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TSI Instruments Ltd

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Stirling Road,
Cressex Business Park,
High Wycombe,
Buckinghamshire,
HP12 3ST,
United Kingdom

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Aerosol & Dust Monitors

Aerosol monitors, commonly referred to as dust monitors, particulate monitors, light scattering laser photometers, and nephlometers, are used to measure dust, smoke, mist, fume, condensates, and fog. TSI Aerosol Monitors offer real-time, direct-reading results, which is quickly becoming an industry best practice in occupational hygiene, indoor air quality, and outdoor environmental fugitive emissions monitoring.

Aerosol Generators & Dispersers

Aerosol generators and dispersers play a vital role in producing the defined aerosol required for an array of aerosol testing, production, and research. Applications requiring aerosol generation are very diverse, and include, but are certainly not limited to, filter testing, deposition of nanoparticles onto surfaces, vacuum-cleaner performance tests, and calibration of aerosol instruments.

Cleanroom Particle Counters

TSI’s cleanroom facility environmental monitoring products with built-in redundancy provide the confidence you need to reliably monitor critical processes and demonstrate compliance. Eliminate waste, interventions and interruptions using TSI:

Facility Monitoring Software (OPC UA Client/Server)
Remote Active Air Sampler
Remote Particle Counters (including new AeroTrak®+ Remote Particle Counters)
Real-Time Viable Particle Counter
Handheld Particle Counters
Portable Particle Counters
Condensation Particle Counter

Flow Meters, Flow Sensors & Flow Analyzers

For half a century, TSI has earned the reputation as a leader in designing and manufacturing flow measurement instrumentation. TSI mass flow meters, Certifier flow analyzers, and mass flow sensors for gases are used worldwide in laboratory and manufacturing settings, plus embedded applications. Our flow meters, flow analyzers, and embedded flow sensors are optimized for medical applications where accuracy and reliability are key requirements.

Indoor Air Quality Meters / Instruments

In both work environments and residential spaces, individuals often spend a significant portion of their time indoors. The quality of indoor air plays a critical role in ensuring long-term health and overall comfort. This is where indoor air quality testing becomes essential. In today's world, businesses are showing a growing interest in air quality monitoring systems, as they understand the direct correlation between air quality and factors like worker productivity and energy efficiency. Addressing this need, TSI offers a comprehensive range of indoor air quality (IAQ) instruments renowned for their user-friendliness, consistency, and unwavering reliability.

OmniTrak Air Quality Meter

TSI OmniTrak™ Solution is a customizable, scalable, and affordable solution enabled by connecting innovative monitoring instruments, intelligent TSI Link™ software and service solutions. This platform solution of connected devices allows you to plan, measure, report, recommend, and monitor key business drivers and risks to help improve health, wellbeing, and efficiency.

Customizable, Scalable, and Affordable Solutions from TSI.
TSI provides a modular designed solution allowing for flexibility and connection to future generation modules for additional surveying capabilities. All connected to our OmniTrak™ Smart Station, each individual module can be wirelessly connected for different testing parameters (up to 10 at a time).

Tailor the solution to fit your needs. Whatever role you take on from industrial hygenist, facility manager, property owner, or a leader in education, indoor environments vary between every building and room. TSI OmniTrak™ Solutions help air quality testing professionals who want to survey various air quality parameters with multiple measurement points and analyze data inputs to create reports by reducing the number of survey instruments needed and avoiding time-consuming manual work to increase their productivity.

Are you tired of spending hours creating reports manually? Enjoy custom reports and smart visualization in a few clicks with TSI Link™ Report Creator. Save time and simplify reporting - with TSI Link™ Report Creator you can automatically generate custom reports that include tables, graphs, additional insights and access user-friendly Excel templates for your studies.

