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Knoop Test Blocks

Product Categories
Grit Size
Backing Type
Capacity
Colour
Colour and Diamond Size
DGD Colour
DGD Ultra Colour
Diameter
Micron
Size/Dimensions
Style
Usage
Voltage
Volume
Blade Diameter
Hardness Scale
HK 0.025(3)
HK 0.05(3)
HK 0.1(3)
HK 0.2(3)
HK 0.3(3)
HK 0.5(7)
Hardness Value
201-300(6)
301-400(1)
401-500(6)
501-600(1)
601-700(1)
701-800(6)
801+(1)
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Knoop Test Block Guide
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Please note: quantities and descriptions are for reference only. Please refer to our 2025 Product Catalog for exact quantities and sizes.
Buehler 2025 Catalog