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The 8 Best science lab filtering flasks of 2024

Are you trying to find science lab filtering flasks among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling science lab filtering flasks on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 11 hours of research and did 22 science lab filtering flasks tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best science lab filtering flasks you can buy today

SaleNo. 1
EISCO Filtering Flask, 5000mL - Heavy Walled Borosilicate Glass & Integral Barbed Side Arm/Inlet for Vacuum Filtration - White Graduations - Buchner, Erlenmeyer, 5L Filter Flask
  • INDUSTRIAL STRENGTH || Made of high quality, heavy duty, borosilicate 3.3 glass. Excellent strength against breakage. Designed for use in professional laboratories, but is ideal for classroom, garage and home use
  • 5000ML CAPACITY || Flask has a 5000mL capacity and features white printed graduation lines every 500mL. Inner diameter at opening measures 52mm; use #11 stopper (not included)
  • INTEGRAL SIDE ARM || Flask is equipped with an integral barbed side arm for attaching vacuum tubing
  • HEAVY WALLED || Heavy borosilicate glass walls are ideal for withstanding pressure under a vacuum
  • STIR BAR COMPATIBLE || Features a perfectly flat inside bottom for mixing with a rotating stir bar
No. 2
Glass Erlenmeyer Flask Set 50ml 150ml and 250ml, Narrow Mouth Graduated Flasks, 3.3 Borosilicate Glass, Ideal for Laboratory, Classroom or Home Use, HUAOU
  • Package contains: 1 each 50ml 150ml and 250ml glass conical flask.
  • Size (Diameter X Height): 50ml: 5.1cm(2.01in) x 8.5cm(3.35in); 150ml: 6.9cm(2.72in) x 12.2cm(4.8in); 250ml: 8.5cm(3.35in)X14.5cm(5.7in).
  • Material: these flasks of great quality are made of 3.3 Borosilicate glass, with high chemical durability and low thermal expansion, which can withstand the high temperature and thermal shocks. Microwavable and autoclavable.
  • Features: heavy duty rim, smooth surface, wide stable base, fadeless white graduation.
  • Uses: can be used for professional scientific experiments and classroom labs, also suitable for candy storage, plant propagation, home decoration and party supplies for such as Christmas, Halloween, kids birthday, wedding, science themed party. Three different sizes to meet different needs, convenient to use.
No. 3
Filtering Flask, 1000ml - Borosilicate Glass - Conical Shape, with Integral Side Arm - White Graduations - Eisco Labs
  • 1000ml conical filtering flask made from Borosilicate Glass
  • Integral Side Arm measures 14.2mm long with an inner diameter of 4.6mm and an outer diameter of 8.5mm
  • For use in storing, mixing, and transferring various solutions
  • Side arm provides easy connection to tubing
  • Designed for use in professional laboratories, but is an ideal choice for science classrooms and household use
No. 4
United Scientific FG5340-500 Borosilicate Glass Heavy Wall Filtering Flask, Bolt Neck with Tubulation, 500ml Capacity
  • Made of high quality borosilicate glass
  • Graduations printed in durable white enamel
  • Temperature range: -50°C (-58°F) up to 500°C (932°F)
  • Dimensions: 108mm Dia. x 190mm Hgt.
  • Tubing size: 3/8"
No. 5
United Scientific™ FG5340-1000 Laboratory Grade Borosilicate Glass Heavy Wall Filtering Flask, Bolt Neck with Tubulation, 1000ml (1 Liter) Capacity
  • Capacity: 1000mL (1L), Tubing size: 3/8"
  • Graduation Range: 400-1000mL, Graduation Intervals: 50mL
  • Made from industrial quality Borosilicate 3.3 glass, these flasks are built to withstand high temperatures and thermal shock.
  • These flasks feature dual scale graduations per ASTM-E960 standards.
  • All United Scientific flasks are dishwasher safe.
  • Every United Scientific flask is manufactured using state of the art equipment. Every product undergoes various rounds of quality control, and is designed to ensure a smooth, consistent experience for our customers.
  • Dimensions: 138mm Dia. x 245mm Hgt.
No. 6
Buchner Filtering Flask, 1000ml - Polypropylene - with Angled Side Arm - Eisco Labs
  • Buchner filtering flask made of high quality polypropylene. Eisco Labs proudly manufactures its own products, using only the highest grade, raw materials to ensure that they can withstand use in even the toughest laboratory environments
  • 1000ml capacity
  • Conical shape for spill prevention. Beaded rim
  • Angled side arm
  • Designed for use in professional laboratories, but is an ideal choice for science classrooms and household use
No. 7
Glass Filtering Flask with Upper Tubulation, 2000ml
  • 2000ml Glass Filtering Flask with Upper Tubulation.
