Tissue grinders disperse and disrupt small tissue samples by being repeatedly pressed or sqeezed between two hard surfaces. Usually, one surface is concave shaped (the mortar) and other convex (the pestle). The motar can also be test tube-shaped, in which case a tight-fitting pestle having a clearance of 0.1 - 0.2 mm is used. Tissue is repeatedly sqeezed through this mortar-pestle clearance.
Soft tissue samples with high water content (example; liver, muscle, fruits) frozen to and kept at dry ice- or liquid nitrogen temperatures are very easily fractured into powder using the crushing action of a motar and pestle. This special process is called cryogrinding.
Another catagory of mechanical homogenizer that also operates, at least in part, by similiar hard surface to hard surface grinding forces are beadbeaters (aka, bead mills).
The BioVortexer™ is a battery-powered motor drive designed to rotate stirring rods or plastic pestles in 1.5 ml microtubes. Rotating at thousands of revolutions per minute, it makes short work of dispersing centrifugal pellets or grinding small tissue samples.
Cat. No. 1083MC, BioVortexer Stirring Kit. Includes motor, batteries and 100 - 1/8"X3" stirring rods.
Cat. No. 1083, BioVortexer, motor only. Batteries included.
Cat. No. 183, Additional BioVortexer polypropylene stirring rods, 1/8"X3" (500 count).
Cat. No. 1017MC, BioVortexer Grinding Kit. Includes motor, batteries, 100 SpiralPestles™ with matching 1.5 ml microvials and sample of SpiralPestle™ Grinding Beads.
Cat. No. 1017, Additional SpiralPestles™ with matching 1.5 ml microvials (100 count) and sample of SpiralPestle™ Grinding Beads.
The Cryo-Cup Grinder is a mortar and pestle specifically designed to pulverize and powder plant and animal tissue samples at liquid nitrogen temperatures. It gives superior results compared to conventional ceramic mortar-pestles.
Cat. No. 206, Cryo-cup Grinder, complete, includes two different size polypropylene pestle balls. See below for extra cups (mortars) and pestle balls.
Cat. No. 206C, Extra s.s. mortar with insulated cup. (Pestle not included)
Cat. No. 206PP138, Polypropylene ball, 1 3/8 inch dia.
Cat. No. 206PP178, Polypropylene ball, 1 7/8 inch dia.
Cat. No. 206SS138, Stainless steel ball, 1 3/8 inch dia.
Cat. No. 206SS178, Stainless steel ball, 1 7/8 inch dia.
The CryogenicTissueGrinder is a high-speed blade mill that grinds 1-10 grams of microbial, plant, animal and human tissue having high water content (~70%) to a fine powder in the presence of excess dry-ice. At solid CO2 temperatures, the hard and brittle sample is powdered in seconds. Pulverizing tissue at very low temperature stabilizes intercellular biochemicals and prepares the tissue for rapid extraction in an appropriate liquid media.
Cat. No. CTG111, 120 volts
A beautiful, hand-made mortar & pestle sculptured out of onyx stone.
The NEW SpiralPestle™ and 1.5 ml Microtube grinder is an significant improvement over traditional smooth-walled polypropylene pestle and tube combinations. It is used to homogenize culture cells and small samples (<100 mg wet weight) of soft tissue such as liver, brain, and muscle. It can also be used to disperse centrifugal pellets, precipitates, and other solids.
Cat. No. 1017, SpiralPestles™ with matching 1.5 ml microvials (100 count) and a sample of Spiral Grinding Beads.
Cat. No. 1017MC, BioVortexer™ Tissue Grinding Kit. Includes BioVortexer motor drive, batteries, 100 SpiralPestles™ with matching 1.5 ml microvials and a sample of SpiralPestle™ Grinding Beads.
Cat. No. 1017GB, SpiralPestle™ Grinding Beads. Glass beads for pestle and microvial grinders, 50 cc bottle with pour spout.
All stainless steel Potter-Elvehjem style tubular mortar and pestle. Superb temperature control during use, shatter-free, easy to clean.