You can enjoy super directivity A parametric speaker experiment kit Ultrasonic Directive Speaker This kit is designed to be able to make the parametric speaker which used a supersonic wave easily.Table Top Refrigerated Centrifuge, from microtubes to 500mL bottles, or micro-plates.Ideal for general purpose centrifuge.5 multiple swinging bucket rotors, 3 micro rotors, 2 angle rotors and 2 micro ...
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