EISCO Burette with PTFE Key Stopcock, 10ml - Class A - 0.05ml Sub Div. Blue Graduations - ±0.03ml Tolerance - Borosilicate Glass

Received the burette in excellent condition, item has a well designed protective box. This is an class A tolerance burette.

Worked well for my wine-related titrations. I am an engineer, not a chemist.

Works well for soy based chemisty work

The picture for this product shows very distinct and readable graduations. The product I received has very very faint graduations that are extremely difficult for me to read. I'm going to have to replace this puppy with something I can read. What a waste.

I bought 2 of these burettes, a 10mL and a 25mL from this company. Fast shipping and arrived very well packed and in perfect condition. The burettes are well made and look great with the blue graduation line marking scheme.Here lies the problem. The blue graduation markings are some type of paint/coating on the exterior of the burette, with a rough texture to them and the lines themselves are a bit thick. Not by much but not like the thin engraved lines on my 50mL Pyrex burette. Of course these 2 burettes didn't cost $90.00 either.I'm a little concerned about eventual wearing of the markings through repeated cleanings and/or something harsher like acid cleaning if the need arises, which, with proper care, should not be necessary, but you never know.I'll have to wait and see how they hold up.

I double and triple checked the accuracy. It seems to be fairly accurate and works well. The only complaint is that the stopcock is pretty sensitive. Once you get it dripping, less than a millimeter is the difference between a slow drip and full blast. To be honest though, that in no way affects the science you can do with it. You just have to be more careful with it.