Koncocoo

Best Lab Flasks

Glass Erlenmeyer Flask Set - 3 Sizes - 50, 150 and 250ml, Karter Scientific 214U2
Karter Scientific® is a registered trademark in United States of America.
Reviews
"It would be nice if they had rubber stoppers or tops."
"Used this to put rock candy inside to use for "blue meth" from Breaking Bad."
"Everything was perfect for my granddaughters MC2 Birthday Party."
"This is a three piece set, great quality, exactly as pictured."
"Smaller than I expected but that makes them cuter."
"Great Science Party Accessory!"
"The 250 mL flask arrived with a big chip out of the lip, I could not find the broken piece, leading me to believe that it was packaged broken, there is also a big crack in the side of it."
"broke quickly after couple of days of use."
Find Best Price at Amazon
PYREX 2L Narrow Mouth Erlenmeyer Flasks with Heavy Duty Rim, 1/pk
Texas Residents: Under Texas State Law, this product requires a Precursor Chemical/Laboratory Apparatus NAR-120 permit to ship to a Texas address.
Reviews
"I felt bad using our lab glassware for my starters so I decided to purchase my own Erlenmeyer flask."
"It has a nice, flat bottom that works perfectly with my stir plate, and the Scienceware 2" Stir bar Scienceware 371100002 PTFE Octagon Spinbar Magnetic Stirrer Bar, with Integral Pivot Ring, White, 2" Length, 5/16" Diameter ."
"Steven from Scientific Equipment of Houston was very courteous on the phone and offered to send me the correct item free. The flask itself can be taken from a red hot stove coil to a cold water bath, though I usually let it sit for a few minutes before doing so."
"I'd recently gotten a stirplate and it seemed to be struggling with the 1 liter flask I had."
"Construction looks flawless, no chips, no air bubbles in glass, relatively flat bottom meaning my stirbar makes minimal noise."
"The flask will hold 2,000 ml but the final 200 ml graduation is not marked. To me, a #9.5 stopper actually fits better."
"The real deal."
"Does what it is supposed to as a 2L flask!"
Find Best Price at Amazon
PYREX 1L Narrow Mouth Erlenmeyer Flasks with Heavy Duty Rim, Ea
These 1L PYREX Erlenmeyer flasks are designed with heavy duty rims to reduce chipping.
Reviews
"This flask is well made and the perfect size for yeast starters for beer brewing."
"I bought it to replace a similar flask that cracked when it fell on its side on the kitchen counter (it didn't even fall that hard...so I was really disappointed)."
"Perfect for bringing a yeast colony to life."
"This is just the right size for making a yeast starter for my 5 gallon batches of home brew,plus it is a real Pyrex Made in Germany!"
"So this is the second one of these I’ve bought for home brewing from this company."
"This Pyrex flask is perfect for my needs, it is good quality and I expect to be using it for a long time."
"Got this to use for starting yeast for home brewing."
"I was Bill Nye for Halloween."
Find Best Price at Amazon

Best Lab Boiling Flasks

Corning Pyrex Borosilicate Glass Flat Bottom Boiling Flask, 250mL Capacity
7740 Pyrex brand clear borosilicate glass for durability and chemical- and temperature-resistance, and its uniform wall thickness provides mechanical strength for shock-resistance. 7740). Capacity. 250mL. Stopper size. #5. Top style. Tooled mouth. Working temperature. 230 degrees C. Dimensions. 134mm height, 82mm OD. Flasks are glass or plastic containers for storing or collecting chemical samples or solutions in scientific laboratories.
Reviews
"Exactly as pictured... Nice and thick, especially around the top."
"I enjoy making my on essential oils using steam distillation."
"Very thick glass, well made."
"i use this as a vase and love it."
"I bought a petri dish to use as a soap dish, along with this flat bottom flask for a toothbrush holder, and beaker for a glass."
"Exactly as pictured."
Find Best Price at Amazon

Best Lab Cell Culture Flasks

Kimble Glass Baffled Culture Flasks, 250ml Capacity (Case of 6)
Capacity: 250 milliliters |. Item Shape: Conical |. Number of Items: 6 |. Part Number: 25630-250.
Find Best Price at Amazon

Best Lab Dewar Flasks

U.S.SOLID 10L Cryogenic Container Liquid Nitrogen LN2 Tank Dewar with Straps 6 Canisters
Any skin contact with liquid nitrogen will result in cold burns. A dewar tank is a double-walled flask of metal or silvered glass with a vacuum between the walls, used to hold liquids at well below room temperature.
Reviews
"Good quality and nice cover."
"works very, very well."
"Very good container with low loss."
"The styrofoam insert which helps insulate the top of the bottle seems to work well."
"Very slow dissipation of liquid nitrogen, especially with Styrofoam insert under the lid."
"Worked well for us and lasted about 60 days."
"Using the provided canisters was not easy to use as the container mouth is narrow."
Find Best Price at Amazon

