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I just want to thank you and the staff at Artisan for your prompt dispatch of the 34401A main board. I got it a couple of hrs. ago, removed the old board, installed the new and the result is as shown in the attachment. It not only works, but is calibrated to the last digit! I am very pleased and will definitely recommend your firm to my friends and colleagues. I really appreciate doing business with a firm that values service.
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The Mixer Mill MM 400 is a compact, versatile bench-top unit developed specially for dry, wet and cryogenic grinding of small sample amounts. This laboratory mill mixes and homogenizes up to 2 x 20 ml powders and suspensions within a few seconds. It is also perfectly suitable for the disruption of biological cells as well as for DNA/RNA and protein extraction. With its powerful performance and great flexibility, the Mixer Mill MM 400 is a unique product in the market. You may also be interested in the mixer mill models MM 500 nano or MM 500 vario which operate with the same functional principle but with a higher frequency of 35Hz. Each model has a specific application focus.
Laboratory Mixer Mills like the MM 400 are widely used for homogenizing biological samples such as tissue, liver, muscle or plant materials like cannabis. For cell disruption via bead beating mixer mills are also the perfect solution. The MM 400 accepts adapters for different single-use vials with the following capacities per batch:
The MM 400 can be used for efficient cell disruption of max. 240 ml cell suspension for DNA/RNA and protein extraction. It is also possible to isolate intact bacteria from tissue in 8 x 30 ml bottles or 10 x 5 ml vials for accurate diagnosis of infections. Accessories for the pulverization of 25 - 30 g plant material, like cannabis flower buds, include conical centrifugation tubes.
The nominal volume of the screw-top grinding jars ranges from 1.5 ml to 50 ml; available materials include hardened steel, stainless steel, agate, tungsten carbide, zirconium oxide and PTFE, ensuring contamination-free sample preparation.
Adapters for 0.5 / 1.5 / 2 / 5 ml single-use vials can be used in the MM 400. For larger sample amounts, e. g. for protein extraction, adapters for 50 ml conical centrifugation tubes or 30 ml wide-mouth bottles are available.
The CryoKit is a cost-efficient solution for occasional cryogenic grinding with the Mixer Mill MM 400. This set of insulated containers, tongs and safety glasses is used for pre-cooling the grinding jar in liquid nitrogen.
RETSCH mixer mills are true allrounders. They homogenize, for example, alloys, animal feed, bones, ceramics, cereals, chemical products, coal, coke, drugs, electronic scrap, glass, grains, hair, minerals, oil seeds, ores, paper, plant materials, plastics, sewage sludge, soils, straw, tablets, textiles, tissue, tobacco, waste samples, wood, wool, etc.
The grinding jars of the mixer mill MM400 perform radial oscillations in a horizontal position. The inertia of the grinding balls causes them to impact with high energy on the sample material at the rounded ends of the jars and pulverize it. Also, the movement of the jars combined with the movement of the balls result in the intensive mixing of the sample. The degree of mixing can be increased even further by using several smaller balls. If several small balls are used (e.g. glass beads) then, for example, biological cells can be disrupted. The large frictional impact effects between the beads ensure effective cell disruption.
RETSCH is the leading solution provider for neutral-to-analysis sample preparation and characterization of solids. Based on a century of experience RETSCH develops size reduction and sieving equipment which is characterized by excellent performance, operating convenience, safety and a long lifetime.
Ball mills are among the most variable and effective tools when it comes to size reduction of hard, brittle or fibrous materials. The variety of grinding modes, usable volumes and available grinding tool materials make ball mills the perfect match for a vast range of applications.
RETSCH is the world leading manufacturer of laboratory ball mills and offers the perfect product for each application. The High Energy Ball Mill Emax and MM 500 were developed for grinding with the highest energy input. The innovative design of both, the mills and the grinding jars, allows for continuous grinding down to the nano range in the shortest amount of time - with only minor warming effects. These ball mills are also suitable for mechano chemistry. Mixer Mills grind and homogenize small sample volumes quickly and efficiently by impact and friction. These ball mills are suitable for dry, wet and cryogenic grinding as well as for cell disruption for DNA/RNA recovery. Planetary Ball Mills meet and exceed all requirements for fast and reproducible grinding to analytical fineness. They are used for the most demanding tasks in the laboratory, from routine sample processing to colloidal grinding and advanced materials development. The drum mill is a type of ball mill suitable for the fine grinding of large feed sizes and large sample volumes.