10mL Micropipette, Lab Calibrated Single Channel Pipette, Four E's Scientific Adjustable Variable Volume Micro Pipettes, 1-10mL

Bought it to fill essential oils, the only downside is the pipet tips - they tend to melt plus if higher viscosity liquids being filled this might not be as accurate , so keep that in mind.

Good

I do 8 different marine water tests for our aquarium each week, the majority need a 10ml sample, I have another sized pipette for smaller quantities, this 10ml version just makes things quicker rather than taking 10 x1ml samples as previously done

10mL Micropipette,Four E's====================The Four E’s are a nice brand that have a range of pipettes from 0.1 microlitres all the way up to 10,000 microlitres (1,000 microlitres = 1 ml). This is near the top range taking 1 - 10ml. These are a fraction of the cost of the big brand pipettes, but work just like them.The micropipettes are generally used to transfer small amounts of liquids. They are usually used in conjunction with a small disposable sterile plastic tip.It has two plungers, the big main one for drawing or removing liquids and the other to eject the plastic tip. The big main plunger has a round wheel that can be rotated to adjust the amount. In this one, it works to a tenth of a ml from 1 - 10ml. The wheel allows you to pass the minimum and maximum, *DONT*. Using the pipette out of its range at the very least will need calibration and the very worst will damage the pipette.You can see the amount you have chosen in the window with the white on black numbers. To draw liquid, you depress the main plunger to the first stop. I was initially getting this wrong as I was expecting the first stop quite high. It isn't on this model, for the 1-10ml range. On this, the first stop is very low. You will feel a very slight resistance when you get to it. Lower the pipette a few ml into the substance you are drawing then slowly release the plunger. There should be no air bubbles if done correctly. To discharge slowly push the main plunger down to first stop, I like to pause a second, then slowly continue to the second stop. Again it's important to release the plunger slowly whenever using it to avoid air bubbles. There is very little gap between the first and second stop, in this model it's normal. This set also includes a few extras such as the re-calibration spanner, grease, filter etcThis feels and works like the real thing, it definitely takes me back to my college days. I would definitely recommend it for school and home use, although it would be cheaper buying these in a set to get a range of values for schools and students using these at home.Other home uses include taking aquarium samples or pool samples for water tests, home brewery for adding exact amounts of flavors, and any other reason you would need an exact measurement.

Accurate But Far Too Expensive

Commonly used biomedical research labs, but also an excellent option for consistent and accurate measurements in your own apothecary! The beauty of these instruments is that when used correctly, the only part that ever gets contaminated or exposed to the measured substance is the pipette tip and these can be used and replaced easily and cheaply.The measuring mechanism is completely isolated from the substances and operates by air suction. Depressing the top plunger to the first stop point expels a regulated and controlled amount of air from the suction tube by dialing in the volume of liquid to be withdrawn from the pipette. As you dial in different volumes, the suction tube plunger is lengthened or decreased to regulate the suction volume.Having dialed in the volume to be drawn into the pipette, you gently squeeze the plunger to the FIRST stop point and while holding lower the pipette tip just below the level of the liquid, then slowly release the plunger to withdraw the liquid into the pipette.To expel you squeeze down on the plunger again to the first stop point, pause a second, and finally push past the stop point to the end of the plunger travel to expel any excess held in the pipette point.How do you check the accuracy of a micropipette?The most common way to check your pipette accuracy is by weighing water. The density of water is 1 g/mL. This means that every microliter (µL) should weigh 0.001 g. In other words, if your pipette is accurate, the amount of water you dispense will equal the amount the water weighs.I tested this and found the micropipette to be dead-on accurate every time. As with all these devices, you should always store them vertically to avoid any excess liquids traveling into the pump mechanism. Verticle storage also ensures even gravity pressure in the plunger mechanism direction, up and down.I make my own infusions, decoctions, essential oil mixes and perfumes. Accurate measurements are crucial to consistent results. This micropipette, complete with a box of disposable tips will be a wonderful extra in maintaining good results and more consistent recipes. Given the low price, this is first class for amateur use as well as in small labs.

This is very well priced compared to the well known laboratory suppliers. It is perfect for me as a demonstration pipette that I can use to record teaching materials at home and it is also perfect for student use especially when they are first getting use to using micropipettes and when they are likely to make all of the mistakes that make the technical team scream. If you are going to work to a very high level of precision then you might want something more expensive but for most uses this is going to do, as I have never seen even the most professional biologist prepare media using a volumetric approach (I am a chemist by training and it makes my heart pound seeing them use a beaker to prepare stock solutions).