Trinity Fluids has formulated four arterial fluids that will tackle any situation the embalmer may face. The AF series has all three key ingredients that the professional embalmer requires to promote quality in their work. AF 30 contains the same quality materials as the standard AF28 but with increased formaldehyde percentage by volume. AF30 will firm up very nicely and still give a soft natural appearance.Why not use one product instead of 3 or 4 products to get the job done? Trinity Fluids AF series can do it all.