Tris for molecular biology

DNases/RNases/Proteases: not detectable
Assay (titr.): min. 99.9 %
pH (1 M; H2O; 20°C): 10.5 - 11.5
Water: max. 0.2 %
Cu: max. 0.0001 %
Fe: max. 0.0001 %
Pb: max. 0.0001 %
A (1 cm/1 M in H2O)
430 nm: max. 0.004
260 nm: max. 0.03
280 nm: max. 0.02