Similar to 186-885450-series but with plastic safety coating. Plastic coating on tube will contain the homogenate if the tube breaks or cracks during motor driven homogenization. The coating is transparent, allowing an unobstructed view of the homogenate. Replacement components are available and completely interchangeable. Clearance between pestles and tubes is 0.004" to 0.006". Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements.
Replacement pestles are 186-885451-series.