PH buffers are solutions of a known and fixed PH which are used to calibrate
meters and should be done on a regular basis to ensure ongoing accuracy from
the meter.
Pour out a small amount to use for calibration and then discard solution when
finished, do not pour back into container.
Use PH buffer 7 to calibrate meter to neutral and then use PH buffer 4 to calibrate
the correct acidic level for meter.
S
- Small Item - £3.99
[Clonex, Jiffy Plugs, etc] M - Medium
Item - £5.99
[Nutrients, lamps, etc] L - Large
Item / Multiple Item Order - £11.99
[Grow Lights, tanks, etc]
You pay one shipping price per order not per item. Prices include insurance.
Shop
open 7 days a week 'til 9.00pm at night!
