Dhaqdhaqaaqa socodka qulqulka Naqshadeynta dheecaanka dareeraha (CFD) waxay yareysaa in la dhigo 40% marka loo eego shaashadda caadiga ah.
Isku-darka maaddada : Ku habboon in loo yaqaan 'sturries ay ku jiraan:
- Birta birta (ph 4-12)
- Ka fiirso (ilaa 60% adkaha)
- Slurry (Cabbirka walxaha ka kooban 50mm)
Dulqaadashada rakibaadda : waxay dejisaa si qaldan loo yaqaan 'anular khalkhallay' illaa 3 ° iyo dib-u-dhac meesha ugu jira illaa 5mm.