Best Lab Distillation Flasks

SEOH Retort Borosilicate Glass 1000 ml Distillation Hex Stopper
Texas Residents: Under Texas State Law, this product requires a Precursor Chemical/Laboratory Apparatus NAR-120 permit to ship to a Texas address.
Reviews
"1st one arrived broken in shipment, immediate replacement sent upon notification to SEOH."
"retorts can have a number of different features that can make them better suited than others, what I like about this one is that it is made of high quality glass, which can take the heat."
Find Best Price at Amazon

Best Lab Erlenmeyer Flasks

Glass Erlenmeyer Flask Set - 3 Sizes - 50, 150 and 250ml, Karter Scientific 214U2
Karter Scientific® is a registered trademark in United States of America.
Reviews
"It would be nice if they had rubber stoppers or tops."
"Used this to put rock candy inside to use for "blue meth" from Breaking Bad."
"Everything was perfect for my granddaughters MC2 Birthday Party."
"This is a three piece set, great quality, exactly as pictured."
"Smaller than I expected but that makes them cuter."
"Great Science Party Accessory!"
"The 250 mL flask arrived with a big chip out of the lip, I could not find the broken piece, leading me to believe that it was packaged broken, there is also a big crack in the side of it."
"broke quickly after couple of days of use."
Find Best Price at Amazon

Best Lab Filtering Flasks

American Educational Clear Borosilicate Glass 1000mL Bomex Filtering Flask
The Bomex filtering flasks have a narrow mouth, tooled top finish and made of clear borosilicate glass.
Reviews
"The glass doesn't appear to have any bubbles or other imperfections that would compromise the integrity of the glass while under vacuum."
"Awesome for the price."
"Delivered as expected."
"great extra heavy wall dist flask nice."
"In one section it says they take #6 stoppers, standard 1000mL side-arm flasks from other manufacturers take #8 stoppers (what I bought), and another place in the description says #10 stoppers."
"Very nice quality."
"Nice flask at a great price."
"Safely packaged, works as expected."
Find Best Price at Amazon

Best Lab Freeze Dry Flasks

Labconco Fast Freeze 7540800 Borosilicate Glass Wide Mouth Flat Bottom Complete Flask, 600ml Capacity
A complete Fast-Freeze Flask consists a rubber top, glass bottom and a supply of filter paper.
Find Best Price at Amazon

Best Lab Kjeldahl Flasks

Corning Pyrex Borosilicate Glass Round Bottom Kjeldahl Flask with Long Neck, 200ml Capacity (Case of 24)
These 300mL PYREX Kjeldahl flasks have tooled finished necks for extra strength and uniform rubber stopper (No.
Find Best Price at Amazon

Best Lab Reaction Kettle Flasks

Pyrex 6947-4L Borosilicate Glass Cylindrical Resin Reaction Kettles Flask with Covers, Four-Neck Standard Taper Joints (3x 24/40 and 1x 34/45), 4000ml Capacity (Case of 1)
These 4000mL PYREX kettles have covers with four openings to accommodate 24/40 Standard Taper joints.
Find Best Price at Amazon

Best Lab Recovery Flasks

Chemglass CG-1512-X-13 Series CG-1512-X Heavy Wall Wide Mouth Recovery Flask, Single Neck, GL80 Glass Thread, 24/40 Connecting Adapter, 3000 mL Capacity
PTFE adapter has FDA grade silicone gasket behind a PTFE envelope type seal so that liquid or powders are only exposed to glass or PTFE.
Find Best Price at Amazon

Best Lab Spinner Flasks

Corning 4502-6L Borosilicate Glass 6L Proculture Spinner Flask, with 120mm Flat Center Cap and 2 Angled Sidearms
The patented 'stretch' impeller design ensures optimal stirring, and the side baffles enhance aeration and agitation of the flask contents. The sidearm design permits easy access of 25 and 50mL pipets. The vessel is made of borosilicate glass and the caps of polypropylene, with a polysulfone shaft with a Vortex Impeller paddle assembly. It has consistent height to width ratios for greater predictability.
Find Best Price at Amazon

Best Lab Volumetric Flasks

213W12 Karter Scientific 1000ml Volumetric Flask w/ Ground Stopper
Karter Scientific® is a registered trademark in United States of America.
Reviews
"Yeah, I keep booze in these, so if you're looking for a review about lab suitability, keep scrolling."
"Bought for a kids birthday party, not bad for the price but don't expect high quality."
"Sturdy and came well packed!"
"This had some strange sticky Brown stuff all over it."
"Exactly what my wife wanted to water her plans."
"Came a bit scratched up but other than that it's just as advertised."
"I will be using for chemistry storage so heat capability is not an issue."
"I've been using it with a 1" Teflon stirbar (round) on a non-heated stir plate and have found chips/cracks in the bottom of the flask after 4-5 uses (less then 4 months old)."
Find Best Price at Amazon