Thanks Nathan. yes, I think you're right, I think The "X" was an antifoggant? I have some Benzotriazole stuff I could dose the microdol with. I just opened one of the packages and it had some recipes inside for developing etc. It said if you would like to harden the plates use a fixer with hardener. So I won't worry. The first developer is a Pyro developer the second is a Metol etc type. It gives a 4 minute development time btw ?! This is Panchromatic so I can't develop it and observe. I'm going to try 10 minutes in the microdol. I exposed the test plate at asa 12. I'll order some HC-110 for the future.