The PartSens 4.0 system is designed for the fast and direct determination of particulate contamination on surfaces. It excels in industrial manufacturing environments, where the focus is on detecting particles larger than 20µm and identifying singular, high-risk particles.

Cleanroom Monitoring
The PartSens 4.0 can be used to monitor the cleanliness of cleanrooms and other controlled environments according to ISO 14644-9 and ISO 14644-17.

Research
It can be utilized in research to study particle contamination and particle size distributions.

Quality Assurance

• Ensure that products and components meet cleanliness standards.
• Assess the efficiency of cleaning processes for components and surfaces.

Studies to Clarify Contamination Paths
The PartSens 4.0 can help identify sources of particle contamination.

• Measuring Uneven or Curved Surfaces
  • For surfaces that can't be measured directly, use TapeLift media to extract particles.
• Power On the Device
  • Turn on both the PartSens 4.0 base station and the measuring head.
  • The startup process takes about 30 seconds for each.
• Connect the Measuring Head
  • Attach the measuring head to the base station.
  • A confirmation message will appear once the connection is established.
• Select a Recipe
  • Choose a recipe that contains preset parameters for the specific measurement type.
• Enter Sample Information
  • Use the ID fields to add a unique identifier for each measurement.
• Position the Measuring Head
  • Place the measuring head on the surface you want to measure.
  • Make sure it’s on a level surface and remains still during the measurement.
• Start the Measurement
  • Begin the measurement from either the base station or the measuring head.
• View the Results
  • Results, such as particle count and size distribution, are displayed on the base station screen.
• Save or Export Results
  • Results are automatically saved on the device and named as follows: Date-Time-{content of ID Field 1}.
  • Export them to a USB drive or transfer them to a network drive.

Neutralizes Surface Influence: It eliminates the influence of surface characteristics like roughness, colour, and geometry on the measurement.
Zero-Count Baseline: The deep black colour and removable protective cover of the TapeLift media ensure a true zero-particle background before sampling.
Versatility: It allows for particle extraction from rough or curved surfaces that cannot be measured directly.
Consistent Background: It provides a consistent background for analysis, regardless of the particle colour (white, black, or transparent).

• Yes, the PartSens+ 4.0 model can differentiate between metallic and non-metallic particles, as well as fibres. Particles larger than 25µm can be classified as metallic or non-metallic, while those larger than 50µm can be recognized as fibres.

The system primarily uses the Feret size, determined through image analysis, to represent particle size. The Feret size is then categorized into classes defined by standards like ISO 16232, ISO 14644-9, and IEST-STD 1246, or by internal rules.

The threshold value of 3 for TapeLift pads signifies the digitization limit for evaluating the grey scale value of each pixel. This value, determined using a 10-sigma standard deviation calculation from zero-count measurements (n=10), ensures optimal sensitivity and accuracy.

Reference particles are applied to a TapeLift pad and measured using the appropriate recipe. The resulting data is then compared to the known particle sizes, allowing users to assess and adjust the system's accuracy.

The PartSens 4.0 system, using glancing light, is affected by particle colour or reflectivity to a limited extent. Transparent particles like glass or polymer spheres can create a halo effect due to their lensing properties (refraction), influencing apparent size.

The PartSens 4.0 system effectively handles challenges presented by different surface characteristics:

• Uneven or Curved Surfaces: TapeLift media enables sampling from surfaces with complex geometries.
• Rough or Grainy Surfaces: TapeLift media provides a smooth, consistent background for analysis, eliminating the influence of surface roughness.
• White Coloured Materials: The system's darkfield illumination and the black TapeLift media ensure a strong contrast, enabling the detection of particles on white surfaces.
• Holes or Accessibility Issues: TapeLift media allows for particle extraction from areas that are difficult to access directly.

The system boasts several features that enhance its portability and flexibility :

• Wireless Measuring Head: The measuring head is untethered, allowing movement up to 8m from the base station, making it suitable for measurements in confined spaces.
• Lightweight Design: Weighing only 280g, the measuring head enables fatigue-free use for extended periods.
• Ergonomic Base Station: The base station has an ergonomic handle for comfortable transport, despite weighing 8kg with batteries.
• Long Battery Life: High-capacity batteries provide up to 8 hours of operation, including recharging of the measuring head.

