Gents
        I have been asked by my company to investigate a method of 
     monitoring the level of bicarbonate in (sodium carbonate) developer 
     solutions. I have a couple of questions I hope someone can answer:
     
     * How is the bicarbonate formed in the first place and what variables 
     affect its' concentration?
     * What effects does this bicarbonate have on developmeny (if any).
     * Is there any way of subsequently removing the bicarbonate?
     * Finally, is anyone already measuring bicarbonate level and what 
     system works best for you?
     
     Thanks for your time.
     
     David Albin