What are the benefits of Reagecon’s turbidity standards over Formazin turbidity standards?
A detailed comparison of these turbidity standards is given in the Reagecon Technical Paper “Turbidity Standards and Reference Materials” (Include hyperlink to paper), but the benefits can be summarised as: • Non-toxic (Formazin is derived from a carcinogen). • Shelf-life of 2 years at all values; Formazin has a shelf-life of 3 months at 4,000NTU and must be freshly prepared at low values. • Reagecon’s turbidity standards are certified traceable to NIST Reference Materials; Formazin standards are not traceable and so do not facilitate comparability of test results. • Reagecon’s turbidity standards have a specification of ±1%. Formazin standards are very difficult to make accurately and have typical accuracies from 10 – 30% • Homogenity. Formazin coagulates and the particles settle out. If you shake Formazin before use, the particles collide and fragment, changing the turbidity value of the solution. Reagecon’s turbidity standards use microscopic polymer beads suspended in an emulsion a
