HS20632A

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.

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

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.

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.

Gomma troppo rigida

Calidad precio bueno

Praktischer und zuverlässiger Pipettierball – ideal für präzises Arbeiten! Der Heathrow Scientific HD20632C Pipettierball hat meine Erwartungen voll erfüllt. Die ergonomische Form liegt gut in der Hand, und die drei Ventile ermöglichen eine präzise Steuerung des Flüssigkeitsflusses – ideal für genaue Pipettierarbeiten. Besonders hervorzuheben ist die chemikalienbeständige Gummimischung, die eine lange Haltbarkeit verspricht. Der Pipettierball passt problemlos auf Standard-Pipetten und erleichtert das Arbeiten erheblich. Für alle, die Wert auf Qualität und Funktionalität legen, ist dieser Pipettierball eine klare Empfehlung!

rien a reprocher

purtroppo era guasto e l ho restituito