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uv dawl ultra violet
uv ultra violet light

lampa ultra-violet.
ultra-violet lamp.

bozza ultra-violet, ta' wavelength 254 nm.
ultra-violet lamp, wavelength 254 nm.

methyl violet biss jista' jintuża għall-ittimbrar ta' laħam frisk bl-inka.
only methyl violet may be used for stamping fresh meat with ink.

Ħares lejn il-pjanċa taħt dawl ultra-violet u sib il-pożizzjoni tal-faxxa li jkun fiha methyl erucate fil-kampjun b'referenza għall-faxxa intensifikata fil-kampjun li magħha jkun ġie miżjud il-methyl erucate (ara l-istampa).
view the plate under ultra-violet light and locate the band containing methyl erucate in the sample by reference to the intensified band in the sample to which methyl erucate has been added (see figure).