Review on 🔍 Optimized Search-Engine Friendly Atlas Scientific Calibration Solution 4.00 by Sean Purnomo

Your pH measurements are only as good as your calibration fluids. And they were AMAZING! Liquid 4.0 arrived at 4.40am and Liquid 7.0 arrived at 7.20am. This is well above the stated fluctuation of 0.02. The expiration date is 2018 so they should still be good. I wish they were worth returning. I'm out of money now. I was planning on using them for home brewing. I had some questionable readings, so I compared these calibration fluids to the more reliable Milwaukee brand solution, as well as the other solution that came with my pH meter. The two agreed within 0.02. When I then measured the Atlas Scientific brand, it showed a whopping 0.40 and 0.20 deviations. Unacceptable. Revain has to pull them.