• Speed: It provides rapid analysis, with results available in less than 10 seconds.
• Simplicity: It is easy to use, requiring minimal training.
• Effectiveness: It delivers reliable and accurate results.
• Low Cost: It is a cost-effective solution compared to other methods like suction extraction or surface rinsing.
• Versatility: It can be used for various applications, including inspection of critical surfaces, incoming and outgoing product testing, quality control of processes, and evaluation of cleaning effectiveness.
• Statistical Process Control: It supports the implementation of SPC for surface cleanliness.
• Traceability: Reference particles ensure the traceability of measurements.
• Data Security: It offers secure data storage and transfer options.

The system offers the following display modes for presenting particle size distribution data:

Distributive: This mode shows the number of particles within each size category.
Distributive / 1000cm2: This mode normalizes the particle count to a standard area of 1000cm2.
Cumulative: This mode shows the total number of particles larger than or equal to a given size.
Cumulative / 1000cm2: This mode normalizes the cumulative particle count to a standard area of 1000cm2.

The base station is equipped with multiple communication interfaces for data transfer and external connectivity:

• USB: Two standard USB Type-A ports are available for connecting external storage devices like USB sticks and hard drives.
• Ethernet: An RJ-45: Ethernet port enables wired network connections for data synchronization and remote access.
• HDMI: An HDMI port allows connection to an external monitor or TV set for viewing data on a larger screen.

The system offers both battery and mains operation:

• Battery: The base station is equipped with replaceable, rechargeable, high-capacity lithium-ion batteries, providing up to 8 hours of operation without external power.
• Mains: The base station can be powered from the mains using a universal power supply (100-240V AC).

The base station has dimensions of 210mm x 386mm x 330mm (height x depth x width). The measuring head measures 110mm x 65mm x 65mm. The measuring head weighs 280g, while the base station weighs approximately 8kg when loaded with two batteries.

The PartSens 4.0 system characterizes particles as metallic or non-metallic by analysing their dynamic reflection behavior. Metallic particles typically exhibit strong, directional reflection patterns. In contrast, non-metallic materials display a gradual reflection pattern. For each segmented particle the pattern is analysed and evaluated. The recipe settings allows adjustment of the threshold. Metallic particles which do not reflect (after heat treatment, coated with dirt or paint) cannot be analysed.  While robust and practical, this method does not provide  chemical identification.

Both methods can be used for particle sampling the PartSens 4.0 system. For suction extraction the particles are separated on to a TapeLift Stripe. However, the lift-off method using TapeLift media, offers several advantages over suction extraction:

• Simplicity: TapeLift sampling is a straightforward process, requiring less complex equipment and procedures compared to suction extraction.
• Robustness: TapeLift media is less susceptible to environmental factors and variations in sampling technique, leading to more reliable results.
• Cost-Effectiveness: TapeLift media is generally less expensive than the equipment and consumables required for suction extraction.

The lift-off efficiency of TapeLift media is typically determined using the decay curve method, as outlined in ISO 16232. This method involves repeatedly sampling the same surface and analysing the decreasing particle counts to assess the efficiency of particle removal.

Another method for validating lift-off efficiency involves comparing the results obtained using TapeLift media with those from other established sampling methods using a statistically relevant number of samples from an evenly contaminated surface. This comparative approach helps demonstrate the reliability and consistency of TapeLift media for particle sampling.

The ParticleTrap Tray, available in small and large sizes, serves as a container and protective housing for TapeLift ParticleTraps. The trays protect the particle traps from damage during transport and deployment, ensuring the integrity of collected samples.

The sources highlight several key standards relevant to the PartSens 4.0 system and its use for cleanliness control:
-ISO 14644: This standard series addresses cleanrooms and associated controlled environments, covering aspects like classification, monitoring, and testing.
-ISO 16232: This standard focuses on road vehicles and outlines methods for assessing the technical cleanliness of components and systems.
-ISO 13322: This standard deals with particle size analysis using image analysis methods.
-VDA 19: This series of standards from the German Association of the Automotive Industry (VDA) provides guidelines for technical cleanliness in automotive manufacturing.
-IEST-STD-1246: This standard, developed by the Institute of Environmental Sciences and Technology (IEST), establishes procedures for characterizing and controlling particulate contamination in cleanrooms.
-ESCC
-VDI 2041

The "Mask Tool" is a software feature that allows for manual editing of recorded measurement images. This tool enables users to:

• Add Particles: A positive layer in the mask tool enables users to manually add particles to the analysis, accounting for any missed detections or compensating for specific application requirements.
• Remove Particles: A negative layer allows for the removal of particles that were incorrectly identified or are not relevant to the analysis.
• Connect Particles: The mask tool can connect particles, such as fibres, that may have been fragmented during image processing.
• Separate Particles: It allows for the separation of overlapping particles, improving the accuracy of size and count determination.

