It can have several possible meanings.
It sounds like a legal request for the forensic chemist/technician who analyzed the evidence OR perhaps a request for the results of the forensic exam itself to be present at trial as a witness. (???)
More would have to be known about the context in which this phrase appears in order to attempt a more precise answer.
Joseph Louis Proust (1754-1826) was an important French chemist, known for the Law of definite proportions.
The law of demand is that when you demand something you MUST say please and thank you, it's the law.
Law of demand is the higher the price the lower of goods demand for
why does the4 law of demand holds
Consumers is the law of supply and demand.
Assuming you mean "chemist shop", then it is known as a Drug Store.
marketing is a great example of law of demand
Robert Boyle of course ! He was a chemist.
the law of demand state there is a negative or inverse relation ship
Dmitri Mendeleev, a Russian chemist, was the first.
by the English chemist J.A.R. Newlands in 1865
Law of demand is the reason of the downward sloping of demand curve.Law of demand states the inverse relationship of demand of a commodity and it's price,and demand curve represents this inverse relationship of demand and price.So in this way they both are related.