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The CEL-632C Sound Level Meter has Octave and 1/3 octave band analysis and audio and event capture. Again with a simple user interface, and rugged design, The CEL-632C Sound Level Meter is designed to make occupational noise measurements quickly and is also ISO9612 and OSHA...

MSP’s NanoSilica™ Size Standards are concentrated suspensions of amorphous SiO2 particles with highly uniform size distributions, suspended in ultra-pure water (UPW).