A typical measurement process with the PartSens 4.0 system involves the following steps.

• 1st Power On: Switch on both the base station and the measuring head, ensuring a connection is established between the two units.
• 2nd Select Measurement Mode: Choose either the "Single Measurement" or "Series Measurement" tab on the base station, depending on the desired analysis type.
• 3rd Select Recipe: Choose the appropriate recipe for the measurement from the drop-down menu.
• 4th Enter ID Information: Input a unique identifier for the measurement using the available ID fields, ensuring traceability and proper data organization.
• 5th Position Measuring Head: Carefully place the measuring head on the surface or TapeLift media to be analyzed, ensuring a flat and stable contact.
• 6th Initiate Measurement: Press the "Measurement" button on the base station or the corresponding button on the measuring head to start the measurement process.
• 7th Wait for Completion: Allow the system to complete the measurement and display the results on the base station screen. This will take between 5-15 seconds.
• 8th Review Results: Inspect the measurement image, particle size distribution histogram, and other relevant data to verify the results and make any necessary adjustments.
• 9th Save or Print Results: Saving the measurement data to the base station's internal memory is done automatically. Export results to an external storage device, or print a report using the optional Bluetooth thermal printer.

Surfaces that are uneven, curved, or bent cannot be measured directly with the PartSens 4.0 system. In such cases, using TapeLift media for particle extraction and indirect measurement is recommended.

The PartSens 4.0 system offers several features for post-processing and analysis of measurement data:

• Recipe Adjustment: The recipe used for the measurement can be adjusted to refine the analysis parameters and potentially improve the accuracy or relevance of the results.
• ID Field Modification: The ID fields associated with the measurement can be edited to correct any errors or update information.
• View Settings Customization: The display settings for the particle analysis can be adjusted to highlight specific features or enhance visualization.
• Mask Tool Editing: The "Mask Tool" can be used to manually modify the measurement image, adding, removing, connecting, or separating particles as needed.
• Screenshot Capture: Screenshots of the particle evaluation can be taken for documentation or presentation purposes.
   

By utilizing these post-processing features, users can refine and optimize the analysis of measurement data, extracting valuable insights for cleanliness control and process improvement.

Expose a TapeLift ParticleTrap for a known period of time. Measure the ParticleTrap using the PartSens 4.0 with a dedicated recipe. Input the exposure time in the recipe settings. The PartSens 4.0 software will automatically calculate the Illig value based on the detected particle count and the exposure time

Each measurement is stored in folder which contains a number of files:

• .tif: This file format stores the original measurement images, including different layers for darkfield and brightfield images, as well as mask layers.
• .xlsx: This file format contains the particle analysis results and measurement information, such as date, time, ID fields, histogram data, and recipe details.
• .csv: This file format provides the particle analysis results and measurement information in a comma-separated value format, suitable for import into other software programs.
• .png: This file format stores the Screenshot images. One screen shot is always included.

Automatic update: The base station can automatically request and install software updates when connected to a network with external access to the update server. Manual update: You can manually trigger an update request using the keyboard shortcut "Ctrl + u."Update process: The base station and the measuring head are updated in three separate software packages. The base station will restart after each software package update. For base stations with MOPA versions older than 1.4.0  contact your local distributor for assistance.

The wireless connection between the measuring head and the base station has a maximum range of 10 metres.

Shelf Life/Expiry Date

• Formula: Manufacture Date + 2 years = Expiry Date

Manufacture Date

• Calculated from the Expiry Date:
  Manufacture Date = Expiry Date - 2 years

Lot/Batch Number(s)

• No specific batch numbers are assigned.
• Each order is manufactured from a single batch.
• If the expiry date is known, the batch is identified based on it.

Example
For the order PO 7002xxx, the label provides the following information:

• Expiry Date: 12-2025
• Storage Temperature: 8° – 20°C
  • Production Date: 12-2023
  • Batch Number: 12-2023

Place the measuring head in the charging cradle located on top of the base station. The charging process takes approximately 1-1.5 hours. You can also charge the measuring head using the external charging station (sold separately).

• Measuring head is not starting or only displaying the PartSens logo: Check the on/off switch on the darkfield board. After prolonged storage, the measuring head may need to be charged for up to 24 hours.

