Pulling A Field that is Null

I am trying to pull a set of records in a Access DB where all fields of column X are NULL. I am using an ADO and trying to use the following SQL to pull the recordset but it does not like this, Any suggestions for this statement please:

strQuery = "SELECT * FROM REPOINVENTORY WHERE DateTtlRcvD =" & vbnull

Try:

Code:

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strQuery = "SELECT * FROM REPOINVENTORY WHERE DateTtlRcvD = NULL"

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THAT DIDN'T WORK. THANKS THOUGH

strQuery = "SELECT * FROM REPOINVENTORY WHERE DateTtlRcvD Is Null"