Review on VIVOSUN 0 05Ph Accuracy Readout Temperature by Maribel Gilbe

I bought these specifically for ppm and ph tracking and they work great! I use them for exotic gardening and it's extremely important to keep track of these things. I tested both pens, but I use the pH pens every day to make sure I have the right nutrient intake. However, I will use a different paddock when it comes time to pre-harvest rinsing! Some people forgo it, but I think they lose productivity as a result. Paying attention to all of these details is important to maximize potential. I don't have to pay a lot of money for an expensive tester, so these are ideal solutions! This is a must have for any gardener and I like to think of it as insurance. If they are not used, a small mistake can become very expensive! Due to the low price, I recommend everyone to buy them to be safe and not regret it. PROS: * Very easy to use and calibrate * Separate sleeves for each pen * Low cost * High accuracy CONS: * Batteries in a pen didn't last long