Sending Pocket Geiger Radiation Sensor to Space

We have an 11-year-old who is sending a small payload into space next year, inside of our CubeSat. He wants to use this radiation sensor as part of his experiment: https://www.sparkfun.com/products/14209

Does anyone know what type of solder is used on the PCB? We are not allowed to use lead-free solder.

The description says “This product is for educational purposes and should not be directly relied upon for determinations regarding one’s health or safety.” Also, I do not think this sensor is space graded. Because if it was, the datasheet would have mentioned it.

I am not familiar with the sensor at all; but I do recall a similar exchange about that sensor not long ago. You should review that communications here: viewtopic.php?f=74&t=59022&hilit=geiger