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.
Get Your All-Purpose Cleaning Solution With Bealee'S 24 Oz Plastic Spray Bottles - 2 Pack
16 Review
Laboy Glass 500ML Single Neck Round Bottom Boiling Flask Heavy Wall With 24/40 Joint Heating Reaction Receiving Flask Organic Chemistry Lab Glassware
16 Review
2-Pack 32Oz All-Purpose Heavy Duty Plastic Spray Bottles - Leak Proof, Adjustable Nozzle For Cleaning, Planting & Pet Care - Green
22 Review
Valchoose LDPE Economy Wash Bottle, Narrow Mouth Squeeze Bottle Medical Lab Plastic, Safety Squeeze Bottle No Spill, Bend Mouth Watering Cans (500Ml / 16Oz / 1 Bottle)
14 Review