United Scientific™ UniSafe™ Laboratory Grade Wide Mouth LDPE Vented Chemical Wash Bottle, Sodium Hypochlorite, 500mL (16oz), 4-Color, Pack of 6

Mine came labeled (hazmat & SDS) for bleach so make sure you order what you need. I could scratch the labeling off with a fingernail if I tried hard but it's on there good. For normal handling it should last a long time. I suspect it could be touched up with a Sharpie if needed. Honestly, I mostly use mine for squirting at my dogs to discipline them or watering plants. Now I used similar bottles in an industrial setting for a few decades so I'm familiar with their normal uses. Only time will tell if they'll hold up but the lid stays on securely and they squirt well when squeezed. They are labeled as "safety vented" and I believe they are. I don't know how that works but when I plug the nozzle with my finger I can squeeze the bottle with no liquid coming out. When I try this with the bottle upside down it builds pressure instead of venting. Amount dispensed (flow rate) can be varied by the amount of pressure applied. They don't drip or leak when knocked over. The dispensing nozzle has better reach than most I've used and is good for precisely locating where you want the flow to go. They look like they'll hold up well to routine use. I wish we had bottles this good when I was working. I worked in an ESD environment and these are not labeled ESD safe so be careful to order exactly what you need. I think you'll be happy with these bottles.

This is just what our lab needed, squeeze bottles for bleach. They work well, squeeze easily and distribute the bleach solution. The bottles are white plastic, not opaque, so you can't exactly see how much is remaining the bottle, but you can tell approximately by how much it weighs. The printing is great, good identification of what's inside and the hazard placard too.I like the set of 6, and we are already using them in our lab for decon lab surfaces, benches, and bio hoods. The plastic is rigid more than our usual squeeze bottles, a little tougher to squeeze, but shouldn't be an issue. And the dispense nozzle is somewhat wide, so when you squeeze, you get a pretty good stream and more volume dispensed than our original sodium hypochlorite bottles. I wish they would make a fine dispense tip/nozzle that didn't allow quite as much flow, and then if you need more flow, you can simply snip off the tip a little more to make it bigger. But this isn't a huge issue, and they work well.

TL;DR; opaque; lettering can be removed with Acetone; 2 part nozzleI find these wash bottles handy to have in the shop for dispensing liquids.These bottles are marked up for bleach and they feel rather solid though they are marked #4 which is LDPE. The white colour makes them pretty much opaque which I find to be a disadvantage but may be useful for some chemicals. The nozzle of these is in two parts vs the style I am more familiar with. The outer nozzle is moulded into the lid as a single piece and the inner siphon tube is a proprietary tube that snaps onto the lid from the inside (pics). Overall the bottle is probably more leakproof than other designs I’ve seen and has a very quality feel to it.I’d prefer these not to be opaque so I could see the contents more easily but they are probably translucent enough for that purpose. The writing can be removed by and large with Acetone i.e. nail polish remover if you have another purpose for these.I’m fairly impressed and have to give 5 stars.

Ordered these Sodium Hypochlorite (Bleach) bottles to mix bleach + water solution for cleaning. I normally label spray bottles but sometimes the label or sharpie writing can smear + smudge off. These bottles are properly labeled and I don't see the label wearing off.When held upside down, they don't seem to leak at the cap, it closes for a secure fit when screwed on tightly. A firm squeeze is required for liquid to flow out of the tube. It's a soft stream. I like a stream of liquid when using a bleach solution better than a spray, since it's more controllable and I can direct it to exactly where I want it. And the bleach also doesn't mist into the air to then be inhaled like spraying it might.I won't store bleach in these bottles, but it's clear what they're used for. For my purposes, these bottles work out great.

I ordered these wash bottles for use with fuel, not bleach. The reason for the 4 star rating has to do with the fit of the top. The top easily crossthread and can spill liquids. Not very safe with hazardous or corrosive chemicals like bleach. I use these to fill carburetor bowls when troubleshooting issues. I also use these bottles to precisely water plants in hard to reach places. Overall decent, but I wouldnt use with liquids that could do damage if they leak.

I was initially unsure about investing in new wash bottles instead of keeping using old ones. However, these wash bottles have proven to be a worthwhile purchase. They have held up well when used with bleach and I have even relabeled a couple for water and distilled water.Worth it to have more than 2 laying around and always looking for them. Treat yourself!

OK - I'll be honest: it's been years since I did labwork, but I always thought these wash bottles had potential around the home. One's near my grill, when I want to squirt some water on there. I'm finding uses for them at my workbench in the garage - a piece of blue tape with a description of what's in them works fine.

I can't believe how bad someone's advice can be in Vine reviewer world. NEVER drink out of any chemical bottle.