Save. You can exchange data, such as contacts, by pairing two Bluetooth-enabled devices, selecting the contacts you want to transfer and sharing them over the Bluetooth connection.ave. You can exchange data, such as contacts, by pairing two Bluetooth-enabled devices, selecting the contacts you want to transfer and sharing them over the Bluetooth connection.
technical-grade - containing small amounts of other chemicals, hence slightly impure; technical-grade sulfuric acid. technical grade. chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions.
In the good old days that indeed was how grades were determined. Make the product, then test and sell to the highest spec ( Usually pharmaceutical, then the cheaper veterinary, then technical grade). For chemicals, analytical grade, followed by reagent grade, followed by technical grade. I once worked for a company that tested all the raw material products, and would blend different grades to achieve maximum volume of lowest ( but passable ) specification, and then retest.