Thick Glass Graduated Dropper Pipettes with Caps Set of 5(1ml 2ml 3ml 5ml 10ml)

In the first place I am purchasing for the sole purpose of putting liquid fertilizers into a hydroponic system rather than eyeballing it and being over or under by just one or two percentage points. I received my package very quickly and it was very well protected during travel, so no damage occurred during transportation. The quality is good from what I can tell from experience, as I've never owned any previously, so there isn't really any point of comparison. In spite of this, the glass is very thick and the measurements are clearly visible from any angle and I'm happy.

Roy Kemp

| Nov 16, 2020

The pipe cleaners are always useful too, so it's nice to have five and five more. I didn't have any problems with accuracy, but I also used the difference between markings instead of the absolute scale because I measure differences between marks. ), and squeeze drops into my pipette until it.

Leon Newman

| Jun 02, 2021

I was impressed with how well packaged and constructed these pipettes were. It was purchased so I could get precise measurements for homemade perfumes, and I thought they'd be more precise than drips from essential oil It's my first time working with pipettes so I'm learning as I go, but I find the oil lines hard to align with the measurement lines The inclusion of air bubbles completely changes the measurement, and I am still unable to measure accurately when no air bubbles are present. There are a lot of things that I have filled and unfilled, and I don't think I've gotten much better by filling them and unfilling them. I'm going to watch a video on YouTube on how to use them, so here is my advice These are very well made pipettes if you know how to use them or if you have the patience to get the technique right. I do wish one of the dropper tops was made of latex, one of the things I wish were different. The latex in that piece was off-putting to me because I'm allergic to it. I still find that this is one of the few sets that feature silicone dropper tops after spending about one hour looking at amazon. The tops of the majority of sets are all latex. Another advantage this set has in my opinion is its ability to fit a wide range of players. It would have been better if they had all been made of silicone/non-silicone If it was latex, I would have given it.

Meilani Contreras

| Aug 26, 2020

There are 5 glass pipettes included in this kit. There are 1, 2, 3, 5 and 10mL in each container, and a rubber bulb for each. With all of them graduated clearly, using this dropper to measure fractions of a milliliter should be no problem at all. There is only one complaint I have about the 1mL and 2mL bulbs -- they do not stay on the glass as tightly as I would like, but each of them is pretty accurate in volume for the pipettes they correspond to. I mean that it won't be too difficult to remove too much liquid from the pipette if you release the bulb too fast and put too much liquid into it. As far as being limited to the maximum volume of liquid that each pipette is intended to measure, they all appear to be quite accurate. Rather than filling the bulb with liquid, we'll just fill it with air. I found this product to be excellent for the.

Harlee Delgado

| Mar 15, 2021

The biggest bulb for the biggest pipette is definitely NOT silicon. The bulb is definitely natural rubber, and I suffer from a terrible allergy to latex and natural rubber (think hives, breathing issues). Having handled it just a few minutes ago, my hands are very itchy. kind of stinks, because finding a bulb of a large enough diameter that is not rubber is going to be a hassle. That being said, the rest of the day was Working and teaching in a clinical lab has given me a great deal of knowledge about The stuff I get from my suppliers for the lab is just as good as these. Are they suited for my workplace? It would be permissible if it was not in a clinical setting. Do the materials have a place in academic laboratories? Yes, you can. They are an excellent deal whether you are at home or in an Compared to the paper we get from our academic suppliers, these are thicker and more durable.

Adelyn HUMPHREYS

| Dec 13, 2020

A hundredth of a gram scale reads in hundredths of a gram, and so I wanted to measure exact amounts of water in a tray. It had become increasingly difficult to distinguish my old 1ml pipette marks. In the past, bulb dropper pipettes were unfamiliar to me. In addition, it was not possible to draw exactly as much as I needed, and if I squeezed out some, I would get air at The article was aimed at chemistry students explaining that to attach the bulb to the pipette, you press it against the top instead of sliding it on. If you quickly wipe away the fluid with a finger tip after drawing it, you are able to replace it quickly. It's then a Mohr pipette, where air is let in to drain the liquid to the line you have selected. The pipette may drain too fast, making it hard to stop exactly at a mark if it drains too fast. In a reservoir, when the level is just slightly above the level in the reservoir, it drains more slowly. When I use water, I like to use a 100ml cylinder because it has a depth of 8 inches or more. As the outflow was slow, I could slow it by pressing the pipette against the bottom of the reservoir. Taking a bulb and sliding it onto a pipette would be helpful to transfer fluid where precision was not required. Since I discovered how easy it is to read the pipette against a plain white illuminated background, I'm less frustrated. I had trouble finding the "full" line. It would have been easier if the glass were unmarked for five inches above that line.

Bethany Maldonado

| May 31, 2021

I would give it a 5 or 5 star was only able to give it a four due to the size of these things! It was my expectation that the items would be smaller. It took about 5 minutes to attach the bulbs to the 10ml pipette, and there is nothing I dislike about it except that it is so big. As I was attaching the bulb, I felt as if I would break the pipette. I will watch a video on how to attach a bulb to ensure that I do it right next time. I think I am going to fail this time.

Lylah LORD

| Sep 22, 2020

The class-marked items fall into this category These pipettes meet all of the industry standards (except the 3mL), and as far as I have tested, they perform In comparison to more expensive name-brands, I would like to try these It would be worth comparing different brands and figuring out if there are noticeable differences, but for educational or home use, I would recommend these products.

Carter Dickerson

| Sep 29, 2020