Because even the smallest mistakes can mess up your work in a lab. You want to get everything exactly right when measuring in a lab. So using Tools will help you get better results.
<span>for accurate results, for example when they are making vaccines, these are weakened harmful or disease causing viruses,, too little of the virus then it would not be a vaccine or simply would not build you antibodies, and too much of it would not also not a vaccine since it will already inflict a disease or possibly be fatal</span>
