Tissue Grinder DUALL® with PTFE Pestle and Glass Tube, 1 ml Kontes

What is DUALL?

Conical shape on the lower portion of the pestle:

• Conical shape provides a relatively large surface area for grinding, amking this type the most efficient.
• Sample is progressively ground to a smaller size as the pestle is spun and lowered into the tube.
Homogenate is produced as the sample is forced through the cylindrical section of the tube.
• Ground glass pestle versions are best suited for connective tissues such as muscle, heart and lung.
• PTFE pestle versions should be used for homogenizing soft tissues such as brain and liver.

How to choose the correct tissue grinder?

1. Conically shaped pestles homogenise better than pestles with a rounded shape.
2. Ground glass to ground glass surfaces homogenize better than smooth glass to smooth glass or PTFE to smooth glass.

Using these two rules, a glass DUALL tissue grinder produces the finest homogenate while a glass Dounce will produce a relatively coarse homogenate.