Utile Plastic Erlenmeyer Flask Set with Screw Caps, 6pcs of Vol.500ml Scientific Conical Flask Laboratory Flask, with Molded Graduations, 4023.0671.6

Polypropylene and food grade plastic. Great combination. I've use PP labware for decades and it's great after breaking so many glass flasks.These would be great for experimentation in the kitchen with various spices and sauces. You can temporarily store the concoction in the refrigerator.The volume graduations are fairly close, so they can be used.

The flacks are "food grade", so it is safe to make and/or store homemade condiments, also great for liquids or powders (like vinegar, citric acid, baking soda, etc). Each flask has engraved volume marks, so it comes very handy when making your own meat/fish marinades, salad dressings, etc. The caps on flasks close tightly.The downside is that the measurement marks starts at 200 ml, so if you need to pour just 50 or 100 ml of something, you would still need a measuring cup. After the 200 ml mark, the increment is by 50 ml. After the 400 ml increment, the measurement lines come in by 25 ml until the 500 ml mark on the flask is reached.

This is a great heavy duty flask and is exactly as the Product Page described. It seems to be made of High Quality Materials and has been working great for me. I'm happy with it and do recommend it.

I needed some lab style Erlenmeyer flasks for some distills and storage of things I want to use for later reactions etc.. I love the screw caps and the quality of these work great so far! I am not doing anything insane, so I can't attest to pushing their limits

I had my students test these for the volume by measuring the weight of water in them (1 gram per ml). The volume measurements on the 500ml are not accurate, they have an error of about 5 percent. So if you plan on using them for this, get glass ones.They seal tight and are great for mixing stuff. You can see through them fairly well. Impressed with the lids.

Flask set6 totalPlastic designScrew on cap125 mlNoting much to say except these are as you'd expect

So we have a mini-scientist in the family who loves to pretend she's doing experiments. The Utile Plastic Erlenmeyer flasks were a hit with her. While I can't attest to them being lab grade (not my area of expertise) and they come unpackaged in some plastic wrap not professionally done, they look and feel like legit erlenmeyer flasks one would use in high school science or a lab. These look and feel like like flasks one would use for real experiments, not some cheap plasticky knock off.

These are solid, 1-L (1,000-mL), graduated polypropylene (PP) Erlenmeyer flasks with screw-on tops. The flask actually holds more than 1,000 mL but the maximum indicated volume is “1000 ML”. Being translucent, the liquid level of even clear water is evident. The diameter of the opening on the flask is about 1.2 inches (30 mm). The graduated scale on the flask states “APPROXIMATE VOLUME” and it is indeed “approximate”. If 1 L of room temperature water is poured into the flask, the water level is noticeably above the “1000 ML” mark. I emptied the flask, refilled it to the 1000-mL mark on the flask, then poured this water into a graduated 1-L beaker with accurate markings. The actual amount of water in the flask at “1000 ML” is about 975 mL (photo); therefore, if volume is important, I would suggest using a more accurate graduated cylinder, beaker, or flask. Given that I plan on calibrating my dissolved oxygen (DO) sensors in water saturated air, the accuracy of the scale is not important, and the dimensions of the Erlenmeyer flask are ideal because of the large surface area of the water at the 400-mL mark in the flask which is also well below the DO sensor’s surface (so it is in water saturated air but not in the water).PROS• Solidly built polypropylene Erlenmeyer flask with a screw top.• Translucent so even clear, colorless liquid (e.g., distilled water) levels are clearly visible.CONS• Graduations are truly “approximate” at least in my test where room temperature water in the flask at the “1000 ML” level was actually 975 mL.