• Measuring head battery status is always showing 0%: Deeply discharged batteries may require charging for up to 24 hours.

• Measuring head not connecting to the base station: Manually connect the measuring head using the key combination "Ctrl + s". Ethernet connection on the base station may slow down the automatic connection establishment.

• Repeated update requests: The base station and measuring head are updated in three separate parts, potentially causing up to 3 consecutive update requests. If the requests persist beyond 3 times, initiate an update request upon starting the base station.

• Problems setting up a network drive: Verify the network drive path, username, and password for accuracy. Check the network drive's configuration settings, including IP address, MAC address, and permissions.

•It cannot directly measure particles on uneven, curved, or bent surfaces. You need to use TapeLift media for these surfaces.
•While PartSens+ 4.0 can differentiate between metallic and non-metallic particles based on gloss behaviour, it cannot determine metallic conductivity or magnetic properties. Further material analysis is needed for that.
•The PartSens 4.0 cannot measure particles smaller than 1 µm.
 

Refer to the PartSens 4.0 user manual. For application specific or site specific consulting please contact OMT or your distributor. International consulting can be booked as well.

• It provides fast measurement and immediate results.
• It is easy to use.
• It has a low cost of equipment and consumables.
• It is mobile and versatile.
• It is self-sustaining, meaning that it can be used for analysis, data storage, and power without the need for external connection (electricity, network).
• It uses glancing light technology, which allows for reproducible and highly accurate results.
• It eliminates the need for subjective measuring methods like visual inspection.
• It eliminates the need for multi-stage procedures like surface rinsing and subsequent filter analysis.

The PartSens 4.0 uses glancing light technology, which illuminates the surface to be measured at a very shallow angle from the sides. Light scattered by particles on the surface is then detected by a camera, and the size and number of particles are determined by analysing the scattered light. The measurement result, is immediately shown on the device display via wireless transmission. Data is automatically stored in the particle counter for archiving or for later comparative measurements. The measurement result can optionally be output via an external printer or synchronised to local or network storage.

A recipe in PartSens 4.0 is a collection of settings that define how a measurement is taken and analysed. Recipes ensure consistent and reproducible measurement results.
You can create custom recipes or use the pre-installed standard recipes for TapeLift media and reference particles.

Besides its primary use in the automotive industry, the PartSens 4.0 system has applications in various sectors :

• Semiconductor and Aeronautics: These industries demand the detection of smaller particles and focus on the overall particle count rather than individual particle sizing.
• Cleanrooms and Controlled Environments: It provides a rapid, dry method for monitoring particulate contamination on surfaces, complementing traditional aerosol particle counters, which are less effective for particles larger than 5µm.
• Space Industry: While the space industry often uses expensive cleaning and packaging methods to manage contamination, the PartSens 4.0 offers a more cost-effective approach by enabling partial sampling and statistical evaluation of contamination.

The PartSens 4.0 system can detect particles ranging in size from greater than 1µm to over 3000µm. The resolution of the system is 1µm.

While particles are grouped into size classes, uncertainties exist between the median of the class and its limits. The system assumes a narrowest value of ±20µm for the 10-50µm class and applies this to all other classes. For instance, the class of 600-1000µm corresponds to 800µm ±20µm.

The PartSens 4.0 system is highly valuable for implementing SPC in contamination control due to its ability to quickly gather data and present results in real time. Its features enable users to establish baseline data, define control limits, perform routine sampling, and monitor contamination levels, ultimately contributing to process improvement, documentation, and compliance.

Reference particles are steel granules (AISI 316 L) of known sizes used to verify and calibrate the PartSens 4.0 system. These particles, characterized using certified methods and equipment, help ensure accurate particle size determination and system traceability.

No. Systems sold before February 2024 may require software updates in order to utilize reference particles effectively. The versions > 1.4.8 are essential for accurate measurements with reference particles.

The system allows for both direct and indirect measurements of surface contamination :

• Direct Measurement: This involves directly measuring the surface of interest, provided it meets the system's requirements for flatness and accessibility.
• Indirect Measurement: This involves using sampling materials like TapeLift media to extract particles from surfaces that are uneven, curved, or otherwise unsuitable for direct measurement.

