Differences

This shows you the differences between two versions of the page.

--- fisher_acumet [2023/01/05 22:59] – [About] haley
+++ fisher_acumet [2023/01/05 23:04] – [Operating Procedures] haley
@@ Line 28: / Line 28: @@
 ===== Operating Procedures =====
+__Setup__
   - Connect electrode arm to the base
   - Connect power cable to outlet
@@ Line 35: / Line 37: @@
   - Rinse and blot-dry (don’t wipe) electrodes between each measurement using  DI water.
   - Between measurements, store conventional pH electrodes in storage solution, pH 4 buffer, or KCI solution. Always leave the filling hole of liquid filled and combination electrodes open. Refill when the level of solution gets below the manufacturer’s recommended level.
+__Standardization__
+  - Press and release the mode key until your digital display indicates pH mode. This key toggles between the pH, mV and Rel mV modes.
+  - Press the setup key twice and then press the enter key to clear an existing standardization.
+  - Rinse the electrode with distilled water using a squeeze bottle and immerse the rinsed electrode into pH 4 (pink) buffer solution.
+  - Press std again to access the Standardization mode. The selected buffer group is displayed briefly. Wait for the reading to stabilize.
+  -  Press std again to initiate standardization. The meter will automatically recognize the buffer (4.00 not 7.00) and then return to the Measure screen.
+  - Repeat steps 3-6 with the pH 10 (blue) buffer solution. When the meter accepts the second , pH 10, buffer solution, it will briefly display the percent slope associated with the electrode’s performance prior to returning to the Measure mode. If the electrode is within the range of 90 – 102%, the GOOD ELECTRODE message will appear.