1. Put the simple densimeter into the water, float it vertically in the water, and measure the depth h of the water immersed in the water with a scale.

2. Take out the simple densimeter, put the eggs in water, add salt, and keep stirring with the simple densimeter until the eggs are suspended in salt water.

3. Take out the eggs, then float the simple densimeter vertically in the salt water, and also measure the immersion depth h of the salt water.

Let the cross-sectional area of a simple densimeter be s and the density of water be ρ water.

When the densimeter floats on the water surface, it is subjected to buoyancy: F floating water = ρ water gV drainage = ρ water gSh water,

The density of brine is ρ brine, and the density meter is buoyed when floating on the surface of brine: F floating salt = ρ brine gV discharging salt = ρ brine gSh brine,

In both cases, the densitometer floats on the liquid surface, and the buoyancy is equal to its gravity: f floating salt =F floating water =G,

∴ ρ brine gSh brine = ρ water gSh water,

∴ ρ brine H brine = ρ water H water,

∴ The density of eggs is: ρ eggs = ρ brine = ρ water H water H brine.

Answer: Experimental procedure: 1. Put the simple densitometer into the water, the simple densitometer floats vertically in the water, and measure the length of H water immersed in the water with a scale.

2. Take out the simple densimeter, put the eggs in water, add salt, and keep stirring with the simple densimeter until the eggs are suspended in salt water.

3. Take out the eggs, then float the simple densimeter vertically in the salt water, and also measure the immersion depth h of the salt water.

The density expression of eggs: ρ eggs = ρ water h water h salt water.