Borosilicate Glass Erlenmeyer Flasks, Set of 5

Heathrow Scientific® Lead Rings

Heathrow Scientific® Lead Rings are designed to stabilize glassware and lab vessels securely on the benchtop or in water baths. These vinyl-coated lead rings offer a flexible and protective solution for preventing tipping or movement of flasks, beakers, and cylinders during procedures.

The durable vinyl coating protects both your labware and benchtop from scratches, marks, or damage, while the C-shape design option allows for slight manual adjustment to accommodate a range of vessel sizes.

Ideal for labs using water baths or uneven surfaces, these stabilizing rings improve safety and efficiency during experiments. Sold in vibrant blue, they offer easy visibility in busy workspaces.

Key Features

• Stabilizes labware on benchtops or in water baths
• Vinyl-coated lead won’t scratch glassware or lab surfaces
• Ideal for use with flasks, beakers, and graduated cylinders
• Durable, reusable, and easy to clean
• Color: Blue for visibility and organization 

Specifications
 

Item #	Ring Type	Fits Flask Sizes	Inside Diameter	Outside Diameter	Weight
HS8881A	C-Shaped	125 mL to 500 mL	1.9 In. | 4.8 cm	3.0 In. | 7.6 cm	215 g | 0.47 lbs
HS8881B	C-Shaped	250 mL to 1000 mL	2.0 In. | 5.1 cm	3.5 In. | 8.9 cm	465 g | 1.03 lbs
HS8881C	C-Shaped	500 mL to 2000 mL	2.1 In. | 5.3 cm	3.9 In. | 9.9 cm	595 g | 1.31 lbs
HS8881D	C-Shaped	1000 mL to 4000 mL	2.6 In. | 6.6 cm	4.4 In. | 11.2 cm	890 g | 1.96 lbs
HS8882A	O-Shaped	125 mL to 500 mL	1.9 In. | 4.8 cm	3.0 In. | 7.6 cm	210 g | 0.46 lbs
HS8882B	O-Shaped	250 mL to 1000 mL	2.0 In. | 5.1 cm	3.5 In. | 8.9 cm	490 g | 1.08 lbs
HS8882C	O-Shaped	500 mL to 2000 mL	2.2 In. | 5.6 cm	3.9 In. | 9.9 cm	610 g | 1.34 lbs
HS8882D	O-Shaped	1000 mL to 4000 mL	2.8 In. | 7.0 cm	4.5 In. | 11.4 cm	935 g | 2.06 lbs

 

Non-Treated Suspension Cell Culture Flasks

• Non-treated Suspension Culture Versions
• Uniform hydrophilic surface ideal for consistent cell attachment
• Convenient zip-closure bag is a practical alternative to folding and taping open bags
• Large opening, canted neck design and moderate angles allow easy access to entire flask surface; ideal for cell scrapers
• Stable base enables filling with flask standing upright
• Thick, durable walls
• Flask is printed with lot number and expiration date for easy identification and tracking
• Molded, interlocking T design for improved stacking on 75, 182, & 300cm² and 250, 600 & 850mL size flasks
• Vent caps feature 0.22µm hydrophobic membrane
• 182cm² flask offers more growth area than standard 175cm ² flasks
• 182cm² Deep Volume Flask has extra depth, allowing more media volume; you can leave cell cultures to grow for longer without drying out or depleting all nutrients (maintain your cell cultures over the weekend)

Sterile 250mL polycarbonate flask without baffles. Virtually unbreakable Lexan (registered trademark of GE Plastics) polycarbonate is used in the manufacture of this product.

Flask comes sterile via gamma irradiation, packaged in its own protective bag with two polypropylene 38mm closures. One is a standard leakproof closure. The other is a vented closure with a PTFE membrane, 0.22um pore size for sterile air exchange.

The polycarbonate is autoclavable which makes for repeated reuse of the flasks. They are certified non pyrogenic and DNase/RNase free for convenience. Product fits all standard shaking incubator slamps and are ideal for culture, media preparation, storage and any related application.

