Phula la malasha limagawidwa m'magulu atatu: phula lamalasha lotsika kutentha, phula la malasha la kutentha kwapakati, ndi phula lamalasha lotentha kwambiri.
Phula la malasha limakhala ndi kachulukidwe kosinthasintha 1.17 ndi 1.19 magalamu pa kiyubiki centimita, kumasulira ku za 1.17 ku 1.19 matani pa kiyubiki mita.
Poyerekeza, kachulukidwe wa biotar nthawi zambiri amakhala mozungulira 1.2 magalamu pa kiyubiki centimita, zogwirizana ndi 1.2 matani pa kiyubiki mita.