Available modules: Ammonia (NH₃), Chlorine (Cl), Ozone (O₃), Formaldehyde (HCHO), Carbon Monoxide (CO), Particulate Matter (PM) and VOC-PID (ppm), VOC-PID (ppb), VOC-PID (ppm), Particulate Matter (pm)

Noise Dosimeters & Sound Level Meters

TSI's Quest™ Edge Personal Noise Dosimeters are shoulder mounted, providing ergonomic, convenient measurement. Handheld Quest sound level meters measure average sound pressure level over time. All units are compact, with large displays and intuitive interfaces to provide crucial information at a glance and in real-time.

Our personal noise indicators and sound detectors make it easier to measure sound and noise levels in real-time, and determine the level of hearing protection necessary in a particular environment.

The Detection Management Software program works with various TSI Quest data logging instruments, allowing you to record, report, chart and analyze exposures to a host of occupational and environmental hazards.

Particle Counters & Detectors

Our family of particle counters and particle detectors contain instruments optimized for a variety of applications.

In environmental research and monitoring, customers face high concentrations in city centers, near freeways or harbors, or very low concentrations in remote locations which are used as reference sampling points.

In the laboratory, particle counters are often combined with particle sizers to measure size distributions.

Workplaces, hospitals, schools, residential homes and other sensitive environments prefer water-based Condensation Particle Counters (CPCs) to ensure the occupants’ safety and health.

Combustion aerosol has its own challenges, such as sampling the aerosol without changing it, or following regulatory directives for engine exhaust.
For the purpose of calibration, reference counting is typically performed with an Aerosol Electrometer.

Whatever your challenge is, TSI offers a solution. Let us help you to find yours.

Particle Sizers

TSI provides aerosol sizing instruments that expand our understanding of aerosols and lead to breakthroughs in research and a wide range of industries. TSI manufactures particle sizing instrumentation and systems that span the particle size range from 1 nm to 20 micrometers. Our instruments are routinely used around the globe in a variety of applications, including air quality monitoring, aerosol research, engine emissions, exposure studies, and many more.

TSI’s particle sizers provide particle size ranges for a variety of applications, click below to discover how TSI can support your research and measurement needs.

Respirator Fit Testers

In many of today’s workplace environments, a respirator and a proper respirator fit test are critical components of employee respiratory protection.
Fire service and law enforcement employees, as well as industrial companies and healthcare professionals have come to depend on properly fitting respirators for protection from respiratory hazards, such as chemical and environmental hazards, as well as airborne biohazards.

When implemented correctly, a respirator fit test program can help ensure that the highest respiratory protection levels are achieved through a properly sized and donned respirator.

Ventilation Test Instruments

TSI's full line of industrial ventilation test instruments are designed to accurately and reliably measure a wide variety of parameters important in monitoring and maintaining indoor environments.

Our instruments are optimized for ease-of-use, yet offer a range of advanced capabilities including data logging, that are critical in ensuring quality commercial ventilation.

MSP Solutions

MSP is now on the TSI website! In 2016, MSP became a Division of TSI, and has now officially moved to the TSI website. Please explore all the new pages, and leave us a comment at the bottom of this page!

Since MSP's founding in 1985, one of our core focuses has always been industry research. Our products can be separated into Pharmaceutical Inhaler Device Testing and Semiconductor Manufacturing (Liquid Source Vaporization Solutions and Surface Defect Inspection/Metrology).

You can find some of our product pages at the links below!

Abbreviated Impactor Measurement (AIM) Equipment

The Abbreviated Impactor Measurement (AIM) Method implies using a shorter process to characterize aerodynamic size. It has been promoted as an alternative to the labor-intensive full resolution cascade impactor methodology for APSD (aerodynamic particle size distribution) testing.

Using an AIM methodology for early stage development has become increasingly popular as both OINDP device and drug companies look for ways to shorten drug development. This technology has traditionally been limited to early development signals indicating rough drug particle size, and this equipment is still intended to categorize the entire dosage for effective mass balance exercises.

Aerosol-Neutralizers

Aerosol neutralizers are an essential piece of many aerosol research studies because aerosol particles dispersed by nebulization, combustion, or powder dispersion are usually electrostatically charged.

Normally, a high level of electrical charge is undesirable because it increases the particle loss to the walls of transport and sampling systems, or it can affect filter-efficiency measurements.