Flasks-Erlenmeyer (PETG)

Solid Cap, Plain Bottom, PETG, Sterile

• Designed for mammalian suspension culture applications as well as bacterial & yeast culture
• Packaged sterile in individual bags for easy storage and handling
• Manufactured from medical grade virgin PETG which reduces gas permeability

Flasks-Large Erlenmeyer and Fernbach (Polycarbonate)

229850 | 229855 | 229860 | 229865 | 229870 | 229875

• Designed for mammalian suspension culture applications as well as bacterial and yeast culture
• Packaged sterile in individual bags for easy storage and handling
• 70 mm opening for easy filling and dispensing
• Over-sized vent area in cap for improved gas exchange
• Fernbach flask shape increases surface area to volume ratio
• Baffled bottom option improves mixing and aeration

NEST PETG Erlenmeyer Flasks

Glassware performance in a contamination-free, single-use shaker flask. Manufactured from medical-grade virgin PETG which reduces gas permeability.

Nest PETG Erlenmeyer Flasks are designed for mammalian suspension culture applications as well as bacterial & yeast culture.

Seal caps prevent contamination and evaporation. Ideal for long-term storage and transporting liquids. Vent caps with 0.22 um hydrophobic membrane allow gas exchange without contamination (an oversized vent area in the cap improves gas exchange). Ideal for cell culture, fermentation, air-sensitive reactions, and preventing bacterial growth.

• PETG
• Individually packaged in sterile bags
• Sterilized by E-Beam
• DNase/RNase free, no pyrogens   

NEST PC Conical Erlenmeyer Flasks

Glassware performance in a contamination-free, single-use shaker flask. Polycarbonate bottle meets the USP Class 6 Standard with high transparency, strong impact resistance and oxidation resistance, and can withstand temperatures up to 121ºC. There’s a scale made by injection molding on the flask body to facilitate volume observation.

Nest Polycarbonate Conical Erlenmeyer Flasks are designed for mammalian suspension culture applications as well as bacterial & yeast culture.

Seal caps prevent contamination and evaporation. Ideal for long-term storage and transporting liquids.

Vent caps with 0.22 um hydrophobic membrane allow gas exchange without contamination (an oversized vent area in the cap improves gas exchange). Ideal for cell culture, fermentation, air-sensitive reactions, and preventing bacterial growth.

• Polycarbonate
• DNase/RNase free, no pyrogens
• Sterilized by E-Beam
• Individually packaged in sterile bags   

Small Erlenmeyer Flask

VOLUMETRIC FLASKS, CLASS A, WITH SNAP CAP, BATCH CERTIFIED

• Durable, machine-blown body
• Heavy beaded tubing neck
• Feature a sharp graduation line and large white block letters
• Plastic snap cap is included
• Meets Class A specifications per ASTM E288

ERLENMEYER FLASKS, NARROW MOUTH, BOROSILICATE GLASS

• Designed to give the best combination of thermal shock resistance and physical strength
• Feature heavy-duty rims and graduations in durable white enamel

• Polypropylene (PP) or polycarbonate (PC)
• Autoclavable (flasks, caps, and filters)
• 0.22µm filters (silicone membrane or dri-gauze)
• Multi-colored caps
• 3 flask designs with different baffle options

TUNAIR flasks present an improved methodology for the growth of aerobic microorganisms as well as mammalian, insect, and plant cells. These flasks increase culture growth (up to 3X for yeast), and increase productivity over traditional Erlenmeyer flasks. The unique baffling and barrel-shape design increase the turbulence, with a corresponding increase in oxygen absorption. TUNAIR flasks are a unique, high-aeration, reusable cell growth system which increase the availability of dissolved oxygen and improve cell yields. Available in either 300ml or 2.5L sizes.

Baffle options:

No baffle, NO-BAF (normal throw)

2 baffles, HAF-BAF (vortex motion)

3 baffles, FUL-BAF (propeller motion)