Review on π Ultimate Accuracy Unleashed: Solution Precise Calibration Standard Packets by Keith Harris
What They Don't Tell You About Buffer Powders
I agree with that. It seems to work as advertised. When I calibrate my pH meter it seems correct and my plants will agree. However, the instructions say it should be used at a certain temperature. You may find this difficult to achieve. I had to buy a food thermometer to heat water to 78 degrees Fahrenheit. After that there were no problems. I'm glad I bought them and will buy them again.
- Laboratory Chemicals
- Very Expensive
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