3 $ify Let E be a Hilbert C*-module over some C* algebra C*-algebra and let$h \in K(E)K(E)$. Due to B.Blackadar'sB. Blackadar's, "K-Theory for Operator algebras" Thm.17.11.4 Thm. 17.11.4 for a separable C* algebra A, C*-algebra$A$, represented by elements of B(E),$B(E)$, it is possible to construct a countable approximate unit {u_n}${u_n}$contained in C*(h)$C^*(h)$, such that {u_n}${u_n}$is quasicentral for A$A$and u_{n+1} u_n=u_n$u_{n+1} u_n=u_n$. The question is: is it always possible to make u_n$u_n$be projectors (or, at least, idempotents). The question seems to be obvious if E$E\$ is just a Hilbert space, but I'm not sure for Hilbert modules.