I've seen other reviews complaining that it's mostly water. This is a 0.1M solution and the pH for NaOH should be around 13 on the pH scale at this concentration. I tested it with my pH probe upon receipt and it was around 12.90.
Graduated Erlenmeyer Glass Flask Set With Narrow Mouth - 500Ml Capacity
15 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
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