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Pickford Phase Contrast Test Slide

An alternative to the HSE/NPL Phase Contrast Test Slide is now available, which incorporates the latest nano-metre fabrication production processes; is of rugged construction; and is easy for analysts to use.

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Comparison of HSE/NPL and Pickford Test Slides.

Using the Pickford Test Slide

Instructions, Acceptance Criteria and Corrective Action.

History of HSE/NPL Test Slide

Summary of HSE/NPL Test Slide History.

Development of Pickford Test Slide

Genesis and Rationale of Pickford Test Slide

Slide Manufacturing Processes

Nano-metre fabrication techniques, Slide assembly and testing the Pickford Test Slide

Pricing, Purchase & Cart

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The Pickford Phase Contrast Test Slide has been designed to be an alternative and eventual replacement of the HSE/NPL Phase Contrast Test Slide.

The HSE/NPL Test Slide was designed 40 years ago using technology of the day, and has been invaluable in trying to standardise microscope and analyst performance around the world, for laboratories determining airborne asbestos fibre concentrations.

The Pickford Phase Contrast Test Slide has been designed using state of art, semiconductor, nano-metre fabrication processes, and each Slide is accompanied by a test certificate issued by the United Kingdom Heath and Safety Executive (UK HSE) in compliance with HSG248, 2021.

The new Test Slide is of rugged stainless steel construction; easier to use; based on pure phase objects designed to test an analyst and microscope’s limit of visibility in a similar fashion to viewing very fine asbestos fibres; and is believed to comprise more stable and better tested optical components when compared with the HSE/NPL Slide.