The PartSens 4.0 system supports monitoring controlled environments using:

• Witness Plates: Witness plates are passive sampling devices placed in the environment to collect settling particles over time. The system can then analyse these plates to assess the level of particulate contamination.
• Particle Traps: Particle traps, like the TapeLift ParticleTrap, are specifically designed to capture settling particles over defined periods. The system analyses these traps to provide data on particle deposition rates and size distribution.

The PartSens 4.0 system prioritizes data security and offers various storage options:
Onboard Storage: The base station can store up to 300 single measurements.
Network Storage: Data can be automatically synchronized with a network storage for backup and further analysis.
Fixed IP Address: For enhanced security, a fixed IP address can be assigned, and data transfer can be restricted to one-way upload.
User Permissions: Permissions and roles can be defined to control access to functions and settings.
USB Storage: As an alternative, USB storage devices can be used for data transfer.

Each measurement is stored in folder which contains a number of files:
.tif: This file format stores the original measurement images, including different layers for darkfield and brightfield images, as well as mask layers.
.xlsx: This file format contains the particle analysis results and measurement information, such as date, time, ID fields, histogram data, and recipe details.
.csv: This file format provides the particle analysis results and measurement information in a comma-separated value format, suitable for import into other software programs.
.png: This file format stores the Screenshot images. One screen shot is always included.  

The PartSens 4.0 system allows for separate alarm settings for particles, metallic particles, and fibres for each size category, as well as for the PAC value and Illig value. When an alarm limit is exceeded, the system highlights the relevant data point on the display and printout.

The measuring head communicates with the base station wirelessly using a 2.4GHz WLAN connection. This wireless link allows for flexible operation, with a maximum range of up to 10 meters between the measuring head and base station.

The charging cradle on the base station provides a convenient and secure location for charging the measuring head. When placed in the cradle, the measuring head automatically begins charging, ensuring it is ready for use.

For safe transportation or shipping, the system should be packed in its designated transport case or original packaging. The lithium-ion batteries have to be removed from the base station and placed in the designated compartments within the case or packaging. Follow national and international regulation for shipments of batteries. 

The mobile measuring head has a bottom surface area of 48mm x 48mm. The actual contact surface area is 4x 1mm2 where small pin like feet touch the surface.

Yes, for definitive chemical identification, methods like LIBS (Laser Induced Breakdown Spectroscopy), REM-EDX (Scanning Electron Microscopy with Energy-Dispersive X-ray Spectroscopy), and ESR (Electron Spin Resonance) may be required. The TapeLift media can be directly used in LIBS and REM-EDX analyses without additional preparation steps.

• No Fixation Required: TapeLift media can be directly analyzed without additional fixation steps.
• Neutral Background: It provides a neutral background profile, minimizing interference during analysis.
• Particle Retention: It securely holds the collected particles, preventing loss or contamination during transfer and analysis.

Suction extraction methods for particle sampling present several challenges:

• Complex Procedures: Suction extraction involves carefully controlling parameters like flow volume, flow speed, nozzle distance, movement speed, and sampling time, requiring strict adherence to procedures.
• Environmental Sensitivity: The effectiveness of suction extraction can be influenced by environmental factors, requiring controlled conditions for accurate results.
• Cost: The equipment, consumables, and controlled environments needed for suction extraction can lead to higher costs.

In the lab TapeLift media has a lift-off efficiency of 96-98% for particles larger than 15µm. This high efficiency ensures that the majority of relevant particles are captured during sampling.

The system's ability to measure particle deposition is crucial for:

• Monitoring Cleanliness Trends: It enables tracking changes in contamination levels over time, helping identify potential sources of contamination or evaluate the effectiveness of cleaning procedures.

• Assessing Environmental Control: It provides data on particle deposition rates, allowing for assessment and optimization of environmental control measures in cleanrooms and controlled environments.

• Evaluating Particle Settling: It allows for the study of particle settling patterns and the influence of various factors on particle deposition, contributing to a better understanding of contamination dynamics.

The ParticleTrap Tray is designed with several features for practicality and ease of use:

• Conspicuous Design: The trays are designed to be easily visible, minimizing the risk of accidental contamination or mishandling.
• Protected Transport: The trays can be closed for secure transport, safeguarding the collected samples.
• Deactivation Time Recording: An opening on the back allows for recording the deactivation time when the ParticleTrap is inserted, providing traceability. Alternatively, a QR code or a barcode can be displayed.
• Stackability: The trays can be stacked for efficient storage and transport.

The PartSens 4.0 system software is available in German, English, French, and Japanese. This multi-language support makes the system accessible to a broader user base.

