The NEW RX-007α (alpha) is suitable for measuring water soluble samples with very low concentrations (5.000% or less) such as tea (green tea, black tea, oolong tea) and low sugar beverages at a very high accuracy of ±0.005%. This product comes standard with a two (2) year limited warranty against manufacturer’s defects from the date of the original purchase. This warranty does not cover or apply to the prism. The warranty period can be extended to three (3) years if the product is registered with ATAGO. FDA 21 CFR Part 11 Software Included in Standard Delivery.