  • High quality borosilicate 3.3 glass.
  • Approx Height=285mm.
  • Individually wrapped. Pack of 1.
  • The inner diameter of the tubulature is about 0.60cm, the outer diameter of the end is about 1.30cm; the length is about 4.80cm.
No. 8
Buchner Filtering Flask, 500ml - Socket Size 24/29 - Interchangeable Joint - Side Arm - Borosilicate Glass - Eisco Labs
  • Made of high quality, heavy duty Borosilicate glass
  • 500ml capacity
  • Top and side joints 24/29 size socket
  • Stands 6.5" tall. Base measures 4.25" in diameter. Side socket arm measures 1" long
  • Perfect for any science or home laboratory
No. 9
500ml Filtering Flask, Bolt Neck with Tubulation, 3.3 Borosilicate, Heavy Wall, Karter Scientific (Single)
  • Capacity: 500ml
  • Graduations:
  • Height: 178mm / 7in (approx.)
  • O.D.: 102mm / 4in (approx.)
  • Heavy Duty, 3.3 Borosilicate Glass
No. 10
9 Pack Glass Erlenmeyer Flask Set with Glass Stirring Rod, 7 Sizes, 50ml, 100ml, 150ml, 200ml, 250ml, 300ml, 500ml, Borosilicate Glass Erlenmeyer Flasks with Printed Graduation for Lab Chemistry
  • Package Includes: you will get 7 glass erlenmeyer flasks and 2 glass stirring rods, the erlenmeyer flasks have 7 different capacity, 50ml, 100ml, 150ml, 200ml, 250ml, 300ml, 500ml, easy to measure and use different volumes of liquid, the stirring rod can also make better convenience for experiments
  • Quality Material: the lab erlenmeyer flasks are well designed with quality borosilicate glass with uniform wall thickness, they are heavy duty, reusable and not easy to break
  • Good Heat and Chemical Resistance: the erlenmeyer flask set can withstand high temperature, and they can be heated on a hot plate, flame, oven, microwave or heating mantle, nice chemical durability and heat resistance ensure you can experiment without risk of damage
  • Clear Scale: each erlenmeyer flask has clear and accurate scales on the sides, allowing you to measure and store data more efficiently
  • Laboratory and Chemistry Glassware: the erlenmeyer flasks with rods are suitable for a variety of occasions, including scientific experiments and liquid measurements in professional laboratories, schools and homes; The fine workmanship and safe materials will make chemistry and science experiments easy and successful
No. 11
Buchner Filtering Flask, 100ml - Socket Size 19/26 - Interchangeable Joint - Side Arm - Borosilicate Glass - Eisco Labs
  • Made of high quality, heavy duty Borosilicate glass
  • 100ml capacity
  • Top and side joints 19/26 size socket
  • Stands 4" tall. Base measures 2.5" in diameter. Side socket arm measures 0.75" long
  • Perfect for any science or home laboratory
No. 12
PYREX Heavy Wall Filtering Flasks with Sidearm Tubulation - Borosilicate Glass Flask – Premium Glass Chemistry Flask for Laboratory, Classroom or Home Use - PYREX Chemistry Glassware, 250mL, 2/Pk
  • LABORATORY FLASK: This heavy wall borosilicate glass flask with sidearm tubulation is ideal chemistry glassware for use in laboratories, schools, and for home and STEM experiments.
  • SAFE & DURABLE: Offering superior heat, chemical and thermal shock resistance, the flat bottom lab glassware with robust rim delivers premium strength and will not shatter easily.
  • CLEAR CAPACITY MARKINGS: A graduated metric scale in white makes it easy to measure liquids and approximate contents, and the lab glass flask has a large labelling area.
  • EASY TO CLEAN: The reusable glass scientific flasks are easy to clean and can be sterilized safely in autoclaves at 121°C, making them ideal for repeated use in busy lab environments.
  • PYREX GLASSWARE: PYREX scientific glassware has been a trusted partner for chemists and research scientists in the toughest laboratory environments for more than 100 years.
No. 13
QWORK Borosilicate Glass 500ml Buchner Filtering Funnel and 1000 mL Erlenmeyer Flask, with Standard 24/40 Joint
  • Durable Material: Made of borosilicate glass, high quality material and perfect craftsmanship, high and low temperature resistance, chemical resistance.
  • Capacity: 500ml and1000ml, making it an ideal choice for storing large amounts of liquid.
