Originally Posted by Ian Grant
It wasn't D76 that doesn't give the true ASA/ISO. It was a formula very close to Adox Borax MQ. I have the formula somewhere along with the one used for the DIN standard.
The ASA formula and Adox Boraax MQ work very well with modern emulsions, about 1/3 stop more speed than D76, excellent fine grain, better sharpness and because it's cleaner working excellent tonality.
I have the formula at home somewhere but if memory serves the ASA developer was an MQ Carbonate formula.