  • 在线颗粒分析
  • 纳米颗粒分析
  • 纳米颗粒测量
  • 颗粒大小分布分析
  • 颗粒大小分析
  • 颗粒形状分析
  • 颗粒测量方法

Market Scope

  •  汽车工业
  • 制药工业
  • 医疗卫生保健业
  • 环境保护
  • 生物技术/生物制药业

Product Index

  • أدوات القياس
  • التحاليل
  • تحاليل الأجسام الدقيقة
  • تحاليل على الأنبوب (على الخط)
  • تحليل الجسيمات الصفائحية
  • تحليل الجسيمات الصفائحية
  • طرق قياس الجسيمات
  • قياس الأجسام الدقيقة
  • موزع أحجام الجسيماتالتحاليل

Market Scope

  • الصناعات الدوائية
  • الصناعات الطبية والعناية الصحية
  • صناعة الألبان
  • صناعة التقنية البيولوجية والبيوصيدلية
  • صناعة السيارات

Product Index

  • Analyse de distribution de tailles de particules
  • Analyse de forme de particules
  • Analyse de nanoparticules
  • Analyse de particules en ligne
  • Analyse de tailles de particules
  • Instruments analytiques
  • Instruments de mesure
  • Mesures de nanoparticules
  • Méthodes de mesures de particules

Market Scope

  • Industrie automobile
  • Industrie biotechnologie/biopharmaceutique
  • Industrie laitière
  • Industrie médicale et de la santé
  • Industrie pharmaceutique

Product Index

  • Analisi dimensione particelle
  • Analisi distribuzione dimensione particelle
  • Analisi forma particelle
  • Analisi nanoparticelle
  • Analisi particelle online
  • Metodi di misurazione particelle
  • Misurazione nanoparticelle
  • Strumenti analitici
  • Strumenti di misura

Market Scope

  • Biotecnologie/biofarmaceutica
  • Protezione ambientale
  • Settore automobilistico
  • Settore medicale e sanità
  • Settore parafarmaceutico

Product Index

  • Analiza cząsteczek online
  • Analiza kształtu cząsteczek
  • Analiza nanocząsteczek
  • Analiza rozkładu wielkości cząsteczek
  • Analiza rozmiaru cząsteczek
  • Metody pomiaru cząsteczek
  • Narzędzia analityczne
  • Pomiar nanocząsteczek
  • Przyrządy pomiarowe

Market Scope

  • Biotechnologia/biofarmaceutyka
  • Ochrona zdrowia
  • Ochrona środowiska
  • Przemysł farmaceutyczny
  • Przemysł samochodowy

Product Index

  • Análise da dimensão das partículas
  • Análise da distribuição da dimensão das partículas
  • Análise da forma das partículas
  • Análise de nanopartículas
  • Análise de partículas online
  • Instrumentos analíticos
  • Instrumentos de Medição
  • Medição de nanopartículas
  • Métodos de medição de partículas

Market Scope

  • Ind. de biotecnologia/biofarmac.
  • Indústria automóvel
  • Indústria farmacêutica
  • Indústria leiteira
  • Indústria médica, cuidados de saúde

Product Index

  • Анализ наночастиц
  • Анализ потока частиц
  • Анализ размеров частиц
  • Анализ формы частицы
  • Аналитические инструменты
  • Измерение наночастиц
  • Инструменты для измерения
  • Размер частиц Анализ
  • Способы измерения частиц

Market Scope

  • Автомобильная промышленность
  • Биотехнология / Биофармацевтическая промышленность
  • Медицина, здравоохранение
  • Молочная промышленность
  • Фармацевтическая промышленность

Product Index

  • Análisis de distribución de formas de partículas
  • Análisis de formas de particulas.
  • Análisis de formas de partículas
  • Análisis de nanopartículas
  • Análisis de partículas en línea
  • Instrumentos analíticos
  • Instrumentos de medida
  • Medición de nanopartículas
  • Métodos de medición de partículas

Market Scope

  • Industria de la automoción
  • Industria de la biotecnología/biofarmacéutica
  • Industria de los productos lácteos
  • Industria farmacéutica
  • Industria médica, de la atención sanitaria

Product Index

  • Ölçü Aletleri
  • Analitik Cihazlar
  • Nanopartikül Analizi
  • Nanopartikül Ölçümü
  • Partikül Boyut Dağılımı Analizi
  • Partikül Boyutu Analizi
  • Partikül Ölçüm Yöntemleri
  • Partikül Şekli Analizi
  • Çevrimiçi Partikül Analizi

Market Scope

  • Biyoteknoloji/Biyoeczacılık Endüstrisi
  • Otomotiv Endüstrisi
  • Tıp, Sağlık Sektörü
  • Çevre Koruma
  • İlaç Endüstrisi

Product Index

  • 나노 입자 분석
  • 나노 입자 측정
  • 분석 장치
  • 온라인 입자 분석
  • 입자 측정 방법
  • 입자 크기 분석
  • 입자 크기 분포 분석
  • 입자 형태 분석
  • 측정 기기

Market Scope

  • 생명공학/생물 약제학 산업
  • 의료, 보건 산업
  • 자동차 산업
  • 제약 산업
  • 환경 보호

Product Index

  • オンライン粒子分析
  • ナノ粒子分析
  • ナノ粒子測定
  • 分析機器
  • 測定器
  • 粒子形状分析
  • 粒子径分析
  • 粒子測定方法
  • 粒度分布分析

Market Scope

  • バイオテクノロジー・バイオ医薬品産業
  • 医療、ヘルスケア業界
  • 医薬品業界
  • 環境保護
  • 自動車産業

Conference Presentation/s

Conference Session: G6 - Short Oral Presentations

Measurement of the size-resolved filtration efficiency of various face mask materials using the aerodynamic aerosol classifier

S. Payne*, J. Symonds, Cambustion Ltd, UK

Face coverings are widely worn in public spaces under many countries’ COVID-19 laws and guidelines. The intention is that coverings over the mouth and nose will protect others (rather than the wearer) against the spread of infection by capturing virus-laden droplets in exhaled air, coughs and sneezes. These commonly consist of layers of woven fabric. Surgical masks are intended for health care staff to protect patients during surgical procedures and in other medical settings. Respiratory filtering half masks are intended to protect the wearer and are regulated as personal protective equipment (PPE) for inhaled air only.

Numerous recent studies have emphasised the possibility of airborne coronavirus transmission. While the World Health Organisation (WHO) defines droplets as ≥5-10 μm diameter and aerosols as <5 μm, both can be generated as a continuum of particle sizes during various respiratory activities including coughing, talking and singing.

It is therefore of interest to investigate the particle size-resolved filtration properties of various face mask materials, for both inhalation and exhalation flows and across a wide particle size range. A suitable instrument for achieving this is the Aerodynamic Aerosol Classifier (AAC), which can select particle sizes between 25 nm and >5 μm by using a rotating cylinder to balance opposing centrifugal and drag forces for the desired aerodynamic diameter, so that particles move across a sheath flow to the outlet. This principle of aerosol selection is independent of the charge state and produces a truly monodisperse aerosol with a high transmission efficiency limited only by diffusion and impaction losses.

This study uses an AAC to select monodisperse test particles by aerodynamic diameter in order to assess the filtration performance of various face covering materials, in both flow directions and at filter face velocities representative of inhalation and exhalation flow rates. These coverings included:-

  • Disposable filtering half masks conforming to the FFP1, FFP2 and FFP3 classes specified in EN 149
  • Disposable surgical masks consisting of non-woven fabrics
  • Cloth face coverings with woven fabrics of various thread counts and layered structures

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