I spoke by phone with PG and in my case I used a small syringe to draw out the first half ml. and dissolved it in a shot glass and added it to the us gallon of reverse osmosis water as I previously described. That made the approximately 150 ppm batch. Next I drew out the remaining fluid in the vial they had sent. I ended up with over a half ml in the syringe. I discharged about a third of the fluid and used the remainder for my around 100 ppm batch. I have often wished I had made a stronger batch instead of wasting it. And as it has turned out so far the 150 is superior. However a word to the wise. When we tinker with these hormones, force yourself to resist a full throttle mentality. A little goes a long way, and less is always better until proven otherwise. It gets hard to resist. real hard. Another short circuit comes into play with the number of applications being administered. I stop at one. Again, really hard to resist blasting to the moon, but we slow our roll.
I am really excited for your run. Are you doing a journal? PLS.
I mixed up some yesterday with Polysorbate 20 and thought I'd measure ppm with half the water added first, before adding the rest.
I have 2 x ppm pens and I used high purity water which gave me pre readings of 0ppm and 5ppm.
With 5 times the PS20 as meja mixed together, I added half the wafer and left it mixing for 5 mins with a magnetic stirrer.
The readings were 0ppm and 0ppm.
I added the rest of the water to take it to their ratios for 147ppm and it still measured 0ppm and 0ppm.
It got a good mix and I could see the PS20 foam up a little bit but it doesn't come through on the ppm pens.
Don't do this at home ( day one of chemistry class !), I gave the raw meja a little sniff and I couldn't smell anything but later got a little irritation in my nose, so I know that I wasn't sold $99 dollars of nothing.
I did check the material safety data sheet from Sigma Aldrich.
So, with my cheap meters, there doesn't seem to be a way of measuring the ppm.
The ratios I went with were
0.5ml meja
2.5ml PS20
3.8 litres deionized water (1 US gallon)
The early mix was to give a friend some but he may already be too far into flower.
Did you spray on the leaves topside and underside?
and did you spray the buds too?