Yinsheng Warmtone Hydrometer Cup

Description

Directions For Use,

Place the Hydrometer into the marine tank to obtain a reading.
Use the plastic pointer provided, to probe / remove any air bubbles traps on the meter gauge
The left side of the scale ranging from 0 to 43.9, is indicative of the salinity(PPT) of the water.
The middle column of the scale ranging from 1.000 to 1.030 is indicative of the gravity under 25 degrees.
lastly, the right side of the scale is indicative of the Conductivity (mS/cm)

Reading the Yinsheng Warmtone hydrometer cup accurately

A swing-arm hydrometer cup like this Yinsheng is the budget-friendly way to check salinity in a marine or brackish tank, and it is where most Singapore reefers start before upgrading later. The trick to a reliable reading is removing trapped air bubbles from the arm with the supplied plastic pointer; even one bubble clinging to the gauge will throw your specific gravity off and lead you to over or under-dose salt. Tap and probe gently until the arm settles cleanly.

Bear in mind that swing-arm hydrometers are calibrated to a reference temperature, while our tanks often run warmer at 27-29C, so factor that in or you may misread the true salinity. Rinse the cup in fresh water and let it dry between uses to stop salt creep gumming up the arm, which is the usual reason these drift over time.

Find it and other tools in our marine general range, and to understand the accuracy trade-offs read our hydrometer vs refractometer salinity comparison and our best salt mix for marine aquariums guide.