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 scale, graduated to read specific grmore...
Zeal Hydrometers are precision instruments manufactured from the highest quality glass tubing especially selected to to be free from stain and other defects. Precisely poised with steel shot sealed in a special wax ensures correct alignment. Scales have clearly marked figures andmore...