معيار معايرة مقياس الانكسار ومقياس كثافة السوائل من Brightwell Aquatics، وهو مرجع دقيق لمعايرة أجهزة قياس انكسار مياه البحر وأجهزة قياس السوائل وغيرها من معدات قياس الكثافة (RES250)
مميزات خاصة
Accurate reference for the calibration of seawater refractometers, hydrometers & other density measuring equipment
35 ppt Salinity
1. 0264 Specific Gravity
1. 3394 Refractive Index
53 uS/cm at 25 deg c
Included Components: Refractometer And Hydrometer Calibration Standard
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