Look at the old Adox EFKE Data sheet Kb/R 14 is now called Adox CHS 25, the 17 -50 and the 21 -100. The old names were the DIN speed in Tungsten light, the new ones the ASA/BS part of the ISO.

adox-Efke.jpg

I think Microphen would be the closest to KR E24, you might use the EFKE recommended starting times, and those speeds you want are there in the datasheet. Many Eastern block PQ developers were similar to Ilfords published formulae.

Ian