Counting chambers Thoma with bright line, CE, with V-slash

with double net ruling, depth 0.1 mm, with 2 cover glasses thickness 0.4 mm, bright line, without clamps, for applications according to EU registration 2017/746 on in vitro diagnostic medical devices (IVDR), with CE mark and batch number for comprehensive information and traceability, ​multipack: 10 pcs.