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Tissue Grinders

Tissue grinders disperse and disrupt small tissue samples by being repeatedly pressed or squeezed between two hard surfaces. Usually, one surface is concave-shaped (the mortar) and other convex (the pestle).  The mortar can also be shaped to the geometry of the test-tube, in which case the pestle is tight fitting with a clearance of 0.1 - 0.2 mm between the inner walls of the test tube and the pestle surface. The tissue is repeatedly squeezed through this mortar-pestle clearance.

Soft tissue samples with high water content (example; liver, muscle, fruits), frozen and kept at dry ice- or liquid nitrogen temperatures, are very easily fractured into powder using the crushing action of a similarly cooled motar and pestle.  This special process is called cryogrinding.

Another category of mechanical homogenizer that also operates, at least in principle, by "hard surface to hard surface" grinding forces are beadbeaters (aka, bead mills).

BioCryo Tissue Grinder

BioCryo Tissue Grinder

The Bio Cryo Tissue Grinder is a high-speed blade mill. The tightly sealed, 3/4 cup capacity (~200 ml) grinding chamber has a sealed pour spout for optional addition and removal of extraction liquids after "dry" grinding.

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BioVortexer

BioVortexer

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.

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Cryo-Cup Grinder

Cryo-Cup Grinder

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 pestle ball, 1  3/8 inch dia.
Cat. No. 206PP178, Polypropylene pestle ball, 1  7/8 inch dia.
Cat. No. 206SS138, Stainless steel pestle ball, 1  3/8 inch dia.
Cat. No. 206SS178, Stainless steel pestle ball, 1  7/8 inch dia.
Cat. No. 206H, Spare handle for use with pestle ball

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Mini Leaf Crusher

Mini Leaf Crusher

The Mini Leaf Crusher™ is a hand-held clamp designed for sampling plants and their pathogens in the field and other locations distant from the analytical laboratory.  Used in combination with its unique BioSpec DNA Sample Card™, the intracellular contents of leaves, stems, and root tissue are crushed by clamping at thousands of pounds per inch²,  The released cell extract is immediately captured and stabilized on special cellulose filter paper located within the compact Sample Card.  Multiple samples can be collected in a day and no preservatives or low-temperature storage is required for transit of the card(s) to the laboratory for subsequent RNA or DNA analysis.

Using published techniques, the bound nucleic acids can be then be extracted in minutes from the special filter paper in the Card in a purified state ready for direct application in downstream PCR-based methodologies or genome sequencing.  The Card alone has additional applications.  It is used to stabilize and transport microliter quantities of blood, sputum, urine, and homogenized processed foods.

The Mini Leaf Crusher comes with an introductory five-pack of BioSpec DNA Sample Cards.  Additional Sample Cards can be ordered separately.

Cat. No. MLC320, Mini Leaf Crusher includes 5 BioSpec DNA Sample Cards

Cat. No. DSC20, BioSpec DNA Sample Cards, 20 pack

Cat. No. DSC50, BioSpec DNA Sample Cards, 50 pack

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Onyx Mortar & Pestle

Onyx Mortar & Pestle

A beautiful, hand-made mortar & pestle sculptured out of onyx stone.

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Porcelain Mortar & Pestle

Porcelain Mortar & Pestle

Low profile porcelain mortar and pestle.

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SpiralPestleā„¢ and MicroTube Homogenizer

SpiralPestleā„¢ and MicroTube Homogenizer

 

The NEW SpiralPestle™ and 1.5 ml Microtube grinder is a 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.

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Stainless Steel Tissue Grinder

Stainless Steel Tissue Grinder

All stainless steel Potter-Elvehjem style tubular mortar and pestle.  Superb temperature control during use, shatter-free, easy to clean.

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