PH and EC meter calibration solutions (testers)

The Dude 4552

The Dude 4552

Well-Known Member
Hey, I just received the pH meter and EC Meter I ordered but they didn't include any calibration solution and they don't automatically calibrate themselves. My question is does anyone know the pH of common items I can use to calibrate with?

Thanks.
 
jordann9e

jordann9e

Well-Known Member
1.0 battery acid (sulfuric acid)
1.8-2.0 limes
2.2-2.4 lemon juice
2.2 vinegar (acetic acid)
2.8-3.4 fruit jellies
2.9-3.3 apple juice, cola
3.0-3.5 strawberries
3.7 orange juice
4.0-4.5 tomatoes
5.6 unpolluted rain
5.8-6.4 peas
6.0-6.5 corn
6.1-6.4 butter
6.4 cow's milk
6.5-7.5 human saliva
6.5-7.0 maple syrup
7.0 distilled water
7.3-7.5 human blood
7.6-8.0 egg whites
8.3 baking soda
9.2 borax
10.5 milk of magnesia
11.0 laundry ammonia
12.0 lime water
13.0 lye
14.0
you're welcome ;)
 
The Dude 4552

The Dude 4552

Well-Known Member
Yes I am aware of the solutions that can be purchased I was just looking for another way to calibrate them. The only way for me to get the solution is on eBay and I dont want to wait for them to come to use the meter. Thanks though.
 
Picasso345

Picasso345

Well-Known Member
The Dude 4552 said:
Yes I am aware of the solutions that can be purchased I was just looking for another way to calibrate them. The only way for me to get the solution is on eBay and I dont want to wait for them to come to use the meter. Thanks though.
Click to expand...
Ph calibration substitution is easy enough, but the TDS is another kettle of fish entirely. Ph is a quality while ppm is a quantity. You would need to find a liquid that is of a known salinity level to pretty exacting levels.

Maybe some contact storage solution? Have someone measure the ppms of a known brand and then you could go and buy that exact same brand and use that to calibrate your meter?

Best I can think of.
 

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