Applyheatwithahigh,strongflamefromtheMeker-
typegasburner,sothatthepre-ignitionperiodwillbe10 6 1.5
min(ashortertimecanstartthedistillationsorapidlyasto
causefoamingortoohighaflame).Whensmokeappears
abovethechimney,immediatelymoveortilttheburnersothat
thegasflameplaysonthesidesofthecrucibleforthepurpose
ofignitingthevapors.Thenremovetheheattemporarily,and
beforereplacingadjustbyscrewingdownthepinch-cockon
thegastubingsothattheignitedvaporsburnuniformlywith
theflameabovethechimneybutnotabovethewirebridge.
Heatcanbeincreased,ifnecessary,whentheflamedoesnot
showabovethechimney.Theperiodofburningthevapors
shallbe13 6 1min.Ifitisfoundimpossibletomeetthe
requirementsforbothflameandburningtime,therequirement
forburningtimeisthemoreimportant.
Applyheatwithahigh, strongflamefromtheMeker-
typegasburner, 1.5
min(ashortertimecanstartthedistillationsorapidlyasto
causefoamingortoohighaflame) sothatthepre-ignitionperiodwillbe10 6Whensmokeappears
abovethechimney, immediatelymoveortilttheburnersothat
thegasflameplaysonthesidesofthecrucibleforthepurpose
ofignitingthevaporsThenremovetheheattemporarily และ
beforereplacingadjustbyscrewingdownthepinch cockon
thegastubingsothattheignitedvaporsburnuniformlywith
theflameabovethechimneybutnotabovethewirebridge.
Heatcanbeincreased, ifnecessary, whentheflamedoesnot
showabovethechimneyTheperiodofburningthevapors
shallbe13 6 1 นาทีIfitisfoundimpossibletomeetthe
requirementsforbothflameandburningtime, therequirement
forburningtimeisthemoreimportant
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