New Zealand captain Tom Latham is still looking for improvement when the Blackcaps aim for a clean sweep of victories in the final match of the one-day international Tri-Series against Bangladesh in Clontarf on Wednesday.

Tom Latham has been appointed New Zealand captain for one-day matches against Ireland and Bangladesh ahead of the Champions Trophy, New Zealand Cricket said on Thursday.

Opener Imrul Kayes was stretchered off the ground with pain after scoring 24 in an opening stand of 46 with Tamim Iqbal and his departure sparked a Bangladesh second innings collapse in the final session on the fourth day of the opening Test against New Zealand at Basin Reserve today.

The manufacturer of the pink ball to be used in next month's first day-night Test match said on Monday its revolutionary innovation is up to scratch amid growing criticism.