We have purchased 1 mg of a neat polyethylene standard and would like to weigh out 250 mg of it to use as a standard for our microplastics research. We are sending out our samples to a contractor for pyr-GC/MS analysis for mass and polymer identification. We want to send them a known mass of the PE. The PE adheres to the bottle -static charge? We tried using a static gun but that doesn't seem to work. What is the best way to measure out the PE accurately?