S.L. 437.55 Art. 5sediment: for feed of 0,50 mm light or glassware need stiff hairs.

Equipment and accessories 5.1. Analytical balance (accuracy of 0,01 g except for the concentrated 0,001 g) 5.2. Material for grinding (grinding mill or a mortar, especially containing > 15% fat on analysis) 5.3. Sieve fitted with sieve mesh with square meshes of width maximum 5.4. Separation funnel or conical bottomed settling beaker 5.5. Stereomicroscope (minimum 40' magnification)

5.6. Compound microscope (minimum 400' magnification), transmitted polarised light

5.7. Standard laboratory glassware All equipment shall be thoroughly cleaned. Separation funnels and washing in a washing machine. Sieves need cleaning using a brush with