Ukusebenzisana
UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
English
Glass Stirring Rods: Cut and Flame-Polished
A laboratory stirring rod is a piece of solid glass, usually borosilicate, about half a centimetre thick and 10 to 40 cm long, with rounded ends. Rods are cut from a single long length of thin glass rod, and the ends are rounded, for example by flame polishing, so they cannot scratch the glassware: a scratched beaker or flask may crack when it is later heated. In flame polishing the glass surface melts briefly and surface tension pulls it smooth.
Oqalayo
30 minutes
Imiyalelo
1
1
Cut to length
Cut to length
Cut the long glass rod into pieces 10 to 40 cm long.
Izinto zokwakha zalesi sinyathelo:
Induku Yengilazi Ye-borosilicate1 as required2
2
Flame-polish the ends
Flame-polish the ends
Hold each end in the torch flame until the surface melts briefly and surface tension rounds it smooth. Let the rods cool.
Amathuluzi adingekayo:
Isibani sokuphephetha ingilazi sasetafuleniIzinto
1- 1 as requiredIsibambeli
Amathuluzi Adingekayo
1
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