All products ship from our 30,000 sq. ft. Haverhill, MA warehouse
Spex 8000D CertiPrep mixer mill
Clamp movement: 2.25” back and forth, 1” side to side
Clamp speed: 1060 back and forth cycles
90 day warranty
The Spex 8000D CertiPrep mill is a two-clamp lab mill that can be used for pulverizing rocks, minerals, sand, cement, slag, ceramics, catalyst supports, and hundreds of other brittle, often hard samples in the 10-gram range. This model is a variant on the ball mill or jar mill, which grinds samples by placing them in a container along with one or more grinding elements, and imparting motion to the container. Generally the containers and grinding elements are made from the same material. As the container is swung, the inertia of the grinding elements causes them to move independently, into each other and against the container wall, grinding the sample. The Spex 8000D is best described as a high-energy ball mill and is capable of rapidly shaking containers back and forth several thousand times a minute and features a variable-range electronic timer, forced-air cooling, and a safety interlock. To operate, a vial containing the sample and a ball or balls is secured in the clamp and swung energetically back and forth. The back-and-forth shaking motion is combined with lateral movements of the ends of the vial, so that the vial appears to be describing a figure-8 or infinity sign as it moves. The length of that swing is the same as the internal length of the vial, about two inches. With each swing of the vial the ball impacts against the sample and the end of the vial, both milling and mixing the sample. Because of the amplitude and velocity of the clamp’s swing, each ball develops fairly high G-forces, enough to pulverize the toughest rocks, slag and ceramics. Vials are sold separately (available from Spex or your local distributor) and are of a variety of different materials, including steel, tungsten carbide, agate, zirconia, silicon nitride, alumina, and heavy-duty plastic.
Most of our equipment
is used and reconditioned. Our technicians test ovens using a calibrated digital chart recorder to verify the accuracy of temperature controls and readouts and run the unit under vacuum to insure chamber integrity. We typically leave an oven under vacuum for 24 hours to make sure the pressure holds. We replace any hardware or parts as is necessary and clean all incubators thoroughly prior to shipment.
Click Hereto see the Spex 8000D on the American Instrument Exchange YouTube channel.
The photos above are representative. Please bear in mind that the equipment shown is currently in storage in our warehouse and that in addition to testing each machine we will clean all the equipment thoroughly prior to shipment. We often have multiple units of each model in stock and sometimes we're unable to feature photos of every single unit. At your request, we can provide photos of the equipment in your order after it has been tested and cleaned.
FAQ
Does the equipment come with a warranty?
Yes, all equipment from American Instrument Exchange comes with a warranty. Used/reconditioned/refurbished equipment is tested to make sure it operates to the manufacturer's specifications and comes with a 90-day warranty (unless otherwise noted). New equipment comes with a warranty from the manufacturer.
How do you test and recondition the equipment?
Testing requirements vary across all the equipment categories we sell. Temperature controlled units are tested with NIST traceable probes and data loggers. Gaskets, external housing, glass, handles, controls and control screens are all thoroughly inspected for integrity and functionality. We test all equipment using the manufacturer's parameters and specifications to confirm that the unit operates properly.
How do products ship from American Instrument Exchange?
We can ship products both nationally and internationally using a well-established network of transporters. Smaller items will ship via UPS. Larger equipment will be palletized and shipped either LTL or air-ride, depending on the specific equipment and/or delivery requirements.
Return and order cancellation policy
American Instrument Exchange will accept the return of any product that is not working as represented and could not be replaced or repaired to the customer's satisfaction during the warranty period. Customers who cancel orders after refurbishing has begun will be subject to a cancellation and restocking fee of between 20% and 40%.
Are discounts available for educational or non-profit institutions, or for bulk purchases?
Yes – call or email us today with a list of equipment you're looking for and we can potentially put together a quote that includes a discount.
How does your price matching policy work?
We strive to keep our pricing competitive and reasonable. If you find comparable items for sale at a lower price from other vendors please send us a link and or quote for the item and we'll do our best to match or beat the price.
Can I see the equipment in person before committing to a purchase?
Customers are welcome to make an appointment to view equipment in our warehouse. Given our workload we may not be able to test or clean the equipment prior to your arrival if you have not committed to an order.
1023 Western Avenue is a working warehouse, not a showroom, and customers should dress appropriately and wear closed toe shoes.
Can I ship products that I purchased elsewhere to American Instrument for repair?
Yes – please see our repair services page for more information.
