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 SE520 Conductivity/TDS probe with 1meter cable SE520 Price on request MA915B/2 pH glass electrode for with 2meter cable. Price on request HI1131P pH elektroda s jednoduchým rozhraním, BNC+pin Price on request