Having dropped to an average of about 300 Ph u per kg. But the [?] of our crude insulin has been [?] increased. The weight per unit is always below 2 mg, generally between 1 and 1.5 and recently we have attained crude insulin weighing only 0.8 mg. There seems to be some connection between the increase in purity and the decrease in yield.
We are planning a big factory to produce 500 000 ph u per week. With kindest regards
Yours very sincerely
August Krogh.