Make a solid start
To select the best blender follow a systematic approach that considers where the blender fits in the process and the difficulty of the material. The amount of testing required can be a confusing issue. You can base some selections on similar materials being handled but other materials will require extensive and more expensive procedures. However, often there’s no single correct answer. Temper any expert opinions with an evaluation of overall process needs and potential problems. Ill-founded certainty is far worse than a realistic appreciation of the confusing issues.
Tom Blackwood is director of technology for Healthsite Associates, St. Louis, Mo. E-mail him at firstname.lastname@example.org.