HORIBA original solution 514-23 & 514-22Conductivity value 12.88 mS/cm & 1.41 mS/cm2 bottles of 14 ml eachFor LAQUAtwin meter EC-11/EC-22/EC-33LAQUAtwin 514-22 and 514-23 Conductivity Solutions SetSKU: HORSOLCOMEC $25.00 Regular Price$15.00Sale PriceQuantity*Add to CartBuy Now