Does the Hach Sension range of meters include a carry case?
The Hach Sension meters are an established range of portable and benchtop electrochemistry meters for pH, conductivity and Disssolved Oxygen.
The portable meters are all supplied with a carry case.
Camlab Rapid Epoxy and Glass pH Electrodes with Liquid Junction
Have you seen these new pH electrodes from Camlab? They feature a liquid junction design similar to the Ross Sureflow® but at a fraction of the price. It’s special design allows you to create a fresh junction by simply pressing the top cap of the electrode. This opens the lower portion a fraction allowing fresh electrolyte to flow through the gap. Releasing the cap traps a film of filling solution creating a brand new junction every time. Anyone trying to measure pH on samples with high protein content, sulphides or pectin will be all too familiar with the gradual poisoning of the junction and subsequent loss of performance and drift. EpoxyTough Double junction pH designs go some way to eliminating this but even these will die in time. Using the Camlab Rapid pH electrodes with liquid junctions will eliminate this and give you faster and better results for longer.
Pushing the top cap forces filling solution through lower portion creating a fresh junction
The Camlab Epoxy Tough and Rapid pH electrodes both feature a flat electrode design which is ideal for measuring the pH of flat surfaces such as meat and cheese.
For softer materials you may find the spear tip models more useful. These allow you to penetrate the sample with probe.
Both these types have double junction references to avoid blocking caused by proteins and pectins.
Camlab pH Electrode Soaker storage bottle
To prevent the glass pH membrane and junction from drying out it is recommended to store your electrode in an electrode storage solution. The best solution for this is 50% saturated KNO3 and 50% pH 4 buffer in conjunction with a soaker storage bottle. pH buffer is used because the glass prefers a slightly acidic environment, adding the KNO3 avoids pH memory effect. Avoid using coloured pH buffers to prevent discolouration of the reference solution
