Tag Archives: testing



MOCON Permeation Analysers Used for Testing Nonwoven Materials in Medical Masks and PPE during COVID-19 Pandemic

    • Medical masks usually consist of three to four layers of porous nonwoven materials to provide protection while being easy to breathe through.
    • The key element of the mask is the center micro-porous layer (Melt Blown Polypropylene) that has the electrostatic adsorption/filtration function to trap viruses and other harmful tiny substances.
    • The outer layer has water repellent treatment so that liquid droplets will not penetrate it.
    • The inner layer is made to be comfortable to the skin and provides structural support for the center layer.
    • It is important to have the breathable mask block the liquid droplets while letting moisture vapor easily escape to prevent buildup between the face and mask.
    • The rate at which the moisture can leave the mask is evaluated by moisture/water vapor transmission rate (MVTR or WVTR).

PERMATRAN-W 101K Application to Breathable PPE

    • The PERMATRAN-W 101K instrument is capable of obtaining accurate and repeatable water vapor permeation test results of breathable materials, including critical nonwoven material layers in medical masks, surgical gowns, and other personal protective equipment (PPE).
    • The instrument conforms to the ASTM D6701 standard: Standard Test Method for Determining Water Vapor Transmission Rates (WVTR) through Nonwoven and Plastic Barriers.
    • WVTR rates are important to measure because they govern how much moisture will build up when using PPE.
    • Using the PERMATRAN-W 101K and ASTM D6701 for Quality Control in the manufacturing of nonwovens used for medical masks, gowns, and other PPE, ultimately ensures these medical supplies provide a comfortable and safe barrier.

The 7i Professional Force/Torque Indicator is designed to work with a wide range of Mark-10 remote force and torque sensors. With exclusive Plug & TestTM technology, all calibration and configuration data is saved within the sensor’s smart connector, not the indicator, allowing for true interchangeability. In addition, all sensors are fully compatible with other Mark-10 indicators.

The 7i features an industry-leading sampling rate of 14,000 Hz, producing reliable results for extremely quick- action tests. In addition to the 5i indicator’s functions, the 7i features high-speed continuous data capture and storage, with memory for up to 5,000 readings, at an acquisition rate of up to 14,000 Hz. The 7i Professional Force/Torque Indicator also features programmable footswitch sequencing, break detection, and 1st / 2nd peak detection. Coefficient of friction unit of measurement and a user-defined unit of measurement add flexibility for specialized applications. For productivity enhancement, the indicator also features automatic data output, data storage, and zeroing functions upon the completion of break detection,  averaging external trigger, and 1st / 2nd peak detection.

The 7i interfaces with Mark-10 test stands to permit functions such as break testing, dynamic load holding, PC control capability, and more. The included MESURTM Lite data acquisition software tabulates continuous or single point data.  Data saved in the indicator’s memory can also be downloaded in bulk.  One-click export to  Excel easily allows for further data manipulation.

 

Features:

  • Accuracy: ±0.1% of full scale + sensor
  • Sampling Rate: 14,000Hz
  • Power: AC or rechargeable battery
  • Outputs: USB, RS232, Mitutoyo, Analog, General purpose & Set Points
  • Configurable Settings: Digital filters, outputs, automatic shut off, Default settings, Averaging mode, External trigger, Password protection, Keytones, Audio alarms, Backlight, Calibration
  • Includes: Carrying case, USB cable, certificate of conformance