Magnetic racks for working with magnetic particles
A magnetic rack is an indispensable instrument in works that involve magnetic particles. Using magnetic rack allows to process big number of samples in a short time and with high efficiency. Choosing the specific make of the rack depends on assigned tasks.
The core element of all our racks is a rare-earth neodymium magnet. These magnets have the strongest magnetic field of all the magnets that are known and available at this moment. It provides high particles collection speed, making the whole typical collection procedure last not longer than 30 seconds. The design of the rack and its capacity are the main factors defining its efficiency.
MagRack16
magnetic rack is designed to allow simultaneous processing of 16 samples. MagRack16 has a removable top part (the tubes holder) and magnetic base (the collector). Such design allows to resuspend and collect particles without removing tubes from the rack and putting them back. It is just needed to lift the top part and put it away from the magnetic collector. The particles can be resuspended after it. When the top part is placed back, the particles will start to collect immediately.
A special plastic band with small separate neodymium magnets is used instead of a whole magnet bar. It minimizes the weight of the rack and decreases the range of strong magnetic field that can affect surrounding equipment. Small magnets have much higher field attenuation with distance, while near the surface the field is almost as strong as it is near the whole magnetic band. The magnetic band can be moved in vertical direction to change the particles collection zone position
MagRack40 magnetic rack is designed for workload of 40 samples. The rack is an intermediate unit between manual processing procedures and semi-automated equipment.
The magnetic rack consists of three parts: the transparent top part (the rack itsefl), the bottom part and the mobile magnetic collector. The transparent rack can contain up to 40 tubes (5 strips with 8 tubes each). The magnetic collector is placed on special sliders in the bottom part. It can move between rows of tubes. The collector has a self-positioning system that makes it easy to place it right along with the tubes. No precise work is needed to align the collector with the tubes row. It has to be just pushed towards the required row and it will align itself with the tubes.
Such design makes it possible to carry out the whole procedure in the rack, i.e. no need to remove the tubes out of the magnetic rack to resuspend particles and then place them back to collect particles. You just have to move the magnetic collector to the row of tubes to collect particles. When you wish to resuspend them, move the collector away and use pipetter or mini-mixer.
MagRack40 was developed not only as a desktop device. It is a part of our semi-automated isolation complex for DNA, RNA and proteins, that is in development stage now. Using the rack as a standalone desktop device also provides high efficiency when combined with other devices: compatible thermal blocks, handheld mixers, aspirators etc.
