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This is the original version (as it was originally made). Dim ond ar ei ffurf wreiddiol y mae’r eitem hon o ddeddfwriaeth ar gael ar hyn o bryd.
5.—(1) Paratoi'r sampl—
(a)Rhaid i'r sampl fod yn lân ac yn rhydd o saim neu fater arall sy'n debygol o effeithio ar y prawf;
(b)Golcher y sampl mewn toddiant sy'n cynnwys sebon hylif yr aelwyd ar dymheredd o tua 40 °C. Rinsier y sampl yn gyntaf mewn dŵr tap ac yna mewn dŵr wedi'i ddistyllu neu ddŵr o ansawdd cyfatebol. Draenier y sampl a'i sychu i osgoi unrhyw staen. Ni ddylid trafod yr arwyneb sydd i'w brofi ar ôl iddo gael ei lanhau.
(2) Penderfynu plwm a/neu gadmiwm—
(a)cynhelir prawf ar y sampl a gafodd ei baratoi yn y modd hwn o dan yr amodau a osodir yn Atodlen I;
(b)cyn cymryd y toddiant prawf ar gyfer penderfynu plwm a/neu gadmiwm, homogeneiddier cynnwys y sampl drwy ddull priodol, sy'n osgoi unrhyw golli toddiant neu'n osgoi sgrafellu'r arwyneb sydd i gael ei brofi;
(c)cynhalier prawf gwag ar yr adweithydd a ddefnyddir ar gyfer pob cyfres o benderfyniadau;
(ch)cynhalier y penderfyniadau ar gyfer plwm a/neu gadmiwm o dan amodau priodol.
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