Four E's Scientific Single-Channel Adjustable Volume Pipettors 0.1-2.5uL

Llegó en excelentes condiciones, perfectamente calibrada, ya el tiempo dirá cuánto dura. A diferencia de otras marcas, ésta trae un manual de uso perfectamente detallado, su grasa para lubricar el mecanismo, una punta de prueba, su llave para ajustar y su soporte para colgar, así como identificadores de colores para el pistón. Muy buen producto.

Product was what I was looking for as far as price and quality.

I have been using a regular plastic syringes to withdraw multiple solutions to use on my nano reef tank, from liquid nutrients to water samples for testing and it's always a circus to hold on one hand the bottle and try with the free one to draw up the liquids, usually you draw more that is needed and its hard to quantify how much is or you end a little bit short and then pull a little more and now you are over, etc... I decided that it was time to retire half of the little syringes and get a variable volume pipette, I'm really satisfied and happy with the performance and accuracy level of the Four E's pipette (1-10ml version).While it's kind of on the big side compared to what I was using before its super light weight and fits really nice on my hand so now I just need one thumb to press to withdraw and press to release!No more guessing, adjusting the volume of liquid withdraw is super easy, slowly turn the push button to adjust the volume based on the reading on the display and once is set you are good to go, to be sure how accurate is the pipette I draw up 5ml of water and filled a graded syringe to compare... Boom! right on the 5ml line.Super simple to put and remove plastic tips simplify my whole set of tools, instead of one syringe to measure each solution used, now I just have a few plastic tips of the same size that can be cleaned and reused if is safe or discarded if needed. (A small mark made on the plastic with a oil based sharpie works as a good way to ID for what is each tip is used to avoid contamination and terrible mistakes).I will recommend this tool to anyone who need a fast and easy way to dispense solutions on a consistent way without breaking the bank!!

Seems calibrated correctly and works for now, will see how long it holds on at this price point.

Completamente accesible de precio. No se cuánto va a durar, pero vale la pena experimentar.