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Computer mainboard

Protocol number:	M070535
Industry:	Metallurgy, Environment
Feed Size:	< 2cm
Desired Fineness:	~250 µm
Quantity:	100 g
Recommendation:	We recommend using a Universal Cutting Mill PULVERISETTE 19 for comminution of this sample.

Result 1

	Universal Cutting Mill PULVERISETTE 19 Speed 300-3000 rpm
Equipment:	disk milling rotor with indexable inserts and knives made of hardmetal tungsten carbide + sieve cassette with 250µm trapezoidal perforation
Feed quantity:	96 g
Feed Size:	< 2 cm
Grinding time:	1 min
Final fineness:	< 250 µm
Comments:	The start size of ~ 2 cm (pre cut board) has been fine for a direct comminution with Universal Cutting Mill PULVERISETTE 19. With larger and flexible board pieces, it might be possible that the board may lie in front of the rotor and only the electronic devices will be scratched off. Then a manual pre cutting might be required. In this case, the complete sample amount got ground within 60 seconds. Even higher amounts of sample can be ground this way.