To ensure that instruments operating on the electrical mobility principle work properly, aerosol particles entering these instruments require an aerosol neutralizer to impart a predictable charge distribution to the aerosol particles.

Neutralizers can be separated into two categories based on how they charge the particles. One group is the radioactive neutralizers, which use the emission of alpha (positive) or beta (negative) particles from decaying radioactive elements to impart charge to the particles. The other group is the non-radioactive neutralizers, which use electricity to generate x-rays or produce high voltages that can charge the particles directly.

Cascade Impactors

TSI’s suite of cascade impactors can collect particles with aerodynamic diameters (cutpoints) from 10 nm to 10 µm, in 3 to 13 different size fractions, and at flow rates of 2, 10, 30 or 100 L/min. The number of stages determines the size resolution of the collected samples, and consequently determines the level of detail of the data generated from the quantitative analysis of these collected samples. MOUDI II impactors have rotating stages. When the stage is rotated relative to the nozzle plate, the impacted particles are deposited in a more uniform manner across the impaction surface. This increases the amount of particle mass that can be collected, reduces the probability of particle bounce and re-entrainment, and optimizes quantitative analysis of the collected samples.

To learn more about TSI’s cascade impactors, take a look at individual offerings or contact a member of TSI’s team today.

Certifier Flow Analyzers

TSI Certifier™ Gas Flow Analyzers are the trusted tool for biomedical testing professionals to improve efficiency in testing medical equipment, without sacrificing accuracy and reliability. They are unrivaled by traditional bench-top flow analyzers when ease-of-use and portability are top concerns. For biomedical testing of equipment done in hospitals, at third party service facilities, or in manufacturing applications, TSI Certifier™ Gas Flow Analyzers offer:

Easy to use configuration
Unique modular designs for
- Extreme portability
- Smallest size
- Future upgrade capability
Simple, intuitive functionality
Remote display for added visibility
Best value for the overall cost

Environmental Air Monitors

TSI’s environmental monitors measure size fractions of particles and ultrafine particles. They capture PM1, PM2.5, Respirable PM4, PM10, and Total PM.

The hard data you need to meet health and safety standards

Environmental air monitors help identify risks to communities and workers from breathable particles. With hard data on outdoor air quality and visibility, organizations can meet health and safety standards.

DustTrak products carry out short- and long-term outdoor surveys and remote monitoring. They operate in every season, 365 days a year, 24 hours a day. Our customers use them in a range of settings. They sample construction and remediation sites, open pit mines, research stations, wildfire/disaster areas, and more. Standard or customized enclosures protect DustTrak aerosol monitors in extreme indoor or outdoor environments.

Filter Testers

All filter test equipment from TSI, used for testing efficiencies of filter media and a variety of air filters, including high and very high-efficiency filters, respiratory filters, cartridges, and protective garments, is known for its simple and reliable operation.

All of our filter testers can determine the efficiency of filters using submicron poly- and monodisperse oil and/or sodium chloride aerosol. Additionally, TSI's filter test solutions are used to comply with various testing standards and regulations around the globe.

Liquid Flow Controller

Built upon field proven technology, the Turbo™ Liquid Flow Controller (LFC) 2950 was engineered to pair with MSP Turbo II™ Vaporizers to provide a reliable, high-performance liquid vapor delivery solution for semiconductor thin film deposition processes (including CVD, PECVD, ALD, and MOCVD). The diagram below shows how the LFC fits into the liquid vaporization system MSP offers.
The MSP Turbo™ Liquid Flow Controller provides ultra-fast response time − able to reach ±1% of set point within 300 ms, saving time and money by increasing throughput and reducing waste. Our new LFC also offers best-in-class accuracy, repeatability, and stability − delivering the high precision performance needed for 300 mm microelectronic processes. High accuracy, excellent repeatability and exception stability can reduce chamber/tool variation, allowing more tightly controlled processes leading to better yield.

Generic Drug Development Equipment

The USP and FDA provide blueprints for many methods and monographs to assist in accelerating regulatory acceptance.

