"Manufacturer recommendations" refers to the advice or guidelines provided by the company that made a particular product on how to use, maintain, or handle it effectively and safely. Full definition
This is why it is very important to perform a transmission fluid service as per manufacturer recommendations. (yourmechanic.com)
Look for pump manufacturer recommendations if parts are dishwasher safe. (lansinoh.com)
As soon as possible after pumping clean parts that come in contact with breast / breast milk either by hand or in the dishwasher (check pump manufacturer recommendations). (lansinoh.com)