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Calcium sulfide, 99.9% (metals basis excluding Sr), Sr typically 500 ppmBrand: ALFA-AESAR CAS: 20548-54-3 SKU: 013121
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Bismuth(III) selenide, Vacuum Deposition Grade, 99.999% (metals basis)Brand: ALFA-AESAR CAS: 12068-69-8 SKU: 013126
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