easy calabrate your ph checker

so i recently relized that my hanna ph checker was off. and i had not a clue how to recalabrate it....so i did some thinking, and googleing, if i could just find something around the house and no its ph, i can just adjust my ph checker to its ph,...well after googling atleast 50 things, i came across a drink that has a pretty popular ph because its known to deterate teeth and human bone..coca cola...it has a ph of 3.4......wah la!!!! ph clabrated

I got these ph test strips
100 of them for like 2.50

walla no calibration necessary

Yah, PH Test strips are great for saving money, if plus or minus .6 PH is ok for you. For someone doing a DWC grow that fluctuation could very well smoke their plants.
On the Coca Cola PH calibration. Why not just fork out the $7.00 for the real calibration solution. Most PH Pens Calibrate to 4.0 or 7.0. Some of them can adjust to what ever number you want though. But you are trusting some Soda Pop plant with your plants life. Coca cola is not sold to be at a certain PH like calibration solutions.
With all that said. I have none people to grow crop after crop with out testing the PH ever. Sometimes this happens when you have just the right water PH and thebn use the same Nutrient ratio that just happens tio adjust it where needed.

I have this hannah ph pen

its a pain in the azz. plus I buy my calibration solutions from American science and surplus
its still a pain in the azz

i got these test strips and they come with a color decal
i go for 6.0. Calibrates out the same as the pen

that is when the pen is calibrated