United Scientific Supplies 33314 | Laboratory Grade Polypropylene 4L Wide Mouth Reagent Bottle | Designed for Laboratories, Classrooms, or Storage at Home | 4,000mL (128 oz) Capacity | 1 Each, Clear

These bottles are awesome. Usually, when I order items like this, the bottles come crushed. These bottles are so strong that it's unbelievable. They are exactly 64 ounces, and the lids screw on tight, and they do not leak at all.

Funciona para lo que se necesitaba, llego a tiempo y parece ser de buena calidad y buen precio

I bought this with a sole purpose, It is exactly the right size and functions perfectly, low cost, Well made, like it was made to my exact dimensions, Highly recommend This product. 5 Stars!

This is a great product for storing extra car cleaning chemicals before adding them to my dispenser. Spray bottle. Super high-quality very well-made. I plan on buying it again.

Note: this bottle is made of food-grade plastic. The product info on Amazon doesn't mention it, but you can find a statement saying so on the company's website. I use it for mixing and storing meal replacement drinks, and it seems to work well so far. Comparing this (4L polypropylene bottle) to a Nalgene brand 2L high-density polyethylene bottle I own, it find the material to be sturdier / more rigid, which could be a good or a bad thing. It's not as smoothly machined as the Nalgene bottle - you can easily see and even feel the seams in the plastic where edges of plastic sheets were joined together. The Nalgene bottle's cap is a single piece of plastic that screws on with a snug fit, whereas this bottle's cap is not as perfectly fitted and comes with a rubber ring inside to ensure it seals properly. The rubber ring needs to be removed and washed separately, which is an extra hassle compared to the Nalgene bottle. Perhaps it's inevitable due to the materials, though; it may be that this bottle's rigidity makes it harder to get a good seal without a rubber ring, whereas the Nalgene bottle is more pliable, allowing its cap to "bite into" the lip a bit. The rigidity also means that if the pressure in the bottle changes (e.g. if you put in a hot liquid, close it, and let it cool), it can be difficult to wrestle the cap open again, so watch out for that. Other reviewers have mentioned this, but the bottle doesn't come with any "United Scientific" branding on it. Instead, it has "PolyLab" and "4000mL" embossed on the bottom. I don't think that means it's counterfeit - if you look up import records, PolyLab appears to be an Indian company that serves as a supplier / manufacturer for United Scientific, so I wouldn't be too worried. Other than those points, I'm generally pretty happy with this bottle. It's twice as large as my Nalgene 2L bottle but costs significantly less, and works about as well for my purposes. (Actually better, thanks to the size.) EDIT: 6 MONTH UPDATE I'm still very happy with this bottle. No issues have come to light over the last six months that I hadn't already covered in my initial review. It works great and is a good value.