thanks everybody for your responses. my intent was to get a little finer grain than beutler's. the 1g metol stipulation was just a bench mark. after reading your responses and thinking about it a bit i see that if i want to keep it at 1g/L i'll need the borax or experiment with dilutions of D23. are there any other alternatives to borax (within that ph range) that are unbuffered? thanks again.