Sulfure Black BR ni ubwoko bwihariye bwirangi ryirabura rya sulfuru rikunze gukoreshwa mu nganda z’imyenda mu gusiga ipamba nizindi fibre selile. Ni ibara ry'umukara wijimye rifite amabara menshi yo hejuru, bigatuma rikwiranye no gusiga irangi risaba ibara ryirabura riramba kandi ridashobora kwangirika. Amazi yumutuku wumutuku na sulfuru yumukara byombi byakiriwe nabakiriya. Abantu benshi bagura sulfure umukara 220% bisanzwe.
Sulfure Black BR nayo yitwa SULFUR BLACK 1, mubisanzwe ikoreshwa hakoreshejwe inzira izwi nko gusiga irangi rya sulfuru, ikubiyemo kwibiza umwenda mu bwogero bugabanya amarangi hamwe n’ibindi bintu byongera imiti. Mugihe cyo gusiga irangi, irangi ry'umukara wa sulfuru ryagabanijwe muburyo bwa elegitoronike hanyuma bigahita bifata fibre yimyenda kugirango bibe ibara.