There is a certain correlation between the color and quality of artemia cysts(brine shrimp eggs), but it needs to be comprehensively judged based on other characteristics. The following is a specific analysis:
The relationship between color and quality
High quality abundant cysts usually appear brown or brownish, with a uniform and glossy color, while inferior eggs may appear white, gray, or excessively dark colors (such as dark red or black), which may be caused by staining or aging of the cysts.
The way to distinguish
Observation morphology: High quality cysts particles are full and uniform, with a smooth surface and depressions; Poor quality cysts may have adhesions, impurities, or damage.
Heating test: Take a small amount of cysts and place them on a glass slide. Bake gently with a flame, and high-quality cysts will form small water droplets with the same number of droplets as the number of cysts; Poor quality cysts do not have this reaction.
Weight ratio: The ratio of wet weight to dry weight of high-quality cysts after hatching is ≥ 2.5, while the ratio of low-quality cysts is usually less than 1.5.