The phrase "are necessary in order to identify" is correct and usable in written English.
It can be used when explaining the importance of certain elements or criteria needed for identification purposes.
Example: "The following criteria are necessary in order to identify the species accurately."
Alternatives: "are essential for identifying" or "are required to determine".
Raz's explanation of the nature of law is not undermined by the fact that evaluative judgments are necessary in order to identify the content of the law, as long as it is still possible for legal directives to have the exclusionary force that, in his theory of authority, they claim.
While the HIV case-finding capacity of the health system in Vietnam is limited, additional HIV testing strategies are necessary in order to identify a high proportion of HIV infections early and to mitigate the impact of these infections through treatment and enhanced prevention.
Further investigations are necessary in order to identify the reasons for the high percentages in these provinces besides the populous nature of these two provinces.
Couple data are necessary in order to identify to what extent the association between mental distress and divorce exists at the individual level or at the couple level.
However, new studies are necessary in order to identify which factors are influencing the course of the recovery of health status after a COPD exacerbation.
Regular screening for diabetic retinopathy and diabetic maculopathy diseases is necessary in order to identify the group at risk of visual impairment.
Therefore, a more computational approach is necessary in order to identify good candidates.
Further re-sequencing of STAT4 might be necessary in order to identify the true functional variants.
Sometimes a longer follow-up time is necessary in order to identify substantial changes in survival outcome.
Indeed, some degree of heterogeneity in excess of a baseline amount associated with a statistical model is necessary in order to identify important determinants of response.
Research exploring the risk and resilience factors that contribute to the syndrome of NCCP is necessary in order to identify the best ways to intervene for each individual.
