FRD-10 Egg Candler


The FRD-10 Egg Candler comes with both small and large focus beams and can be used to test the fertility of most types of eggs including chicken, Japanese quail, duck, turkey, goose, pheasant, and guinea fowl eggs.

The FRD-10 egg candler is powered by a USB cable or portable battery case (both included).  The USB cable can be used with a USB wall charger, phone charger, or USB compatible electronic device.  The portable battery case allows easy access to candle eggs under a broody hen. The battery case requires three AA batteries (not included).  

Instructions for the FRD-10 egg candler, a guide on how to candle fertile eggs written by Poultry Australia and a storage case are also included.   Express postage is available upon request at


(Free Australia Wide Postage)  

Candling Fertile Eggs

The best time to candle eggs is at 14 days into the incubation process.  Trying to candle eggs without a proper egg candler is inaccurate and will not show the development of the embryo.  


For the most accurate results, eggs should be candled in a dark environment.  Candling can be used to check the fertility of eggs set under a hen or in an incubator.  Try to limit the time that the eggs spend unincubated to under five minutes.  Never candle eggs after the 17th day into the incubation process.


 To candle an egg, hold it up against the egg candler with the round side of the egg facing the light beam (pointy side upwards) produced by the candler.  It is a good idea to first candle an egg that has not been incubated to see how light travels straight through.  When candling a fertile egg the light will be blocked by the developing embryo inside.  The development of membranes within the egg should also be clear.  


It is often possible to see movement within the egg at 14 days.  


This image is of an egg that is not fertile using a FRD-10 egg candler. The focus beam produced by the

LED light beads travels straight through the unfertilised egg.    


This image is of a fertile egg taken at 14 days into the incubation process.  The light does not travel all the way through the egg as it is blocked by the developing embryo inside.  A membrane structure can also be seen clearly at the base of the egg.


Also see Poultry Australia's guide to Candling Fertile Eggs

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