CHEMSOLUTE Universal pH-indicator paper, pH 1-14, 5m x 7mm, Refill pack with 3 rolls Back Catalog number: 2814-3ROLL Availability: In the manufacturer's stock Price on request - + Recommended MA919B/1 Glass pH electrode, refillable, BNC, 1m Price on request 18901149 DDO01-2M-H Polarographic DO probe 2 990,00 Kč MA811/2 Conductivity/TDS probe with 2meter cable (MC410). Price on request