Block for Visible, 12 x 22mm, depth 50mm, round Back Catalog number: MU22-00-0881 Availability: In the manufacturer's stock Price on request - + Recommended MU22-00-02 Block for Visible, for 4ml vials, 15mm*12 (D.32mm) Price on request H3565-O2REG Optional O2gas regulator Price on request 2239 VERTEX THERMOMETER Price on request