Why Laboratory Mills Aid Accurate Results

If you're working on analyzing a specimen, using either a chemical or physical method such as NIR

, ICP, AAs or XRF you know that it's essential that you have a specimen that you perfectly homogenized to the fineness necessary for analysis. In order to do this, you need a lab mill, grinder or crusher.

The only way you can guarantee that you have accurate results is if you can create the same samples each time. The technique for sample preparation must follow stringent preparation. A good lab mill, crusher or grinder can allow you to do this.

Some tests require that you have a mill that makes grinds your material to a rather coarse substance. Other tests on materials or materials themselves dictate the need for fine or ultrafine size. These varying needs mean you'll have to select the type of equipment best suited for your lab, tests and situation.

No matter what lab mill, grinder or crusher you select, you need to make certain that the tool and any accessories that it offers ensures there is no potential for contamination during the preparation for analysis. Contamination will destroy any reliability in your sampling.

There are several different types of mills from which to choose. One of them is perfect for the job in your lab. You can select from jaw-crushers, rotor mills, cutting mills, knife mills or blender, mortar grinders, disc mills, planetary ball mills or mixer mills. Each of these serves a special purpose and has a place in the lab.

You need to look at the hardness of the material that you mill. Before selecting one for your laboratory, assess how high a Mohs hardness the material you'll grind has. Softer materials don't require the strength necessary than those that crush or pulverize minerals or construction materials.

Sometimes you have to embrittle the materials before you crush it. In this case, you need to have a mill capable of handling the liquid oxygen. Be certain to check the specifications before you make a purchase of a mill.

Even the best of mills may produce too much heat under specific types of circumstance. That's why some of them offer the capability of cooling the mill chambers by running water through a double wall, if necessary. When you purchase a mill for dry grinding hard and brittle material, this may be a feature necessary for you. While you might not need it all the time, most mills that offer this feature, offer hose adapters.

Fibrous materials such as vegetation or paper require special treatment in the lab. You need a crusher that breaks down the material. The best ones offer products with interchangeable sieves with different sized holes that allow you to adjust the crusher for various projects.

When you purchase a lab mill, make certain that you know precisely how you'll use it and then look for the most versatile product with the most cost effective price. Your success often depends on the quality of the equipment you use so choose wisely.

by:Andrew Long

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