Summary. Introduction. Organize the Report for Fast Writing, Easy Reading. Where Reports Go Wrong. The Inverted Pyramid. Specific Proposal and Its Benefits. Effective Report Writing. Six guidelines for fast and functional writing. Understand the needs of audience. What our audience expects. Collect and organize your information. Mobilize our subconscious. Build up and exploit our momentum. Watch out for time-wasting verbosity. How to keep laboratory note books. Industrial laboratory reports. Academic laboratory reports. Conclusions.