While the "Mask Tool" provides flexibility for image editing, it is recommended that post-processing using this tool be carried out by qualified specialists to ensure data integrity and avoid unintended modifications. Improper use of the mask tool could potentially introduce bias or inaccuracies into the analysis.

When positioning the measuring head, it's crucial to ensure the following:

Flat Surface: Place the measuring head on a perfectly flat surface to avoid distortions in the measurement.
Light Exclusion: Shield the measuring head from any external light sources as the PartSens 4.0 relies on the principle of darkfield microscopy for accurate particle detection.
Stable Placement: Maintain a stable position of the measuring head throughout the measurement to prevent motion blur or image artifacts.

Series measurements involve taking multiple individual measurements in sequence to obtain a more comprehensive analysis of a larger area or to improve statistical representation. The steps involved are similar to single measurements, with the following additions:

• Repeat Measurements: After each measurement, reposition the measuring head to a new location on the surface and repeat the measurement process.
• End Series: Once all desired measurements are taken, use the "End Series" button on the base station or measuring head to conclude the series.
• Combined Evaluation: The system will then combine the individual measurements into an overall evaluation, providing a summary of the particle count and size distribution across the entire sampled area.

The Illig value is a measure of particle fallout (PFO) over a specific time period. It is calculated using the sum of all particles in defined size channels, standardised to 1000 cm2 and 1 hour. In contrast to the PAC, particle size is taken into account by using weights. The weights for the each particle size category used to calculate the Illig Value are published in the VDA19.1 standard.The Illig is relevant for monitoring controlled environments and assessing contamination levels over time especially when using SPC.

The Percentage Area Covered (PAC) indicates the percentage of the analysed area covered by particles. What is the significance of the PAC value? The PAC value provides insights into the density of particle contamination on the surface. It indicates a concentration of contamination. At a high PAC value, greater than 3%, there are  potential particle overlays, which can lead to inaccurate size determination. 

• PAC ≤ 3%: Generally considered acceptable, indicating a low risk of particle overlays.
• PAC > 3%: Suggests potential particle overlays. Review the measurement results carefully and consider resampling with a lower particle load.
   

The measuring head connects to the base station wirelessly. The connection is usually established automatically when both devices are powered on. In case the connection is not established, you can manually connect the measuring head using the keyboard shortcut "Ctrl + s". If a different measuring head as the last connected head needs to be connected us the keyboard shortcut "Ctrl + s".

Yes, the PartSens 4.0 can be operated using the supplied lithium-ion batteries, providing up to 8 hours of use on average.

The PartSens 4.0 does not have specific cleaning procedures. The base station can be placed in a clean surroundings, the measuring head will touch surfaces on the bottom side only. If necessary, place the head in a small plastic pouch with the opening at the bottom side. Use 70% isopropyl alcohol and a soft cloth to clean the plastic surfaces of the base station and measuring head, as well as the touch screens.

Do not use abrasive cleaners or apply excessive pressure on the touch screens.

Cleaning the optical components inside the measuring head is not required. This should be done by an authorised  distributro or the manufacturer. Avoid getting liquids inside the measuring head or base station.

Do not attempt to repair or service the device yourself. All maintenance and repairs should be carried out by qualified personnel authorised by the manufacturer. Use only the provided power supply unit and batteries.Store and transport the device and accessories in the provided transport case or original packaging. Remove the lithium-ion batteries from the device during transport and place them in the designated compartments of the transport case or original packaging. Improper use can lead to injury. Follow the instructions in the manual carefully. Dispose of batteries properly according to local regulations.

Ensure the measuring head is properly calibrated. Use a clean and particle-free TapeLift media for each measurement. Avoid touching the adhesive surface of the TapeLift media. Apply consistent pressure when sampling particles with the TapeLift media. Avoid measuring surfaces with excessive particle loads. High PAC values can indicate particle overlays and affect accuracy. Ensure adequate lighting conditions during the measurement. Avoid direct sunlight or strong ambient light, as this can interfere with the glancing light illumination.
 

Contact your local distributor or OMT GmbH directly.
OMT GmbH
Schafwäsche 8,
71296 Heimsheim, Germany

✉️ info@omt-gmbh.eu | 🌐 www.omt-gmbh.eu
📞 Tel: +49 (0) 7033 5374 74 | 📠 Fax: +49 (0) 7033 5374 75

Distributor details for various countries can also be found in the manual and on the OMT website.