Heathrow Scientific HD20632A Pipette Filler, 54mm Length x 54mm Width x 130mm Height, Rubber, Black

Works as described.

I use this with a 10mL pipette. I originally got it for use with yeast culturing for my homebrewing where I need to measure out 10ml of wort into test tubes and also found that it is a handy way to get pool water from well below the surface when I measure chlorine without getting my arm wet up to the elbow. This bulb seems to work OK. The BB's inside tend to move around a lot and make their way out of the valve and out or into the bulb, so you need to be careful how you squeeze the valves. Once I figured that out, it seems to work OK.I am not sure how long this part will last. When I received it the rubber seemed slightly cracked on the surface and discolored. Maybe it had some sort of varnish on it. Anyway, it hasn't had any problem with cracking or leaking.

Attachment security in any laboratory. Good quality, maintained without losing suction. Excellent finish. You can shop with confidence. Protect yourself and any worker is to handle hazardous substances.

First try it slowly drained with no control. For years I used these with no problems. Would not buy again.

Worked great so far. Long enough for the price for sure.

Bought several of these. They did not work at all. A complete waste of money and time.

Calidad precio bueno

Érase una vez un cliente que usó esta pera, aquella pera no era exactamente igual a la de la foto, más bien blanquecina, como con manchas de talco, mas no le importó, pues aquel cliente pensó: "con que funcione será suficiente".Pero ¡ay! dulce inocencia, tres usos bastaron, y la válvula de desagüe dejó de funcionar. Insistió con ella, la trató de arreglar, mas aquel artilugio del demonio no quiso volver a operar.Cuan rabiosa fue su reacción, cuan decepcionado se sintió aquel cliente. Tal fue su desagrado que, por primera vez en su vida, decidió dejar su reseña en Amazon.Cuantos este mensaje vieren: huyan, huyan lejos y no miren atrás.

Dans mes attentes

Gomma troppo rigida

Gut