SIBATA

SIBATA Borosilicate Erlenmeyer Flask - 10530 Series | Heavy-Duty Rim Design

$64.00

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Volume 100 mL — Pack of 10 300 mL — Pack of 10 500 mL — Pack of 10 1000 mL — Pack of 10 2000 mL — 1 Each

Quantity

Swirling a flask during a titration or shaking a culture overnight puts real stress on glassware. Thin rims chip. Cheap graduations wash off. Flasks that flex even slightly under heat create hot spots that crack at the worst moment. The SIBATA 10530 Series Erlenmeyer Flask is built from German-manufactured borosilicate glass with a low coefficient of thermal expansion — the same specification demanded by research labs that cannot afford a failed vessel mid-experiment. Heavy-duty rims resist chipping during routine handling and stopper insertion, while the conical geometry lets you swirl aggressively without splashing. White-fired graduations and a large marking square are permanent features of the glass itself, not labels that peel during autoclaving or solvent exposure.

Features and Benefits

German-manufactured borosilicate glass with low thermal expansion: Each flask is produced in Germany from Type 1 borosilicate tubing with a coefficient of thermal expansion of 3.3 × 10⁻⁶/K — the same material standard used in premium research-grade glassware. This means the flask withstands rapid temperature changes, including transfer from autoclave to benchtop, without cracking.
Heavy-duty rims engineered to resist chipping: The reinforced rim is the most vulnerable point on any Erlenmeyer flask — it takes the impact of stoppers, clamps, and bench contact thousands of times over a flask's working life. The 10530 Series uses a heavy-duty rim profile that distributes impact stress and significantly reduces chipping compared to standard-rim flasks.
Autoclavable across the full size range: All five sizes withstand standard autoclave conditions at 121°C (250°F), 15 psi, for 20-minute cycles — making this series suitable for media preparation, buffer sterilization, and any workflow where the flask itself must be sterile before use.
Permanent white-fired graduations and large marking square: Graduation marks are fired into the glass surface at high temperature — they cannot be washed off by autoclaving, organic solvents, or aggressive cleaning agents. The large marking square gives you a dedicated, clearly visible area for writing with lab markers.
±5% graduation accuracy for reliable volume measurement: Graduation accuracy is ±5% of full capacity across all sizes — consistent with ASTM E438 Type I borosilicate glass standards for general-purpose lab glassware. Sufficient for media preparation, buffer mixing, and most routine liquid handling tasks.
Uniform wall thickness for safe direct heating: Consistent wall thickness throughout the flask body ensures even heat distribution when placed on a hot plate or over a Bunsen burner. Uneven walls create thermal gradients that concentrate stress and cause cracking — a common failure point in lower-grade glassware.

Specifications

Property	Value
SKU Series	10530 Series (10530-100A, 10530-300A, 10530-500A, 10530-1000A, 10530-2000)
Brand	SIBATA
Style	Narrow-Mouth Erlenmeyer Flask
Material	Borosilicate Glass (Type 1)
Color	Clear
Country of Origin	Germany
Autoclavable	Yes
Graduation Accuracy	±5% of full capacity
Graduation Type	White-fired, permanent
Rim Type	Heavy-duty (chip-resistant)
100 mL	Grad interval: 10 mL \| Range: 40–100 mL \| Dims: 64 × 105 mm \| Stopper No. 2 \| Pack of 10
300 mL	Grad interval: 25 mL \| Range: 100–300 mL \| Dims: 87 × 156 mm \| Stopper No. 6 \| Pack of 10
500 mL	Grad interval: 50 mL \| Range: 200–500 mL \| Dims: 105 × 180 mm \| Stopper No. 6 \| Pack of 10
1000 mL	Grad interval: 50 mL \| Range: 400–1000 mL \| Dims: 131 × 229 mm \| Stopper No. 8 \| Pack of 10
2000 mL	Grad interval: 200 mL \| Range: 800–2000 mL \| Dims: 166 × 280 mm \| Stopper No. 10 \| 1 Each
HTS Code	7017.20.0000
UNSPSC Code	41121803
Warranty	1 Year

Laboratory Applications

Microbiological media and agar preparation: The 500mL and 1000mL sizes are the standard choice for preparing LB broth, agar, PBS, and other sterile media. The autoclavable construction means you can prepare, sterilize, and pour directly from the same vessel — reducing transfer steps and contamination risk.
Titration and analytical chemistry: The conical geometry of the Erlenmeyer concentrates liquid at the bottom during swirling, making end-point color changes easier to detect. The 100mL and 300mL sizes are the standard choice for acid-base and redox titrations in chemistry and QC labs.
Cell culture and shaker flask applications: The 500mL and 1000mL sizes are widely used as shaker flasks for bacterial and yeast culture in incubated orbital shakers. The heavy-duty rim withstands repeated foil capping and the borosilicate construction resists the cleaning cycles required between culture runs.
Solvent and reagent storage: Fitted with a compatible rubber or glass stopper (stopper numbers listed per size in specifications above), these flasks double as short-term reagent storage vessels. The chemical resistance of borosilicate glass makes them suitable for aqueous solutions, dilute acids and bases, and most common organic solvents.
Large-scale buffer preparation: The 2000mL size fills the gap between bench-scale Erlenmeyer flasks and carboys for labs that need to prepare large volumes of buffer, saline, or wash solution in a single autoclave-safe vessel without transferring to a separate storage container.

Frequently Asked Questions

What stopper size fits each flask?
Stopper compatibility by size: 100mL uses Stopper No. 2, 300mL and 500mL use Stopper No. 6, 1000mL uses Stopper No. 8, and 2000mL uses Stopper No. 10. These are standard rubber stopper sizes widely available from laboratory suppliers. Foam or cotton plugs of matching diameter also work for shaker flask applications.

How many flasks come in each pack?
The 100mL, 300mL, 500mL, and 1000mL sizes come in packs of 10. The 2000mL size is sold individually (1 each). All pricing shown reflects the per-pack or per-unit price as specified in the dropdown.

Can I use these flasks on a magnetic stir plate?
Yes. The flat base of the Erlenmeyer geometry sits stably on standard ceramic-top magnetic stir plates. Use an appropriately sized stir bar — for the 100mL flask a 15–25mm bar works well; for the 1000mL and 2000mL sizes, a 40–50mm bar is recommended for effective mixing at volume.

Are these flasks suitable for heating on a hot plate or open flame?
Yes. Uniform wall thickness and low thermal expansion coefficient make all 10530 Series sizes suitable for direct hot-plate heating. For open-flame heating, use a wire gauze support to distribute heat. Avoid placing a cold flask directly onto a pre-heated surface — allow the flask to warm gradually to prevent thermal shock.

How do SIBATA Erlenmeyer flasks compare to Pyrex or Kimax?
SIBATA 10530 Series flasks are manufactured in Germany from the same Type 1 borosilicate glass specification (ASTM E438 Class A) used in Corning Pyrex and Kimble Kimax. The key differentiators are the heavy-duty rim profile — which provides additional chip resistance not always present in standard flanged-rim designs — and the 1-year manufacturer warranty backed by SIBATA's ISO 9001-certified production.

Quality Assurance

SIBATA Scientific Technology has manufactured precision laboratory glassware since 1932. The 10530 Series Erlenmeyer Flasks are produced in Germany under ISO 9001-certified quality management from borosilicate tubing meeting ASTM E438 Type I, Class A material standards. Each production batch is inspected for dimensional conformance, graduation accuracy, and rim integrity before shipment. Every flask carries a 1-year manufacturer warranty.