12×32mm 螺纹样品瓶，限定容量步进式样品瓶

12×32mm 螺纹样品瓶，限定容量步进式样品瓶, volume 0.25 mL, clear glass vial,

step vial, large opening (with glass insert)

12×32mm 螺纹样品瓶，限定容量步进式样品瓶, volume 0.25 mL, amber glass vial,

step vial, large opening with glass insert