Battery Operated Egg Candler

An egg candler (also called an egg candling torch) is a tool that uses a light focus beam and a bright light to observe the development of an embryo inside an egg during incubation. Most people with an egg incubator have an egg candler. An egg candler is optional, but having one provides the following advantages:

• Check how many of the eggs are fertile early in the incubation process. This means you’re alerted to any fertility issues early on rather than waiting until the hatch date. Knowing how many of the eggs are fertile also helps you plan for how many chicks you’ll need to take care of.
• Remove any infertile eggs from your egg incubator. This prevents them from rotting. Rotting eggs can smell and may even break open, creating a mess in your egg incubator that’s difficult to clean. Removing infertile eggs will also create more room on the hatching tray for the chicks to hatch.
• Watch the embryos develop throughout the incubation process. It’s always an exciting process to observe!

Any eggs that don’t hatch can be candled to help diagnose when the embryos stopped developing. This can help diagnose potential issues and improve future hatch rates. 

Before setting eggs in your egg incubator, they can be candled to check for hairline cracks. Eggs with hairline cracks shouldn’t be incubated. Hairline cracks are difficult to spot with the naked eye but become clearly visible as white lines when using an egg candler.