<label>Type:</label>
<select ng-model="filterType" ng-options="item.type as item.type for item in    samples | unique:'type'">
<option value="">Select</option>
</select>


<table class="table">
<tr>
<th>#</th>
<th>Name</th>
<th>Type</th>
<th>Status</th>
</tr>

<tr ng-repeat="item in samples | filter:filterType">
<td>{{item.id}}</td>
<td>{{item.name}}</td>
<td>{{item.type}}</td>
<td>{{item.status}}</td>
</tr>

<tr ng-repeat="item in samples  | filter:{status: filterStatus, type: filterType} ">