umthamo otholakalayo wesirinji yethu ye-roux yi-10ml, 20ml, 30ml kanye ne-50ml, umthamo wesirinji ye-roux ungalungiseka kalula, udinga kuphela ukusetha umthamo ngokujika isondo lokusetha ngemuva komgqomo, thatha isirinji ye-roux engu-50ml. njengesibonelo, ungasetha umthamo kusuka ku-5ml kuya ku-50m.

le isirinji ye-roux kulula ukuyisebenzisa, ihlakazwa kalula ukuze ihlanzwe futhi ifakwe inzalo.