I wrote a message to seller on amazon about the sulfur not being the purity that was advertised and they immediately refunded my money while allowing me to keep the 90 percent sulfur. Luckily after about 1 hour of calling local companies I was able to locate 98 percent sulfur 10 minutes from my home. I just completed the JS yesterday and am awaiting the settling of the sediments. It looks great and the 98 percent used looks just like the pictures in the book. I will bottle it up tonight and post some pictures. I have now completed my first batches of JWS, JHS, JS, many batches of JMS and built the large water softener and am very happy with the results. The JMS for soil preperation is the most amazing transformation ive ever seen, thank you so much for the information and quick responses to question on this forum