Available in opaque black for light-sensitive samples High-quality standards enable high RCF ratings in our premium conical tubes. Writing areas and flat polyethylene caps provide ideal opportunities for labeling. High-quality standards enable high RCF ratings in our premium conical tubes.…

12, 15, 30 and 60 mL sizes Contoured shape and heavy-wall neck increase grip for easier use with pipets and syringes. The 150 mL capacity (HD20630E) bulb has reinforcing ribs for use with large pipets.

Fits small and large pipets Filler features a white ABS attachment containing a silicone conical adapter that gently seals around pipets without twisting. Pipet does not contact hard plastic, which reduces the risk of cracking and chipping. Just squeeze the bulb, press pipet lightly into…