The purpose of buoys

Measure the density, specific gravity, and other concentrations of liquids.

Floating characteristics

Density, specific gravity, and other concentrations can be directly read.

Easy to construct and operate.

Can be used with most liquids.

Accurate measurement is also possible.

Floating structure

The material is glass.It consists of a buoyant body and a keel with scale paper inside.Use shot put or mercury as internal weight.When the float floats in a liquid and is in equilibrium, the mass of the liquid is equal to the volume of the submerged part of the float, equal to the mass of the float.Due to the constant mass of the float, its depth of sinking varies depending on the density of the liquid.If used at a constant temperature, the volume below one scale remains constant.From there, you can mark density and other scales on the top of the float.

Types of floats

Density floatJIS K 2249 and JIS B 7525 are the basic knowledge of floats, and all other scale floats start from density floats.The unit is "g/cm3")

Specific gravity floatJIS B 7525 and JIS Z 8804 are almost identical to density floats.Using 15/4 ℃ as the standard, water at temperatures outside of 4 ℃ should be marked with "20/20 ℃", "15/15 ℃", etc.It provides accurate readings based on the temperature of the molecule.The denominator represents the standard water temperature.

-Heavy wave intensity scaleThe scale spacing is equal.A float used for liquids heavier than water.

Lightwave Beauty ScaleThe scale is equidistant.A float used for liquids lighter than water.

Sake precision floatJIS B 7548 is a float made from a mixture of ethanol and water, with ethanol at a volume percentage of 15 ° C

Sake alcohol contentUsed to determine whether Japanese sake (sake) is dry or sweet, with the+(add) side indicating dry and the - (subtract) side indicating sweet.

Sugar content floatUsing the mass percentage of pure sucrose in a sucrose solution as a float for sucrose content.

API float degreeThis is the scale of the American Petroleum Institute (API).Mainly used for petroleum.

Twaddell rulerUsed for measuring dyes, etc.

Milk viscosity meterAlso known as a milk consistency meter, it is used to measure dairy products.