CALIBRATION FLUID pH BUFFER 4.0 1LT FERNLAND PHBUFF4-1
pH Buffer 4 is a solution of known and exact pH.
If your pH meter doesn’t read pH 4 when the probe is put into the buffer then the meter is wrong and needs calibrating.
It is recommend that the meter is checked with pH 7 Buffer at least once a week, and checked with pH 4 buffer at least monthly.
Each pH meter comes with instructions on how to calibrate the meter.
Pour enough buffer from the bottle to cover the glass end of the probe when calibrating, and discard the solution after.
It isn’t best practice to return used buffer to the bottle it came from.
Correct pH of hydroponic nutrient solutions is critical.
Mineral absorption by the roots is pH dependent. If the pH is outside the range of pH 5.5 to pH 6.5 then plants will have increasing difficulty absorbing minerals and a mineral deficiency would soon develop even though in all other respects the hydroponic nutrient is OK.
The pH should be checked when the nutrient solution is first made, and if used in a recirculating system, the pH should be checked every day.
Common Questions
What is pH Buffer 4 used for?
pH Buffer 4 is a calibration solution of known and exact pH. It's used to check and calibrate pH meters. If your pH meter doesn't read pH 4 when the probe is placed in the buffer, your meter needs calibrating.
How often should I calibrate my pH meter?
It's recommended that you check your pH meter with pH 7 Buffer at least once a week, and with pH 4 buffer at least monthly. Always refer to your meter's instructions for specific calibration steps.
How do I use the buffer to calibrate?
Pour enough buffer from the bottle to cover the glass end of the probe, then follow your pH meter's calibration instructions. After calibration, discard the solution used — don't return it to the bottle.
Why is correct pH important in hydroponics?
Correct pH is critical because mineral absorption by plant roots is pH dependent. If pH is outside the ideal range, plants will have increasing difficulty absorbing minerals and deficiency can develop even if the nutrient solution is otherwise balanced. Check pH when the nutrient solution is first made, and in recirculating systems, check every day.
Do you ship this product Australia-wide?
Yes, this product ships Australia-wide via road courier. It is too large or heavy for Australia Post. Call us on (07) 5482 1692 if you have any questions about delivery to your area.
Can I Click & Collect from Gympie?
Yes — Click & Collect is available from our store at 55 Tozer St, Gympie. Open Mon–Fri 8am–5pm and Sat 8am–12pm. Click & Collect is FREE on orders of $175 or more, or a flat $10 on orders under $175. Select Click & Collect at checkout and we will have your order ready.