Weewooday Glass Droppers Pipettes Graduated Lab Dropper Glass Liquid Pipette with Big Rubber Hats 20 cm Stir Rod Washing Brush Transfer for Liquid Essential Oil(16 Pieces,Blue,10 ml)

I was looking for a better way to get an accurate 10 ml water sample for my daily pool chlorine check because I found it difficult and too subjective with the graduated cylinder that came with my TFT Pro pool test kit.This works and is very accurate "but" you have to adjust the water meniscus twice - once at the top 10 ml mark when collecting the water sample and again at the bottom of the scale which is zero when discharging the water into the testing cylinder.There will be about 1 ml of water left in the tube so "DO NOT" squeeze the bulb and discharge all the water into your sample.I had no trouble installing the bulb on the tube and squeezing it to get the suction to draw the water into the tube was easy.I am not sure this will save me any time but it eliminates the uncertainty I previously felt when using the graduated cylinder alone.I am happy with my purchase.

Great price for set of droppers and pipettes. Good for taller bottles once the volume level has dropped, can still reach the liquid when shorter eye droppers couldn’t.

Perfect glass dropper I only needed one but good to have spares and the cleaning brushes that came with them I use for testing 5ml of fish tank water.

Work well, strong and robust. The graduations do not come off with mineral spirits or acetone. Best of all, the bulbs are actually large enough to suck up 10 mL of fluid. That said, the packaging is terrible and I am shocked that nothing was broken.

Perfect for my need to add distilled water to a flooded car battery. Actually this one is on my standby generator, but same thing.

If you need to be precise with the ml (or ounces) dosing for liquids - then these will come in HANDY! I have used these to precisely measure out 12ml of liquid (vs. the 20+ that would accidentally come out (and spill due to the backflow)).The glass stirrers are useful for stirring liquid while being easy to keep clean (rather it is oily or non-oily). The brushes are nice, though they don't go all the way to the tip (which can be tricky to clean regardless)).The size of the droppers did take me back a bit. I wasn't sure what to expect for a dropper sized to extract up to 10ml of liquid at a time - but these are definitely not small and petite (despite how they appear in the picture).

I didn't realize how big these droppers are, so it's my mistake. I have not used them since they are so big, but they seem to be made with pretty good quality.

These are great. they are a little bigger than I needed, but they are sturdy and have a graduated scale along the side so you know how much you are applying. I love that they are glass, and won't add unnecessary plastic to the environment when I'm dead and gone. They came with two brushes for easy cleaning. A solid, useful product.