The pH Calibration Powder 4.01 + 6.86 is an ideal solution to calibrate your Comboinstruments or other electronic pH meters.
Buffer pH 4.01 + 6.86.
Tolerance range ± 0.01 pH.
No color, no contamination of the electrode.
Prepare the solution in a glass or inert plastic container.
Shelf life after reconstitution: 1 month.
Store in a cool place away from sunlight.
Economical, reusable, 250 ml buffer capacity.
On the back of the sachet is a table for correcting the buffer value depending on the temperature.