R1253 is referred as a RNase A under Thermo Fisher Scientific catalogue. R1253 Wash Solution is one of the element of GeneJET Plasmid Miniprep Kit (cat no. K0502/K0503). It is an enzyme and can be ordered separately. It is applied in DNA extraction.
Specifications: R1253 RNaseA is added to resuspension solution . Each pack contains 0.7 ml of enzyme.