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Phase Shift Test Slide HSE/NPL (5 band / 6 partial)

$0.00
$0.00
SKU: 400135
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PLEASE NOTE: Due to limited availability and extended manufacturer delay times we are currently NOT accepting web orders for this item. 
Please call for more information. 1.800.293.3003

 

Now approved by NIOSH for use in the USA. 4 band is no longer available.

The slide provides a means of checking the detection limit of phase-contrast microscopes and is intended primarily for use with the membrane filter method of measuring airborne asbestos fibers.

The test objects on the Mark II version, which is commercially available, are sets of ridges of resin, mounted on a conventional microscope slide, and immersed in a second resin of slightly lower refractive index. The finest ridges are too faint to be seen by most good-quality microscopes. The great majority of users who responded to inquiries found the slide a useful accessory.

Daily use of the Phase Shift Test Slide (5 Band) is required in Britain during measurement by the European Reference version of the membrane filter method.

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