by Will Stockton | May 23, 2024 | Technical Articles
Cleaning a Fluoride ISE Q My Fluoride ISE has stopped measuring at very low levels (below 0.1ppm). It used to be very sensitive but no longer what can I do? A The sensitive membrane will have been contaminated or coated with something. The easy solution is to clean...
by Will Stockton | May 23, 2024 | Technical Articles
Electrode Storage Q In my lab I noticed that the conductivity electrodes are stored in pH7 buffer with all the pH electrodes. Can that be right? A Great question! No is the short answer. Conductivity cells should be rinsed after use with deionised water and then...
by Will Stockton | May 23, 2024 | Technical Articles
Chloride ISE Maintenance All crystalline ISEs do start to develop an oxidised layer on the crystal after a period of time. If the electrode is immersed for a long time it also gets a little soft on the outer layer. All you need do is dry the grey crystal surface and...
by Paul Stockton | May 8, 2024 | Technical Articles
Aluminium Measurement using a Fluoride ISE Although there is no commercially available sensor for Aluminium, the concentration in solution can still be measured using a Fluoride ISE due to the reaction between Aluminium and Fluoride Ions forming a stable compound....
by Paul Stockton | May 8, 2024 | Technical Articles
Fluoride in Urine Measurement Fluoride in urine is measured using a known Addition method. The QP459 ION meter has this method as standard and will display results directly in ppm Fluoride. The instrument will also guide the user through the test. If you do not have...
