There will be no abrupt changes in the cross section of the hydrometer, that will hinder cleaning or drying or permit air bubble to be trapped. The graduation of hydrometer will be on the basis of liquid having a surface tension of 55 dynes/cm. The...
Soil Hydrometer Seamless, symmetrical stem and bulb do not vary in diameter. One-piece ballast is secured to lower part of the body. Guaranteed calibration accuracy eliminates errors due to variable dilution. H-4242 uses ASTM 151 H...
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