Heathrow Scientific® Sibata Amber Volumetric Flasks with Stopper

• Color: Amber
• Material: Borosilicate Glass

These volumetric flasks are constructed of low-actinic amber glass, providing protection for materials that are sensitive to light. Each flask features machine-blown bodies and heavy-beaded, heavy-tubing necks that are tooled for standard taper glass stoppers. Each volumetric flask is supplied with a standard taper glass stopper, which provides a leakproof seal. This airtight seal not only preserves the integrity of your samples but also enhances the reliability of your volumetric measurements.

Mian Attributes

• Low-actinic amber for light-sensitive materials
• Made of premium borosilicate glass with a low coefficient of expansion
• Designed “to contain” with a temperature of calibration at 68°F (20°C)
• The graduation line is sharply defined and of uniform width
• Each flask has a large marking square and includes a glass stopper
• Wide range of sizes available (10 mL to 1000 mL)
• Meets ASTM E-288 Class A specifications & USP standards for glassware   

Heathrow Scientific® Sibata Volumetric Flasks with Snap Cap

• Material: Borosilicate Glass 

Heathrow Scientific® Sibata Volumetric Flasks with Snap Cap are designed for precise volume measurement and dependable laboratory performance. These high-quality volumetric flasks feature machine-blown bodies and heavybeaded, heavy-tubing necks tooled specifically for a secure snapcap fit.

Constructed from premium borosilicate glass, these flasks offer exceptional clarity, superior chemical resistance, and a low coefficient of thermal expansion for consistent and accurate results. Each volumetric flask is supplied with a durable snap cap that helps protect against spills, contamination, and accidental breakage during handling and storage.

Designed to contain (TC) and calibrated at 68°F (20°C), the sharply defined, uniform graduation line ensures accurate volume determination. A large marking square allows for easy labeling, while a wide range of available sizes, from 10 mL to 1000 mL, provides flexibility for analytical, research, and qualitycontrol laboratory applications. These flasks meet ASTM E288 Class A specifications and USP standards, ensuring reliable, high-precision volumetric performance.

Main Attributes

• Made of premium borosilicate glass with a low coefficient of expansion
• Designed to contain (TC); calibrated at 68°F (20°C)
• Sharply defined, uniform graduation line for accurate readings
• Large marking square for clear sample identification
• Includes a secure snap cap to help protect against spills and breakage
• Wide range of sizes available (10 mL to 1000 mL)
• Meets ASTM E288 Class A specifications and USP standards for glassware   

Volumetric Flasks with ST Stopper, Class A, Batch Certified

• Durable, machine blown body
• Heavy beaded tubing neck
• Feature a sharp graduation line and large white block letters
• Ground glass stopper included
• Meets Class A specifications per ASTM E288

 Specifications
 

Item #	Capacity	Tolerance	Stopper Size
FG5640-5	5 mL	± 0.02 mL	9
FG5640-10	10 mL	± 0.02 mL	9
FG5640-20	20 mL	± 0.03 mL	9
FG5640-25	25 mL	± 0.03 mL	9
FG5640-50	50 mL	± 0.05 mL	9
FG5640-100	100 mL	± 0.08 mL	13
FG5640-200	200 mL	± 0.1 mL	16
FG5640-250	250 mL	± 0.12 mL	16
FG5640-500	500 mL	± 0.2 mL	19
FG5640-1000	1000 mL	± 0.3 mL	22
FG5640-2000	2000 mL	± 0.5 mL	27

 

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)

10 Layer BioFactory™ Culture Chambers with Tube 

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 BioFactory™

• Temperature Range: Approx. -86° to +64°C
• Sterilized by E-Beam SAL=10-6
• Nonpyrogenic
• Double-layer sterile bag
• TC treated, good for cell attachment and growth
• Clear lot number for batch traceability
• Ultrasonic welding without extrinsic ingredients. Excellent welding line design can avoid producing particles during welding. And make the BioFactory™ stronger.
• Vent caps with 0.22um hydrophobic filters for gas exchange without contamination.
• Wide mouth is applicable to pour culture medium directly. Narrow mouth is applicable to operate with the aseptic pipeline.
• Growth kinetics are the same as cells grow in the cell culture flasks. Applicable to large-scale culture adherent cells.
• Large growing area. Just a single operate, you can cultivate a large number of cells and reduce contamination risk.
• Applicable to automatic machine. Standardize operations to reduce batch differences.

Nest BioFactory™ Systems are compact, multi-layer, single-use cell culture systems designed for easy scale-up cell culture applications, such as production of vaccines, monoclonal antibodies, or pharmaceuticals. Versatile, easy-to-use systems for small scale research or commercial production with reduced contamination risk. Narrow mouth caps available for tubing solutions.

BioFactory™ Layer choices

• 1 Layer
• 2 Layers
• 5 Layers
• 10 Layers
• 40 Layers

Material

USP Class VI grade polystyrene material

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