[08751-100G] 4-Amino-3-hydroxy-1-naphthalenesulfonic acid for spectrophotometric det. of Si, ≥90.0% (CHN) 287,400원
[08751-25G] 4-Amino-3-hydroxy-1-naphthalenesulfonic acid for spectrophotometric det. of Si, ≥90.0% (CHN) 81,300원
[Z402966-1EA] Büchi® evaporating flask, pear-shaped volume 100 mL, glass, joint: ST/NS 24/40 245,850원