Erlenmeyer Conical Flask 250ml
Guide Medlab 250ml Erlenmeyer flask (plain neck) is made of 3.3 borosilicate glass. It features a plain open neck and stable flat base for mixing, heating, titration and microbial culture. Solid thermal and chemical resistance permits repeated autoclaving for daily lab work.
Description
Erlenmeyer Conical Flask 250ml
Guide Medlab 250ml plain‑neck Erlenmeyer flask is practical lab glassware made of high‑grade 3.3 borosilicate glass. Built with tapered cone body and stable flat base, it fits medium‑volume mixing, sample preparation, heating and shake incubation. It resists heat and chemicals and tolerates repeated autoclaving for chemical labs, microbiology testing, pharmaceutical QC and university teaching.
Jiangsu Guide Medlab manufactures Erlenmeyer flasks in multiple sizes, complying with ISO standards. Custom options include printed LOGO, special colors and tailored packaging; we also supply versions with or without stoppers, frosted‑neck or plain‑neck styles. These narrow‑mouth glass flasks are made from 3.3 borosilicate glass following HG/T 3115 specifications, and packed in corrugated export cartons that meet GB/T 6543.
Product Specification
| Product name | 250ml Erlenmeyer Conical Flask |
| Material | 3.3 Borosilicate Glass |
| Capacity | 250ml |
| Neck type | Plain neck |
| Graduation | Printed volume marking |
| Autoclavable | Yes |
Application
Guide Medlab 250ml plain‑neck Erlenmeyer flasks are general‑purpose lab containers made of 3.3 borosilicate glass, widely used in chemical labs, microbiology labs, pharmaceutical testing and university teaching experiments.
• Acid‑base titration, redox titration and volumetric analysis tasks
• Dissolving, diluting and mixing various laboratory reagents
• Microbial incubation and shake flask culture operations
• Sample pretreatment, temporary storage and routine laboratory testing
Quality Control
Packing, Storage and Transportation
●Package
250ml glass Erlenmeyer flasks are packed in corrugated cartons complying with GB/T 6543. Outer packaging follows GB/T 191 requirements. Cartons are clearly marked with product name, specification, quantity, net weight, gross weight and volume.
●Storage
Keep packaged Erlenmeyer flasks stored indoors. Do not stack more than 10 layers. Keep away from strong acids, strong alkalis, chlorides and other corrosive chemicals.
●Transportation
Multiple transport modes are available. Do not drop the goods during loading and unloading.
| Capacity | 10ml | 25ml | 50ml | 100ml | 150ml | 200ml | 250ml |
|---|---|---|---|---|---|---|---|
|
Qty per carton |
400pcs | 400pcs | 192pcs | 192pcs | 192pcs | 72pcs | 72pcs |
| Capacity | 300ml | 500ml | 1000ml | 2000ml | 3000ml | 5000ml | |
| Qty per carton | 60pcs | 48pcs | 24pcs | 12pcs | 8pcs | 4pcs |
FAQ
Q1: Do you offer free samples?
Yes, we can supply free samples (normally 5‑10pcs) for your assessment. Shipping cost is on buyer's side, or freight can be discussed case‑by‑case.
Q2: What is minimum order quantity (MOQ)?
MOQ varies for different items. MOQ is 5 cartons for glass flasks, 1 carton for plastic labware, and 5 cartons for other disposable glass goods. Pallet packing is highly recommended to avoid glass breakage.
Q3: What payment methods do you accept?
We accept T/T (bank transfer) and Alibaba Trade Assurance.
Q4: Can I add my own design or logo to the product?
Yes, OEM / ODM services are available.
Q5: Can you provide CE and ISO for your products?
Yes, we can provide full technical documentation including CE, ISO and COA. FDA documents are available for certain products.
Q6: How about the packing for glass flasks?
Items are packed in export‑qualified corrugated cartons. Pallet loading is strongly advised to reduce breakage risk for long‑distance sea shipments.
Q7: What is your lead time?
Normally 15‑25 working days after we receive your deposit. Exact lead time depends on your order quantity.
Q8: What is the difference between straight‑neck and narrow ground‑neck Erlenmeyer flask?
Straight‑neck flasks fit rubber or silicone stoppers and have no ground joints. They are more cost‑efficient for regular mixing, heating and culturing work.
Q9: Can this glass Erlenmeyer flask be heated directly over open flame?
We suggest using asbestos gauze during heating for even heat distribution, to avoid local overheating and glass cracks.
Q10: What should I do if receiving broken goods?
Please take photos of outer cartons and broken parts within 7 days of goods arrival. We will check and arrange compensation accordingly.
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