Hi All,
Calculating PPM, an example:
Say you want a 750 PPM concentration of GA3. You want 100mL (0.1L) solution to soak your seeds in.
1L water = 1000g = 1,000,000mg
0.75g GA3 = 750mg GA3
750mg/1,000,000mg = 750PPM
So for a concentration of 750PPM you would add 0.750g of GA3 to 1L of water.
Well, this is a lot of GA3 solution, cacti seeds are small. So now you only want 0.1L (100mL) of solution.
So you multiply the number of grams of GA3 by 0.1.
Therefore, for 100mL of solution, you would add 0.075g (75mg) of GA3 to 100mL water.
HCC