20 ML BAG 35 ppt calibration solution for the calibration of salinity testers

CALIBRATION SOLUTIONS FOR APEX SYSTEM   pH Calibration 4, 7 and 10 Standards. Select the 7 & 10 standards to calibrate a pH probe for a Saltwater Aquarium Select the 4 & 7 standards to...

Do you think it’s important to maintain salinity precisely? We’re with you. That’s why we created AccuraSea Seawater Reference Solution, the only calibration solution of its kind made from real seawater. It’s pure natural sea...

Our reference is ideal for checking various water tests, as well as arometers and refractometers.   Our reference includes: Salinity 35 PSU Carbonate hardness 7.5 ° dKH Magnesium 1313 mg / l Calcium 421 mg...