Archival quality A4 casebound laboratory notebook ideal for documentation of research, IP protection, dissertations, and patent purposes. Tamper-evident and in compliance with GLP, GMP and GCP. Section-sewn, rounded binding so lay completely flat when open. Features include responsibly sourced, acid-free, ISO 9706 and FSC certified paper and highly durable, waterproof, library buckram cover material that wipes clean. Includes a page marker ribbon. Ideal for in the lab or in the field. The best lab notebooks on the market. Lifetime guarantee.