Water Quality Check for Aquarium

Water Quality Check with the LAQUAtwin Series

LAQUAtwin series is a compact water quality tester. Using Ion Specific Electrode (ISE) technology, they are available for Conductivity, Calcium ion, Nitrate ion, Potassium ion, Sodium ion and pH measurement. 
Using just a single drop of liquid, the LAQUAtwin proprietary flat sensors can quickly and accurately　measure the values of the chemical parameters for artificial seawater or freshwater requirements.

Seawater Salinity Measurement

LAQUAtwin conductivity meter (EC-11,EC-22,EC-33) can be used for seawater salinity 
measurement. Take conductivity measurement of seawater then convert into 
salinity concentration referring to the PSS-78 (Practical Salinity Scale of 1978) 
conversion table.

*Automatic salinity conversion of EC-11,EC-22,EC-33 is not based on PSS-78

Seawater salinity conversion table

Calcium Ion,Sodium Ion,Potasium Ion and pH Measurement

With LAQUAtwin, quick and easy check of Ca²⁺ (Ca-11), Na⁺ (Na-11), K⁺ (K-11) and pH (pH-11,pH-22,pH-33) are possible. Error of measurement data to artificial seawater with LAQUAtwin is within ± 20%.

※ Chloride ion is one of interfering ions for nitrate ion measurement. Chloride ion in seawater or artificial seawater around 20,000ppm will affect the nitrate ion measurement of less than 500 ppm.

Measurement data of artificial seawater by LAQUAtwin

* The error may become larger for extremely conterminated samples.