'comment and approval' is correct and usable in written English.
You could use it in a sentence like "His comment and approval was greatly appreciated."
At a minimum, that means that when the tools are acquired and revalidated, they should be subject to public notice, comment and approval.
Before a new audit standard may take effect, he continued, it must be subject to the board's rule-making processes and to publication for comment and approval by the commission.
These action plans are pending comment and approval by auditing entities.
When we think we are ready to test on our impaired volunteers, we put the devices on our physical therapists to get their comments and approval.
The final document, including all the parts, was circulated again for final comments and approval from all the members of the consensus.
TH: Design of data administration and analysis, data analyses, interpretation of results and reading, commenting and approval of the manuscript.
The entire content was subsequently circulated to all members of the Canadian Anxiety Guidelines Initiative Group for additional comments and approval during 2013.
After the consensus meeting, the resulting 20 potential indicators were sent to the entire panel for comments and approval.
The study protocol will be submitted to the relevant Ethics Committees, Institutional Review Boards and regulatory authorities for comments and approval.
