A lot actually. Heavy metals such as arsenic, cadmium, mercury, and lead. Equally as scary: bacteria contamination, yeast, or even mold. Even small amounts of these harmful contaminants add up in nutritional products taken on a routine basis. Ensuring that your supplement willingly mandates proven safe levels of these is of utmost importance.
Many distributors may tell you that their brand of MSM Organic Sulfur is made with pine trees, plants, or other similar organic products creating a more "natural" product. Stated blatantly, these statements are likely to be misrepresentations of fact, and could be a red flag of a product which is much more likely to have poor purity and increased risk to the user (you!).
Our product is chemically made in a sterile laboratory which has received a Food and Drug Administration (FDA) designation reserved for only the safest environments. The end product scientifically identical to the MSM Organic Sulfur found in nature. Furthermore, we strictly follow the FDA recommended "Good Manufacturing Practices (GMPs)," and also willingly participate in other current production standards that have been created by the AOAC International (an independent, National Institute of Health-sponsored, FDA-endorsed international community of chemists). Finally, we require each of our product batches to be independently tested by individuals who are not hired to produce the product. If it doesn't meet our production standards, it doesn't get shipped to you.
The results indicate that we offer a product with a purity not surpassed by any other MSM Organic Sulfur in the world. Simply put, this matters. Manufacturers who cut corners to save costs produce products with poor purity. So while 98% pure may not sound bad initially, it exposes the consumer to risk. Unnecessary risk when you have the opportunity to buy a strictly monitored, high purity product like our MSM Organic Sulfur.