Laboratory Research Notebook

National Brand 43-649 Laboratory Research Notebooks are designed for laboratory note-taking and record keeping. Notebook features 100 numbered, duplicate sets with both sheets ruled with four squares per inch on the front of the page and plain on back. First sheet is bound and duplicate is microperforated for easy removal. Notebook has a genuine Pressboard cover, stitched binding and three-hole punched edge to secure notebook in standard three-ring binders.