Our Porcine Chondroitin Sulfate is derived from 100% pure Porcine Cartilage with a content of 85% and 90%. Chondroitin sulfate is used for osteoarthritis. It is often used in combination with other products, including manganese ascorbate, glucosamine sulfate, glucosamine hydrochloride, or N-acetyl glucosamine. Chondroitin Sulfate is believed to aid in improving symptoms, stopping, or even reversing the degenerative process of arthritis, osteoarthritis and rheumatoid arthritis. Chondroitin Sulfate is often paired with Glucosamine, which is another natural alternative treatment for arthritis. Chondroitin Sulfate has proven to be effective for not only arthritis but also psoriasis, scleroderma, herpes, hemorrhoids, rectal tears, poison oak, poison ivy, acne and " dry socket" after tooth extractions. Test Items Specifications Appearance White to off-white Powder Odor Characteristic Clarity Colorless and transparent Assay Min. 90%(dry product, HPLC area method) Specific Rotation -22°- -30° Protein Max. 6.0% PH (1% solution) 5.5-7.5 Loss on Drying Max.10% Residue on Ignition 22.0%-30.0% Chloride Max.0.50% Sulfate Max.0.24% Heavy metals Max.20ppm Total plate count Max. 10000cfu/g Applications: Antioxidant Improve hearing and skin arefaction Patellofemoral joint protection. Eye protection.