National Brand 43-644 Laboratory Research Notebook, 4 x 4 Quad Ruled

The National Brand 43-644 Laboratory Research Notebook (UPC: 073333436440) is built to meet the rigorous record-keeping requirements of scientific, academic, and industrial laboratory research. Engineered for legal integrity and ease of use, this notebook features carbonless duplicate pages that allow researchers to create instant, identical copies of experimental data, diagrams, and observations without requiring separate carbon sheets. Each set consists of a primary white sheet and a yellow copy sheet. As you write on the top sheet, your notes instantly transfer onto the secondary page—making it easy to hand off research copies to lab supervisors, research partners, or patent documentation archives. Both sheets ruled with four squares per inch on the front of the page and plain on back. First sheet is bound. Duplicate is microperforated for easy removal. Notebook has a genuine Pressboard cover and stitched binding. Size 11 x 9-1/4".