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Magnetic Particles

 

 

Magnetic particles are fine iron oxide particles with a high permeability (easily magnetized) and low retentivity (ability to stay magnetized). Magnetic particles typically range in size between 0.125 to 60 microns. Three methods are typically applied: dry non-fluorescent, wet non-fluorescent, and wet fluorescent. Dry particles are chemically dyed gray, red, black, and yellow to provide contrast against the background of the test surface. A powder applicator is used such as a squeeze bulb or spray gun. Wet suspension particles are suspended in an oil-based or water-based liquid vehicle or carrier. In water-based suspensions, additional conditioners are required such as wetting agents and corrosion inhibitors.

Products & Services
Thickness gages are used to make precise dimensional measurements on a wide variety of coatings and materials including steel, plastic, glass, rubber, ceramics, paint, electroplated layers, enamels, etc Search by Specification | Learn more about Thickness Gages
NDT supplies and accessories are components, ancillary equipment, standards, and consumable materials used in non-destructive testing (NDT). Search by Specification | Learn more about Nondestructive Testing (NDT) Supplies and Accessories
Nondestructive testing (NDT) probes and sensors include eddy current, ultrasonic, induction, hall effect and EMAT and other specialized transducers. Search by Specification | Learn more about Nondestructive Testing (NDT) Probes
Electrostatic precipitators use electrostatic forces to separate dust particles from exhaust gases. Search by Specification | Learn more about Electrostatic Precipitators
Screeners, classifiers and separators are used to separate materials by particle size. Search by Specification | Learn more about Separators, Classifiers and Screeners
Product Announcements
RNDT, Inc. - Magnetic Particle Testing
Magnetic particle testing is done by inducing a magnetic field in a ferro-magnetic material and dusting the surface with iron particles (either dry or suspended in a liquid). Surface imperfections... (read more)
Kurt Manufacturing - NADCAP Services For NDT
Kurt Manufacturing is an accredited NADCAP source to the Aerospace industry. Kurt can provide services on the following requirements:... (read more)
Air-Cure Incorporated - Dry-Fogging Systems
For Point Source Dust Emissions, from the Company who Knows PRB Coal Dust. (read more)
S+S Separation and Sorting Technology GmbH - SAFEMAG+PROTECTOR
The combination of SAFEMAG and PROTECTOR is the solution for the separation of both magnetic and non-magnetic metal contaminations. It prevents mould damage, reduces reject rates, and thus increases... (read more)
Malvern Instruments, Inc. - Free-fall dry powder feeder - Mastersizer S
Many dry materials are extremely fragile, being either crystalline or aggregated materials such as freeze-dried milk or coffee. If they are relatively free-flowing, they can frequently be best... (read more)
Non-Destructive Testing Services - NDT Laboratory Testing Services
Non-Destructive Testing Group, Inc. (NDT Group) is an independent NDT laboratory providing testing services in the automotive, aerospace, military, and pharmaceutical, just to name a few. We have... (read more)
Warner Electric - Magnetic Particle Clutches and Brakes
Warner Electric magnetic particle clutches and brakes are an excellent solution for many web tensioning processes that require adjustable, smooth torque while maintaining a clean, dust-free... (read more)
CCI Thermal Technologies Inc. - DriQuik™ QuikLITE Electric Halogen Infrared Oven
The DriQuik™ QuikLITE™ Electric Halogen Short Wavelength Low Density Oven is typically used in both low and medium infrared density applications where finesse controls and precise... (read more)
ProVent LLC - Fourtex Dual Cyclone Dust Collector
FOURTEX Hybrid Dual Cyclone Dust Collection Systems increase standard cyclone efficiencies 10X!... (read more)
 
Topics of Interest
Magnetic particle system refers to current flow or an external magnet that magnetizes a part. Magnetic poles created at flaws, cracks, or other discontinuities attract magnetic particles. The magnetic... (Read More)
Developers improve flaw visibility by pulling the penetrant retained in a cavity or crack to the surface. Developers are available in dry powder and aqueous forms, depending on the specific penetrant... (Read More)
Concentrating tables and density separators separate bulk materials or minerals based on the density (specific gravity), size and shape of their particles. Devices that fall within the classification... (Read More)
Electrozone sensing was originally developed for sizing blood cells. For industrial materials it has many drawbacks; tt is difficult to measure emulsions and impossible to measure sprays. Dry powders... (Read More)
The demand for pharmaceutical materials including finely ground active substances and excipients is growing. Injectable drugs and dry powder inhalants require particle-size distributions in the range... (Read More)
See more product announcements for Thickness Gages
Semiconductor Wafer Thickness Gage

Semiconductor Wafer Thickness Gage
MTI Instruments Inc.


All new DELTASCOPE® & ISOSCOPE® FMP10 & FMP30

All new DELTASCOPE® & ISOSCOPE® FMP10 & FMP30
Fischer Technology, Inc. / Coating Thickness Gages


DUALSCOPE® FMP40 Coating Thickness Gauge

DUALSCOPE® FMP40 Coating Thickness Gauge
Fischer Technology, Inc. / Coating Thickness Gages


11 See more product announcements for Thickness Gages