Rock, Paper, Scissors: Ways that Milling and Sample Prep Affect Our Everyday Lives
Find out what the children’s game “Rock, Paper, Scissors” has to do with the science of milling and sample preparation.
OUTROS GRUPOS DE PRODUTO
Mortar Grinder
PULVERISETTE 2
Caracteristicas técnicas
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OVERVIEW
Versatile Use
Thanks to its special mode of operation, the FRITSCH Mortar Grinder PULVERISETTE 2 is the ideal universal grinder in the laboratory – for analysis, quality control and materials testing as well as for the mixing and homogenisation of pastes and creams on a laboratory scale. Its particularly gentle grinding by friction with almost no thermal load is ideal for the preparation of tablets in galenics. Using liquid nitrogen it also grinds difficult-to-mill samples with moist, fibrous or elastic structures. And the PULVERISETTE 2 is also ideally suited for mixing of solids or liquids and solids. With brief, reliably reproducible grinding and mixing times, it is loss and dust free. For final finenesses of between 10 and 20 μm, with a feed size of 6 – 8 mm and a max. sample quantity of up to 190 ml.
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WORKING PRINCIPLE
Gentle fine grinding
The principle of the Mortar Grinder is the oldest grinding principle in the world: using pressure and friction, the pestle, with its large grinding sur face, grinds the material against the walls and bottom of the mortar bowl. Your advantage: a particularly uniform and gentle grinding through friction, mixing or homogenisation of organic and inorganic samples with no thermal load – dry or in suspension at 70 to 80 rpm.
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Features
- For hard, medium-hard, soft, brittle, fibrous and abrasive materials
- Particularly gentle grinding with no thermal load
- Precisely adjustable pestle pressure and optimum scraper kinematics
- Loss-free grinding thanks to closed grinding chamber
- Illuminated grinding chamber for optimum control
- Simple filling even during grinding
- Easy cleaning through simple removal of pestle and mortar bowl
- Cryogenic grinding
- Automatic timer for reproducible grinding times
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FOR SPECIAL APPLICATIONS: CRYOGENIC GRINDING
FRITSCH Advantage
The PULVERISETTE 2 is ideally suited for cryogenic grinding, where the material to be ground is embrittled with the addition of liquid nitrogen. In this manner moist, fibrous or elastic samples such as tomatoes, rubber, synthetic resins or plants can be ground without problem in the stainless steel grinding set.
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EQUIPMENT / ACCESSORIES
Configure your Mortar Grinder PULVERISETTE 2 exactly to your specific application
Only available from FRITSCH: the mortar bowls of the PULVERISETTE 2 are rimmed regardless of the material, in a robust shell of shock-resistant plastic, which protects the actual bowl. This makes it particularly durable and the integrated all around grip ensures optimum working conditions. All FRITSCH mortar bowls have an extra high rim and are sealed by a sealing lip in the lid.
For contamination-free sample grinding, select the grinding set of your PULVERISETTE 2 from seven different materials – the appropriate pestle and scraper are also supplied. A grinding set made of stainless steel without a plastic frame is available, especially for cryogenic grinding using liquid nitrogen to embrittle the material to be ground. It is also heat-resistant and can be cleaned with solvents.
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Applications / Solutions
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From “Boulder” to Nano-Particles
Medium-hard to hard materials with edge lengths up to 95 mm can be pre-crushed with the FRITSCH Jaw Crusher PULVERISETTE 1 so an additional fine comminution with many FRITSCH mills is possible.
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Production of mixtures on a laboratory scale - often a challenge
Mixed were solid with solid substances, solid with liquid substances and liquids with solids. As solid phases mostly fine powders are used, which during the mixing process should not be further reduced in size. The liquid phases include mercury to saline solutions up to resins.
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Sample preparation of mineral animal feed
Many various different kinds of animal feed exist which differ in regards to each animal in composition, appearance and analysis. Nevertheless exact guidelines for its contents in regards to minerals, possible additives and unwanted ingredients exist. Essential for each animal feed is though, that the composition has to be inspected.
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Pigment processing: The isolation of the naturally beautiful
Mankind has always enjoyed enduring works of art. The particles of the pigments have always been playing a major role. For example, the oldest cave paintings still impress us today. One of the most renowned experts for the production of historical pigments is Dr. Kremer from Aichstetten (Bavaria, Germany). FRITSCH laboratory mills are of great importance in Dr. Kremer's pigment processing.
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Hydrolytic Class of Glass
Packaging in all variations is an indispensable part of today’s society. So it is implicit that almost every sold product is packaged. The materials from which the packaging is made are often viewed non-critical. But it is to be assumed that substances from packaging transfer into the wrapped product. Therefore an analysis of for example glass packaging is essential.
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Pesticide and antibiotics residues in food - tomatoes used as an example
Pesticides in the broader sense are considered all crop protection products and all other pesticides. These substances are applied directly onto the plant and also pass through soil along with nutrients, into the plants and therefore inside the fruits.
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Processing cocoa beans in the laboratory
The most important products which we as consumers come in contact with are cocoa beverages and chocolate. The most important characteristic trait for us is the taste. But before they become chocolate, the cocoa beans have to be roasted, peeled and cracked open.
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Comminution of Pills
The determination of substances contained in tablets after the production process is mandated according to the analytical rules of the German and European Pharmacopoeia. These rules include an analysis in regards to quality, effectiveness and safety of all contained active components and auxiliary materials.
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Analysis of active components of various forms of medication
In the pharmaceutical technology (formerly galenics) one is occupied with the production of various pharmaceutical forms like for example tablets, pastilles or dragées.
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