ATP is an unstable molecule in unbuffered water, in which it hydrolyses to ADP and phosphate. This is because the strength of the bonds between the phosphate groups in ATP is less than the strength of the hydrogen bonds (hydration bonds), between its products (ADP + phosphate), and water. Thus, if ATP and ADP are in chemical equilibrium in water, almost all of the ATP will eventually be converted to ADP.
attribuer. 1  to grant, to award. 2  to give credit to, to recognize. 3  to attribute to, to ascribe to. ( takes a reflexive pronoun, s'attribuer) to take the credit for, to give oneself priority over others.
ATTRI-AS is an instrument measuring the attrition resistance of any type of powder. It is based on the air jet principle and strictly follows ASTM standard method D5757. Nonetheless, it can also be used according to different procedures. Typical powders to be measured by this technique range between 10 and 180 micrometers in size.