This seems like a bit of a problem:
More than 70% of researchers have tried and failed to reproduce another scientist’s experiments, and more than half have failed to reproduce their own experiments. Those are some of the telling figures that emerged from Nature’s survey of 1,576 researchers who took a brief online questionnaire on reproducibility in research.
Source: 1,500 scientists lift the lid on reproducibility | Nature
This is from May 2016, but still of interest.
Some of the reproducibility problem may be because the paper and addendums did not adequately describe the original experiment, or it may come down to very subtle differences in equipment used in the labs.
