"tentatively established" is a correct and usable phrase in written English.
It is often used to describe something that has been set up or arranged on a provisional or experimental basis and may be subject to change. For example, "The new guidelines were tentatively established in order to test their effectiveness."
After what was a "traumatic and very difficult" phone call between Aneeta and the woman on the inside, a channel of communication was tentatively established.
Considering additives that were deemed 'relevant' by the tentatively established criteria reduced the underestimation of toxicity for two of the three products.
In addition, the products contained a number of solvents (in total less than 10% w/w), preservatives and other additives assigned to none of the three tentatively established categories.
Scientists say they have tentatively established the oldest date yet for anatomically modern Homo sapiens: 195,000 years--almost 40,000 years older than the oldest remains dated so far.
Applying the here tentatively established criteria for 'relevant' additives ('CLP' and 'HAZ') would improve the predictability of product toxicity and thereby the protectiveness of the CBA, since additionally those components would be considered that significantly contribute to the product toxicity without triggering the classification of the product as hazardous to the environment.
Bonds are tentatively established, with Caesar leading the way to a peaceful interaction while his right-hand aide, Koba (Toby Kebbell) rightly distrusts the humans.
Three different sets of criteria were established to tentatively identify additives as 'relevant' for a CBA of the product.
Senate negotiators also tentatively agreed to establish a $50 billion fund to finance the dissolution of failing firms that could not be rescued through bankruptcy proceedings.
And the first writing he did, the book that would tentatively begin to establish his name, was The Invention of Solitude, the memoir - or "meditation" - as he calls it, of his father and his grief at that time.
"Were the World Mine" begins tentatively, but once its tone is established, its charm overcomes the inevitable weaknesses of a musical made on a stringent budget.
I submit, tentatively, that that feedback loop has finally been established for drones, and we're at the knee of an exponential growth curve.
