300PCS 3ML Plastic Transfer Pipettes,Disposable Graduated Transfer Pipettes Dropper for Essential Oil Mixture, Scientific Experiment, Make up Tool
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They came in a sealed bag with no label, so it's difficult to tell, but they look exactly like ones I've bought before that were made in China.
The best way to find out is to give it a shot. I'm not sure if they're appropriate to use.
Selected User Reviews For 300PCS 3ML Plastic Transfer Pipettes,Disposable Graduated Transfer Pipettes Dropper for Essential Oil Mixture, Scientific Experiment, Make up Tool
Pipettes have been a part of my model train work for years. I've always bought them in packs of 6 or so at a time, paying around $8 for the lot, and assumed that was the way it was. Well, believe me when I say that this is the way to go. I bought it, and yes, you do get 300 points for next to nothing. I have a supply that will last me a lifetime; they are intended to be disposable, which is fine; I use them to apply diluted white glue to my railroad, but they could be used for any other liquid transfer task. They may be single-use at this price, but I implore you to rinse and re-use them. use them.
These are so far out of bounds incorrect that they could have been left unmarked. br>br>I used to think they were bad. Not by a long shot. I'm having a 5% failure rate at the moment. Never, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, never Again. br>br>When two pulls of 2 are combined. 5 mL equals just under 4 mL. Quality control does not appear to exist in the 5ml range.
Because airbrush paints don't usually come with a dropper tip, I bought these to mix them up. When I'm weathering a railroad model car or building, I don't always need a lot of paint, and this helps me pull out just what I need. br>br>They're also chemical resistant, which comes in handy when I clean them out in thinner. br>br>The best way I've found to load these pipettes is to squeeze the bulb to expel the air and then place the pipette into the paint bottle while holding the bulb. When I let go of the bulb, it draws the paint right up into the pipette and holds it there until I transfer it to a mixing pot to thin it out. br>br>The pipettes have a capacity of 3 ML, which is equivalent to about 1/10th of an ounce. On the outside, they are graduated, so you only use what you require. br>br>Another use for this could be to refill an e-cigarette with e-liquid. juice, essential oil diffusers, or even food coloring by the drop in the kitchen br>br>It works for me, and at $8 for 300 pipettes, it's a good deal. They're extremely cost-effective at 99. Each one costs three cents. The best part is that if I forget to clean one and the paint dries in the pipette, I can simply throw it away and start over. br>br>This is also useful for custom blending paints into a desired color, such as most rust-colored paints, which are too bright. With these, I pour about 2 ML of rust color paint into my mixing bottle, add 2 drops of flat black paint, and 5 drops of thinner, and stir everything together for 10 seconds with my airbrush paint mixer. Now I have the perfect shade for rusted items like rails and train wheels, as well as the right consistency for spraying and a flat finish rather than a glossy finish. br>br>At $8, this is a great deal. You get 300 of them if you work with essential oils. In addition, I thoroughly examined them and found no air leaks, indicating that they are well-made. br>br>This one gets 5 stars from me!.
These pipettes were purchased to use with my nutrient solution for my "Tomato Plants," which I mix with water. So far, it appears that one out of every ten people is affected. The pipettes on number 15 have a manufacturing defect that prevents them from properly holding liquid. Because of this, it can be aggravating to prepare everything and grab your iPad only to be unable to complete the task at hand. For example, I sucked up my nutrients/adjusted the PH, only to have the liquid drain back out of the pipe. Apart from that, I'm quite pleased with it. I wish they had told you how to properly measure the amount of liquids in your paper, to name one petty complaint. And/or how to properly write it on paper so you can measure it. If you need a quick and easy way to add small amounts of liquid, for example; These pipettes are adequate for UP/DOWN, but I've discovered that those children's liquid measuring cups work well for any liquid that is one ml or larger. If I didn't have anything else, I'd use a pipette for anything smaller. I'm looking for a more accurate and quick way to measure my nutrients.
I use these for resin because using thicker fluids makes it difficult to accurately place specific colors in specific spots in molds. Because the bulb is so thin (squishy), it is difficult to gauge your hand pressure while using it, it occasionally blows out and splatters all over the place.
Between the mixing bowl and the tubes, there has been very little dripping. Because I steam the pipettes a little before drawing up the liquid, there is very little waste from cooling inside them. I will order from you again because of the excellent value and quality of the product.
These are used in labs by my wife, who teaches a high school biology class. They measure in graduated cylinders because they aren't always accurate, but they have good suction and last a long time. None of them have broken into a laboratory to expose a child to chemicals, so that's a plus.
For the money, it's a good deal. They appear to be a little thin, which reduces suction power and prevents me from filling the stem completely. This isn't a big deal for me because I use them to extract oils from jars and then weigh them out to an exact weight. I'm going to buy more.
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