pH Sensor InPro4800i/SG/225 Back Catalog number: 52005384 Availability: In the manufacturer's stock Price on request - + Recommended 18901199 PH4.00 500mL 4.00pH, one bottle 500,00 Kč MA921B/1 Double junction orp platinum electrode MA921B/1 Price on request 18901211 12.88mS/cm 250mL Conductivity Solution, one bottle 500,00 Kč