Potlerper ikunena za njira yodziwira yomwe imagwiritsa ntchito zida zowunikira ndikuthandizira ma reagents kuti athe kupeza zotsatira pamalopo. Pang'ono, mayeso omwe amachitika kuzungulira pandelien ndi 'mayeso a bed mode '; Pankhani ya nthawi, 'mayeso aposachedwa ' atha kuchitidwa.