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Outer graphite crucibles 775-433 Eltra 90185 Alpha AR433 for ONHp Elemental AnalyzerLECO 775-433 outer Graphite Crucible for applications requiring uniform crucible with 775-431 and 775-892 Crucibles. Eltra 90185 Alpha AR433. Manufacturer of inner Graphite Crucible for LECO TC-400 TC-500 Ro-416, Eltra OH900 ON900.