This is the second time I have purchased this product. The product does what it is designed to do and is cheaper than most other pH storage solutions. I used to have cheap pH meters that had to be sealed in a bottle of about 1/2 inch storage solution because the caps that came with them allowed the solution to evaporate for 24 hours. A week often passes between applications. The new tester has a small clear plastic cap that screws on with an o-ring, so it will probably be a long time before I need more.
ULAB Scientific 1000Ml Borosilicate Glass Beaker With Printed Graduation - Durable And Accurate For Lab Use (UBG1005)
12 Review
2-Pack 32Oz All-Purpose Heavy Duty Plastic Spray Bottles - Leak Proof, Adjustable Nozzle For Cleaning, Planting & Pet Care - Green
22 Review
3Pcs 500Ml CVNDKN Wash Bottles W/ Scale -16 Oz: Plastic Safety Lab Squeeze Bottle
13 Review
Graduated Erlenmeyer Glass Flask Set With Narrow Mouth - 500Ml Capacity
15 Review