Brightwell Refractometer Calibration 250ml

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1.0264 Specific Gravity1.3394 Refractive Index35 ppt Salinity53 uS/cm at 25 deg c Overview Brightwell Aquatics Aquarium Reagents Refractometer Calibration Standard is designed to p rovide an accurate reference for the calibration of seawater refractometers, hydrometers and other density measuring equipment. Show more