R011455-25ml | GC,≥99.9%(GC)（标准试剂）

R011456-20L | AR,99.5%

R011457-12X500ml | ACS,≥99.0%

R049125-4L | 光谱级, ≥99.7%

R011456-100ml | AR,99.5%

R220405-1g | 99.999% metals basis

R220404-1g | 99.999% trace metals basis

R220403-10g | ≤20mm, 99.9% (REO)

R220402-1g | 19mm 或更小, 99% metals basis

R220401-1g | 蒸馏枝形片状 99.95% metals basis