  • Connection: Erlenmeyer flask with 24/40 standard conical male connector.
  • Thick: The Borosilicate glass flask is made to ensure walls are thin, uniform and easy to work with. The flask is handmade with a process that ensures the walls are thick and free from air bubbles.
  • 100% Satisfied Service: Enjoy a smooth & frustration free experience with our 100% Satisfied Service in one Month!
No. 14
Young4us Glass Erlenmeyer Flask Set, (250 ml, 150 ml & 50 ml) Graduated Borosilicate Glass Erlenmeyer Flasks with Rubber Stoppers & Accurate Scales for Lab, Experiment, Chemistry, Science Studies etc
  • 3 RUBBER STOPPERS INCLUDED: This set has 3 rubber stoppers for these 3 Erlenmeyer Flasks, which are sterile & can seal the liquid in the flasks perfectly for experiment.
  • ACCURATE SCALES: 3 Erlenmeyer Flasks in different sizes (250ml 150ml 50ml) have clear and accurate scales for you to measure liquid efficiently & accurately without any problem.
  • SIGNIFICANT FEATURES: Reusable, environmental friendly, will not shatter easily, easy to clean, high temperature resistance, for laboratory, chemistry, science experiment, liquid measuring, etc.
  • HIGH-END MATERIAL FOR LAB: These Borosilicate Glass Erlenmeyer Flasks have High chemical durability and low thermal expansion, which can withstand the temperature under 800 °C (~1500 °F).
  • PACKAGE & WORRY-FREE: Each set has 3 Erlenmeyer Flasks & 3 Rubber Stoppers. If you received defective items, please contact us via email for full refund or replacement. We would try our best to fix issues.
No. 15
Glass Narrow Mouth Erlenmeyer Flask Set (FGSET3) - 3 Sizes - 50, 150 and 250ml, United Scientific
  • Contains 1 each 50, 150 and 250ml Narrow Mouth Erlemeyer Flask
  • High quality inert 3.3 borosilicate glass
  • Heavy Duty Reusable
No. 16
Buchner Filtering Flask, 250ml - Socket Size 24/29 - Interchangeable Joint - Side Arm - Borosilicate Glass - Eisco Labs
  • Made of high quality, heavy duty Borosilicate glass
  • 250ml capacity
  • 24/29 size socket
  • Stands 5" tall. Base measures 3.5" in diameter. Side arm measures 0.9" long
  • Perfect for any science or home laboratory
No. 17
SPL Cell Culture Flask 75 cm2 (T75) Filter Cap, Treated, Sterile, 100/Case
  • Ergonomic design to facilitate easy handling
  • Short & wide neck with angled design allow easy access
  • Excellent stackability
  • Non - pyrogenic, Non - cytotoxic, DNase / RNase - free, Human DNA - free
SaleNo. 18
StonyLab Glass 250ml Heavy Wall Borosilicate Glass Filtering Flask, Bolt Neck with Tubulation, 250ml
  • Used for pressure filtration; or to increase flow rate when some concentrated solutions are slow or difficult to filter under normal pressure
  • Made of borosilicate glass; capacity: 250 milliliters
  • Flasks have a narrow mouth and tooled top finish
  • Special notice: As this item is handmade, please allow an error range of 2~3mm
  • StonyLab ensures high quality products and premium customer service; if received damaged, please contact us immediately; we will solve it until satisfied
No. 19
Glass Filtering Flask with Upper Tubulation, 1000ml
  • 1000ml Glass Filtering Flask with Upper Tubulation.
  • High quality borosilicate 3.3 glass.
  • Approx. Height=22 cm. O.D of base = 13 cm. I.D of mouth = 3.4 cm.
  • Individually wrapped.
  • Pack of 1
No. 20
SPL Cell Culture Flask 25 cm² (T25) Filter Cap, Treated, Sterile, 200/Case
  • Ergonomic design to facilitate easy handling
  • Short & wide neck with angled design allow easy access
  • Excellent stackability
  • Non – pyrogenic, Non – cytotoxic, DNase / RNase – free, Human DNA – free

How to choose a good science lab filtering flasks

Does the idea of finding a fantastic science lab filtering flasks make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in science lab filtering flasks. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top science lab filtering flasks products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top science lab filtering flasks on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top science lab filtering flasks brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top science lab filtering flasks based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the science lab filtering flasks were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good science lab filtering flasks, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your science lab filtering flasks.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting science lab filtering flasks for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our science lab filtering flasks. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what science lab filtering flasks should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on science lab filtering flasks.