To name just a few, there are well known and accepted generics for albuterol, fluticasone propionate, Salmeterol, or combinations. Another recent generic draft guidance from the FDA is Beclomethasone Dipropionate, utilizing an IVIVC approach.

There are also unique testing aspects to OINDPs that are outside of the focus of APSD and DDU tests. MSP, a Division of TSI, carries a full equipment set to perform dissolution testing, gravimetric testing, spray force testing, and testing the “cold Freon” effect. These types of products are also featured in the Copley Catalog.

Heat Stress Monitors

Heat stress management is often viewed as time-consuming and complex. Simplify your heat stress management with TSI’s intuitive QUESTemp° Series Heat Stress Monitors.

QUESTemp° Heat Stress Monitors are designed to quickly and accurately evaluate potential heat stress environments. These instruments deliver high-performance monitoring using Wet Bulb Globe Temperature (WBGT) sensing technology, the standard for heat stress management, and the calculation of a WBGT Index value.

Our monitors allow you to eliminate daily maintenance. Convenient stay time parameters per multiple standards help determine work-rest ratios, and IP 54 ingress rating helps protect units from exposure to dirt, dust, oil and water.

Our monitors are designed to withstand the rigors of everyday use in demanding environments, providing reliable monitoring throughout the life of the product.

In Vitro − In Vivo correlation IVIVC Equipment

In Vitro − In Vivo Correlation (IVIVC), as defined by the FDA, is a predictive mathematical model describing the relationship between the in vitro property of a dosage form and relevant in vivo response. The FDA has provided little to no guidance on IVIVC practices, but there is growing interest including an FDA draft guidance using IVIVC methods for a generic drug development.

A basic system is comprised of two more-realistic elements to give a more accurate representation of how a drug may behave in a specific type of patient’s respiratory system: the first is a more anatomically representative mouth and throat feature, and the second is a more representative breathing pattern.

Inhaler Testing Automation & Lab Organization

With automation equipment performing repetitive, time-consuming tasks, well-educated scientists and analysts can focus on completing higher-level, value-added work.

Along with freeing up analyst/scientist’s time, automated inhaler testing equipment in the lab provides additional benefits. Some of these benefits include:

Consistency: mechanical processing is always more consistent
Repeatability: automation eliminates large uncontrollable variables for more reliable results
Method transfer: easily prove effective method transfer from lab to lab, site to site, CRO to manufacturing, and analyst to analyst
Clarity: improves troubleshooting with less input variables into method and therefore analysis clarity
Cost: decreases long term cost of errors and troubleshooting

Laboratory Monitors & Controls

Ventilation demands, driven by fume hood exhaust flows and air change rates, means laboratories can use six times the energy of a similarly-sized office building. Operating one fume hood uses as much energy over the course of a year as three homes!

New Product Showcase

See the latest from TSI

Some TSI instruments will help answer research questions or provide compliance data. Others will enable manufacturing improvements or help companies protect their workers with precise measurements of air quality, respirator fit, dust exposure or other safety factor.
Our engineers are continuously innovating, developing, and improving. See the latest products and solutions from TSI.

About us

TSI Instruments Ltd are worldwide industry leaders in reliable and accurate testing & measurement tools.

Our products have undergone extensive research & testing for quality tools that exceed all your expectations. We have close working relationships with research institutions around the world and a fully committed team of over 500 employees who focus entirely on quality.

Our employees are based in facilities throughout Europe, North America and Asia. Customer support is provided from sales and service offices in locations such as UK, Germany, USA, China, India & Singapore.

Our European service department based in Buckinghamshire, UK ensures that our customers' instruments are calibrated and maintained by manufacturer in market-leading turnaround time.

We offer many solutions including Aerosol & Particle Research, Air Quality Monitoring, Chemical Analysis, Cleanrooms, Filter Testing, Fluid Mechanics, Hospital, HVAC Testing & Balancing, Laboratory Control, Metals, Nanotechnology, Occupational Health & Safety, Plastics Analysis & Identification & Safety & Homeland Security.

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