What do we mean by accuracy and reproducibility?
Concerned instruments: puriFlash 215, puriFlash 430, puriFlash 450, puriFlash 4100, puriFlash 4250
Concerned module: general
In the fields of science, engineering, industry, and statistics, the accuracy (précision en français) of a measurement system is the degree of closeness of measurements of a quantity to that quantity's actual (true) value. 
The precision (repeatability) of a measurement system, related to reproducibility and repeatability, is the degree to which repeated measurements under unchanged conditions show the same results.